Mohammad Almasi kashi

University of Kashan · Department of Physics

A simple hydrothermal method was used in order to grow ZnO nanorods on ZnO/Ag double seed layer. With annealing of the ZnO/Ag seed layer at different temperatures in the range of 150–450 °C, the effect of Ag embedded layer on the properties of ZnO nanorods was investigated. The ZnO/Ag seed layers and ZnO heterostructure nanorods were characterized...

FeCo binary alloys with high saturation magnetization have been envisioned as the most promising compounds in the fabrication of solid-state devices, including hard drives. Forming multilayered nanowires (MNWs) of these alloys would allow for ultra-high density data storage by reversing spins in the 3D space. However, thorough experimental investig...

In the present work, ZnO nanorods were synthesized on ZnO seed layer by a hydrothermal method and then etched in zinc nitrate solution, including ZnO nanopowder. To optimize the effective factors of etching solution such as zinc nitrate concentration, ZnO nanopowder concentration, and solution temperature, Taguchi experimental design with orthogona...

FeCo/Cu multilayer NW arrays are fabricated using a pulsed electrodeposition method in 50 nm pore diameter anodic aluminum oxide templates. The magnetic layer (LFeCo) and nonmagnetic layer (LCu) thicknesses range between 23–225 and 2–50 nm, respectively. These layer designations make it possible to find a thin Cu layer, in which the magnetic behavi...

In this study, we synthesize highly crystalline cobalt NWs in the form of powder and ordered nanomagnets using a solvothermal technique. We study morphological, structural, and magnetic properties of the resulting NWs using field-emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, and first-or...

Realizing promising materials for use in next-generation devices at the nanoscale is of enormous importance from both fundamental and applied perspectives. Nonmagnetic and magnetic metal nanowire (NW) arrays fabricated by template-based electrodeposition techniques have long been considered as good candidates for this purpose. In this review, we fo...

Angular-dependent measurements of magnetic properties could point the way for understating reversal modes of anisotropic nanoobjects for use in next generation of more powerful and permanent information storage devices. However, such measurements have been significantly less considered for chemically synthesized nanowires. Here, single crystalline...

Three EM wave absorbing (FeNi, CoNi, and FeCo)/ZnS nanocomposites were synthesized by simple and successful process. By comparison, it was demonstrated that the maximum attenuation constant as well as magnetic loss parameter corresponds to the prepared FeNi/ZnS nanocomposite. It resulted in an optimum reflection loss of − 26.5 dB at about 12.2 GHz...

Nanomaterials are attracting increasing interest in many biomedical fields, including the fight against cancer. In this context, we successfully synthesized CoNi alloy nanoparticles (NPs) by a simple polyol process. The magnetic characteristics of the products were measured by vibration sample magnometry, which revealed that the samples have soft f...

The polyol method has been used to synthesize CoNiFe and CoNiZn alloy nanoparti-cles (NPs). The magnetic characteristics of the products have been measured by vibration sample magnetometry (VSM) analysis. At the same time, the microstructure and morphology were inspected by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectivel...

A combinatory two-step anodization technique is presented to prepare self-ordered porous anodic alumina (PAO) templates. The first and second anodization steps are performed in oxalic and selenic acid at 40 V and 45 V, respectively, giving rise to 13-nm-diameter PAOs with high ordering and porosity of 1.4%. The anodization time for the second step...

Novel synthetic methods and materials tuned for high-efficiency absorbers are increasingly being used for shielding environments from microwaves with frequencies of gigahertz range emitted from cell phones and radar systems. Here, an in situ precipitation route in the synthesis of nanocomposites consisting of magnetic alloy FeNi and semiconductor Z...

This study aims to overcome a major challenge that is reaching high pore-filling percentage (FP) in the fabrication of high aspect ratio (HAR) nanowires (NWs) grown electrochemically in large diameter porous templates. By ultrathinning the barrier layer of hard anodized anodic aluminum oxide (AAO) templates with large pore diameters (Dp) of 110 and...

Zinc oxide nanorods (NRs) were successfully synthesized on the seeded substrate by low-temperature hydrothermal method. The effect of adding ZnO nanoparticles (NPs) to hydrothermal bath on the structural, morphological, and electrical properties of the resulting NRs was systematically investigated. The NRs diameter and length decrease with increasi...

Abstract The emergence of novel effects such as giant magnetoresistance and magnetothermopower in single nanowires (NWs) and multilayered NWs (MNWs) makes it necessary to comprehensively understand and distinguish between their magnetic behavior and subtle characteristics. Herein, experimental fine-tuning of both ferromagnetic and non-magnetic segm...

While Co ferrite nanoparticles (NPs) have been widely considered for potential applications in magnetic storage, photocatalysts, and hyperthermia, significantly less attention has been paid to explore their detailed magnetic characteristics as a function of the Co content. Herein, a hydrothermal method was successfully used for the preparation of C...

Ternary Co–Ni–Sn nanoparticles were prepared using a chemical polyol method, and their magnetic and structural properties were investigated by a vibrating sample magnetometer (VSM), first-order reversal curve (FORC), X-ray diffraction and scanning electron microscopy (SEM). It was found that, by increasing the amount of Sn, the magnetization of the...

Three-dimensional ZnO nanorods (NRs) were synthesized by hydrothermal method on ZnO seed layer including horizontal ZnO NRs. The ZnO seed layers consist of different values of NRs were synthesized by spin-coating. The different seed layers and ZnO nanorods arrays were characterized using field emission scanning electron microscopy, X-ray diffractio...

Bulk samples of Co1−xNixFe2O4 (x = 0.0, 0.2, 0.4, 0.6, 0.8 1.0) were shaped by a spark plasma sintering (SPS) process. The initial ferrite nano-powders which were prepared using a co-precipitation method were characterized by high-resolution transmission electron microscopy (HRTEM) and Mössbauer spectroscopy. The HRTEM showed nanoparticles with alm...

In this work, a (ZnO)/(Cu-doped ZnO) core/shell nanorods array was fabricated by a two-step method: ZnO hydrothermal synthesis followed by encapsulation via a dip-coating process. The effects of the Cu dopant concentration on the structural, electrical and optical properties of the nanorods were studied. The SEM images showed that the encapsulation...

While studying domain wall (DW) propagation in magnetic nanowires (NWs) may pave the way for future research and technological applications in recording heads and novel sensors, no attention has been paid to the investigation of magnetic reversal modes in multilayered NWs using angular first-order reversal curve (AFORC) analysis. Here, the magnetiz...

In this study, the essential microwave properties of the synthesized ternary alloy Co-Ni-M (M = Sn, Zn, Cu)/PANI nanocomposites were investigated, in terms of the complex permittivity and permeability, dielectric and magnetic loss factors, impedance matching ratio, and the attenuation constant. Compared to the synthesized binary alloy Co-Ni/PANI na...

Ordered arrays of NiFe/Cu multisegmented nanowires (NWs) are fabricated by ac pulse electrodeposition method into the 25-lm thick anodic aluminum oxide templates with a pore diameter of about 40–100 nm inter-pore distance. The behavior of magnetostatic interactions between neighboring NiFe/Cu NWs as well between magnetic segments of the same wire r...

CoNi binary alloy nanoparticles were prepared by using a polyol method. The effect of the Cu additive (acting as the third element) on structural and magnetic properties of the CoNi50−xCux (10 ≤ x ≤ 40) alloy was then studied by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), magnetometry and first-order reversal curve...

Transparent conducting electrodes (TCEs) have attracted increasing attention for numerous applications including flexible solar cells, liquid crystal displays, LEDs and wearable electronics. Metallic nanowires (MNWs) based TCEs offer competitive optical and electrical properties and flexibility required for most trending optoelectronic devices. In...

The concluding study presents first-order reversal curve diagrams of the full-Heusler alloy nanoparticles.

Metallic nanowire (MNW) films are receiving increasing attention as new transparent conductive electrodes (TCE) poised to replace indium tine oxide (ITO) materials. Here, we present a novel TCE based on AgNi fabricated with electrodeposition of metal ions into nanopores of anodic aluminum oxide templates.

Metal nanowires (MNWs) have gained considerable attention from research groups as they can be effectively applied in new transparent conductive electrodes (TCEs), replacing indium tin oxide (ITO) materials. However, using conventional synthetic methods including the chemical solution, Ag and Cu NW-based TCEs have been found to be non-uniform and un...

ffffy4t

ZnO nanorods (NRs) were successfully synthesized on seed layered substrate by a rotational hydrothermal method. The critical role of initial rest time of rotating substrate on the growth and UV photodetecting properties of ZnO NRs was systematically investigated. Moreover, the crystal structure and morphology of as-grown ZnO NRs were characterized...

Fabrication of different nanostructures based on template-assisted methods has become conventional, due to their numerous potential applications. In this paper, Fe nanowire arrays (NWAs) were fabricated using a pulsed electrodeposition in porous anodic alumina (PAA) templates. The effect of alumina barrier layer conditions such as barrier layer tem...

Magnetic nanowires electrodeposited into solid templates are of high interest due to their tunable properties which are required for magnetic recording media and spintronic devices. Here, highly ordered arrays of FeCoNi NWs with varied diameters (between 60 and 150 nm) were fabricated into nanopores of hard-anodized aluminum oxide templates using p...

ZnO nanorods (NRs) were successfully synthesized on seed layered substrate by a novel rotational hydrothermal method. The effect of substrate rotational speed on the growth of ZnO NRs were systematically characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM). With an increase of the rotational speed, the me...

One-pot polyol processing was successfully used for the preparation of FexNi100−x nanoparticles. By increasing Ni concentration in FexNi100−x alloy, the phase transition from bcc to fcc crystalline structure was clearly indicated by the XRD data as well as the measured hysteresis loops. FORC diagrams demonstrated that the prepared samples consist o...

In this study, we fabricated ZnO nanorods grown on Fe-doped ZnO seed layer by a hydrothermal method. The effects of seed layer on growth of ZnO nanorods and their electrical and photodetection properties were systematically investigated. Results indicate that the average diameter of ZnO nanorods decreases with increasing Fe concentration while the...

Regardless of the synthetic method, developing high magnetic coercivity in ferromagnetic nanowires (NWs) with large diameters has been a challenge over the past two decades. Here, we report on the synthesis of highly coercive cobalt NW arrays with diameters of 65 and 80 nm, which are embedded in porous anodic alumina templates with high-aspect-rati...

Magnetic nanowires (NWs) electrodeposited into solid templates are of high interest due to their tunable properties which are required for magnetic recording media and spintronic devices. Here, we have paid particular attention to the angular dependence of magnetic properties on the applied magnetic field orientation. Highly ordered Fe 50 Co 49 Ni...

Many potential applications have been proposed for free standing nanowires, including magnetic and metallic nanowires: highly sensitive biosensors, cell separation and manipulation, supercapacitors, nanoscale interconnects, light-emitting diodes and touch sensors, photoelectrochemical performance, dye-sensitized solar Cells and etc. We electrochemi...

The nanopore arrays are fabricated by the two-step self-organized anodization of aluminium in 0.3 M oxalic acid at 40 V and 17 ◦C. The prepared membranes were used as templates for fabrication of densed arrays of Ni nanowires by a pulsed electrodeposition method. The two current densities (Jed) of 50 and 100 mA/cm2 are investigated, while the other...

Providing practical implications for developing the design and optimizing the performance of hard magnets based on nanowires (NWs) requires an in-depth understanding of the processes in fabrication and magnetic parameters. Here, an electrochemical deposition technique with different frequencies is used to fabricate 50 nm diameter Co NW arrays into...

Half-Heusler nanostructures of Co2FeAl alloys, synthesized via coprecipitation route, were found to contain both hard- and soft-phases magnetic grains, mapped using first-order reversal curves (FORCs) diagrams. The obtained results confirmed that these powders are highly interacting as a single-domain magnetizing system. A significant dependence of...

Magnetic nanowires (NWs) electrodeposited into solid templates are of high interest due to their tunable properties which are required for magnetic recording media and spintronic devices. Here, we have paid particular attention to the angular dependence of magnetic properties on the applied magnetic field orientation. Highly ordered Fe 50 Co 49 Ni...

While a variety of template-based strategies have been developed in the fabrication of nanowires (NWs), a uniform pore filling across the template still poses a major challenge. Here, we present a large area controlled pore filling strategy in the reproducible fabrication of various magnetic and metallic NW arrays, embedded inside anodic aluminum o...

As a dielectric interface, the alumina barrier layer has so far been shown to influence the electrochemical deposition mechanism of different types of ions inside nanopores of anodic alumina templates. Here, the roles of temperature (Tb) and thickness of the barrier layer in the electrodeposition efficiency (EE) of nickel inside 45 nm pore diameter...

This research focuses on the synthesis and characterization of the attractive magnetic alloys, full-Heusler Co2FeAl nanoparticles. A modified co-precipitation method has been developed in a template of chitosan biopolymer. XRD pattern of the product confirmed the high crystalline quality of the L21‒ordered nanoparticles, refined by Rietveld analysi...

Arrays of multilayered Ni/Cu nanowires (NWs) with variable segment sizes were fabricated into anodic aluminum oxide templates using a pulsed electrodeposition method in a single bath for designated potential pulse times. Increasing the pulse time between 0.125 and 2 s in the electrodeposition of Ni enabled the formation of segments with thicknesses...

Magnetic hollow nanoparticles (HNPs) are of particular interest owing to their broad applications including targeted drug delivery and magnetic resonance imaging. Here, hollow Co2FeAl full-Heusler NPs were successfully synthesized using the polyethylene glycol polymer as a capping agent, followed by thermal annealing at 700 °C with heating rates ra...

Magnetic alloy nanowires (NWs) have long been studied owing to both their fundamental aspects and possible applications in magnetic storage media and magnetoresistance devices. Here, highly ordered arrays of FeCoNi NWs (175 nm in diameter and lengths ranging from 3 to 27 μm) were fabricated into nanopores of hard-anodized aluminum oxide templates u...

Magnetic alloy nanowires (NWs) have long been studied owing to both their fundamental aspects and possible applications in magnetic storage media and magnetoresistance devices. Here, highly ordered arrays of FeCoNi NWs (175 nm in diameter and lengths ranging from 3 to 27 μm) were fabricated into nanopores of hard-anodized aluminum oxide templates u...

Magnetic nanowires (NWs) electrodeposited into solid templates are of high interest due to their tunable properties which are required for magnetic recording media and spintronic devices. Here, we have paid particular attention to the angular dependence of magnetic properties on the applied magnetic field orientation. Highly ordered Fe 50 Co 49 Ni...

A systematic study of the size effect on the structural and magnetic properties of Co2FeAl ternary alloys with different particle sizes has been performed in this work. The average particle size was controlled in a range from a few nanometers to micrometers by tuning the annealing rate. Upon annealing process at 700 °C in the presence of the surfac...

A new approach to tuning the crystalline characteristics and magnetic properties of cobalt nanowire (NW) arrays embedded in AAO templates is reported using zinc additive. This is realized by adding low concentrations of Zn when pulse-electrodepositing cobalt NWs while also increasing the solution pH from 3 to 5. Using hysteresis loop measurements w...

A method for accelerating first order reversal curve (FORC) distribution measurement of a sample is disclosed. The method includes steps of obtaining a sample; setting an interpolation direction; setting an applied field step and a reversal field step based on the interpolation direction; obtaining a set of FORCs with the applied field step and the...

In this study, we aim to report the role of Cu additive in arrays of pulse-electrodeposited Co nanowires (NWs) with diameters from 30 to 75 nm, embedded in porous aluminum oxide templates. This features the role of Cu additive in composition and crystalline characteristics as well as in the magnetic properties of Co NWs. Increasing the duration of...

The effect of interactions on the soft and hard phases and interference region that commonly appears in the First Order Reversal Curve (FORC) of interacting two-phase magnetic systems was investigated. To obtain an interacting two-phase system, a new method was introduced for the first time to electrodeposit a two-phase magnetic nanowire (NW) compo...

Investigation of new parameters affecting the electrodeposition process of nanowires (NWs) grown in solid templates is of considerable significance. In this work, the electrodeposition efficiency (EE) of Ni in the fabrication of arrays of pulsed ac electrodeposited NWs embedded in porous aluminum oxide template was investigated. By filling the bran...

Self-ordered Co nanowire arrays with different diameters of 30, 70 and 75 nm were grown into the anodized aluminum oxide templates by variation of deposition current between 5 and 55 mA. Increasing diameter of the nanowires enhances interaction between the nanowires, thereby decreasing the coercivity. However, increasing the deposition current decr...

Nanoparticles of Co2FeAl magnetic alloy was successfully fabricated in the presence of a well-known capping agent, polyvinyl alcohol, as a polymer template. The magnetic properties were studied using hysteresis curve and first-order reversal curve (FORC) measurements at room temperature. FORC diagrams demonstrated a wide distribution of the coerciv...

Magnetic alloy nanowires (ANWs) have long been studied owing to both their fundamental aspects and possible applications in magnetic storage media and magnetoresistance devices. Here, we report on the roles of thermal annealing and duration of off-time between pulses (toff ) in crystalline characteristics and magnetic properties of arrays of pulsed...

Magnetic nanowires (NWs) electrodeposited into solid templates are of high interest due to their tunable properties which are required for magnetic recording media and spintronic devices. Here, highly ordered arrays of FeNi NWs with varied lengths (ranging from 2.5 to 12μm) and diameters (between 45 and 75 nm) were fabricated into anodic aluminum o...

Ordered Co nanowire arrays with a constant geometry (~ 40 nm diameter, ~ 10 µm length and ~100 nm interwire distance) were ac pulse electrodeposited into anodic aluminum oxide template under different deposition current densities (5.31, 7.08 and 8.85 mA/cm2). Microstructure and magnetic properties of the samples were studied using X-ray diffraction...

FeCoNi nanowire arrays (175 nm in diameter and lengths ranging from 5 to 40 μm) were fabricated into nanopores of hard-anodized aluminum oxide templates using pulsed ac electrodeposition technique. Increasing the length had no considerable effect on the composition and crystalline characteristics of Fe47Co38Ni15 nanowires (NWs). By eliminating the...

A Co75Cr13Pt12 intermediate magnetic layer was deposited between the (CoCrPt) 97. 5Nb2. 5 upper magnetic layer and chromium underlayer by the magnetron sputtering technique. The effect of the thickness ratio of two magnetic layers and post-annealing treatment on the microstructure and magnetic properties of the films were investigated. The magnetic...

Fe49Co33Ni18 nanowire arrays (175 nm in diameter and lengths ranging from 5 to 32 μm) were fabricated into nanopores of hard-anodized aluminum oxide templates using pulsed ac electrodeposition technique. Hysteresis loop measurements indicated that increasing the length decreases coercivity and squareness values (from 274 Oe and 0.58 to 200 Oe and 0...

In this work, CoFe/Cu multilayer nanowires were deposited into an anodic aluminum oxide template using the single-bath method. The effect of deposition parameters as off-time between pulses and reduction/oxidation voltage of both the magnetic CoFe and non-magnetic Cu layers on the magnetic behavior of the multilayer nanowires was investigated. The...

Varying the off-time between pulses in electrolyte with different compositions, NixZn1−x (0.73 ⩽ x ⩽ 0.91) nanowire arrays were ac pulse electrodeposited into the porous alumina templates prepared by common two-step anodization technique. The effect of post annealing also was investigated. The influence of deposition parameters on alloy contents wa...

The magnetic behavior of as-deposited and annealed CoxZn1−x (x=0, 22, 50, 64 and 75) array nanowires were studied by first-order reversal curve (FORC) method. It was found that with increase in Zn content, the magnetostatic interaction and coercivity distribution, average coercivity, saturation magnetization and squareness shifted to the lower valu...

The angular dependence of coercivity and squareness of Fe0.49Co0.41Ni0.10 nanowire arrays with various lengths have been comparatively studied. Investigation results demonstrate that the easy axis is along the wire axis for Fe0.49Co0.41Ni0.10 nanowire arrays with lengths ranging from 19 to 41 m due to their large shape anisotropy. A non-monotonic...

FeCoNi nanowire arrays with 100 nm diameter were prepared by ac-pulse electrodeposition into the nanopores of hard anodized aluminum oxide templates. The effect of nanowires length on the magnetostatic interactions was investigated using first order reversal curve method. The Fe0.49Co0.41Ni0.10 nanowires with wires length ranging from 19 to 41 m s...

The angular dependence of coercivity and squareness of Fe 0.49 Co 0.41 Ni 0.10 nanowire arrays with various lengths have been comparatively studied. Investigation results demonstrate that the easy axis is along the wire axis for Fe 0.49 Co 0.41 Ni 0.10 nanowire arrays with lengths ranging from 19 to 41 m due to their large shape anisotropy. A non-...

FeCoNi nanowire arrays with 100 nm diameter were prepared by ac-pulse electrodeposition into the nanopores of hard anodized aluminum oxide templates. The effect of nanowires length on the magnetostatic interactions was investigated using first order reversal curve method. The Fe 0.49 Co 0.41 Ni 0.10 nanowires with wires length ranging from 19 to 41...

CoxSn1−x alloy nanowires were ac-pulse electrodeposited into the highly ordered alumina template in the same electrolyte concentration. The effect of off-time between pulses (0, 20, 50, 100 and 200 ms) on the magnetic properties and microstructure of the CoxSn1−x nanowires was investigated. Using a single electrodeposition bath, Sn content increase...

Ordered Co-Ni nanowires with 30 nm diameters were prepared using ac pulse electrodeposition. The magnetic properties and microstructure of Co-Ni nanowires were investigated. The crystalization of Co-Ni nanowires was found that depends on the deposition current. At lower deposition current the anomalous phenomenon deposition of cobalt was seen to be...

CoFe and CoFeCu self-organized alloy nanowires were grown into anodic aluminum oxide template by potentiostatic mode of ac-pulse electrodeposition technique and subsequently annealed at 580 °C. The influence of bath composition, off-time between pulses and annealing treatment on the Cu content, microstructure and magnetic properties of CoFeCu nanow...

Encapsulated ZnO nanorod arrays were fabricated using a two-step method; hydrothermal followed by dip-coating. Intensity of X-ray diffraction peaks of ZnO nanorod films increased by encapsulation with ZnO and Fe doped ZnO layer. Encapsulation process increased diameter of the rods in a range of 20-40 nm. The optical studies indicated that the band-...

This work focused on the development of a new single bath technique to fabricate compositionally modulated Co/Cu, CoFe/Cu and Fe/Cu multilayer nanowires in nanoporous alumina templates prepared by the hard and mild anodization methods. The approach was based on ac pulse electrodeposition, employing successive cycles of alternating continuous and pu...

The effect of deposition current on the magnetic behavior of cobalt (Co) nanowire arrays (NWs) grown by electrodeposition in anodized aluminum oxide (AAO) templates were studied by the First-Order-Reversal-Curve (FORC) technique at room temperature. It was found that increasing the deposition current up to 20 mA remarkably reduced the coercivity an...

Fe/Cu multilayer nanowires were ac-pulse electrodeposited into the anodic aluminum oxide templates prepared by a two-step mild anodization technique. Transmission electron microscopy images showed the distinct layers with a relatively high contrast. A highly pure layer (∼99%) was achieved by tuning the proper ions ratio and optimizing the off-time...

Whilst Co nanorods with high coercivity were synthesized during recent years, they did not achieve the same results as for Co nanowires embedded in solid templates. In the present work, Co nanowire arrays (NWAs) with high coercivity were successfully fabricated in porous aluminum oxide template under optimum conditions by using pulsed ac electrodep...

In the present work (CoCrPt)97.3Nb2.7/Cr films were deposited onto Si (100) substrate by DC magnetron sputtering method. The magnetic layer thickness was 12, 24, 36, 48, 60 and 72 nm. While that of the Cr underlayer was kept the same, 65 nm, for all the films. The microstructure investigations by transmission electron microscopy showed a serpentine...

Magnetic FeCoNi alloy nanowires were ac-pulse electrodeposited into the nanopores of hard anodized aluminum oxide templates. The effect of nanowires length on the magnetostatic interactions was investigated using first order reversal curve method. The coercivity and squareness enhanced from 190Oe and 0.11 to 260Oe and 0.55, showing the decrease in...

Alumina templates were fabricated by two-step anodization process and then FeCoZn nanowires have been prepared using pulse electrodeposition in anodized aluminium oxide templates. A misfit between Zn molarity in the electrolyte and Zn weight-percentage was found which attributed to anomalous deposition of Zn atoms into Fe-group alloys. The XRD patt...

Encapsulated ZnO nanorod arrays are synthesized on glass substrate by a two-step route, hydrothermal followed by dip coating. It was found that the encapsulating process increases the rod diameters from ∼20 to ∼40 nm without any significant effects on the microstructure, even with an Fe-doped ZnO encapsulated layer. Optical studies indicated a redu...

(Co75Cr13Pt12)100−x (Al2O3)x (x = 3, 5, 10, and 13 wt.%) thin films were deposited onto the Cr underlayer by an RF magnetron sputtering technique. The effects of annealing treatment on the structure and magnetic properties of the amorphous film with 13 wt.% Al2O3 content were investigated. Increasing of aluminum oxide between 3 and 13 wt.% causes a...

Co nanowire arrays were pulse electrodeposited into nanoporous alumina templates via the dendrite pores of a thinned barrier layer formed by exponentially non-equilibrium anodization, either without or with Cu pre-plating. Electrolyte acidity (pH) dependence of the microstructure and magnetic properties of the prepared Co nanowires was investigated...

FeCo nanowire arrays have been obtained by current pulse electrodeposition into nanoporous alumina templates. First-order reversal curve (FORC) diagrams have been used to investigate magnetostatic interaction and average coercivity of individual FeCo nanowires embedded in porous alumina templates. The FeCo nanowires with a wires length up to 3 μm a...