FABRICATION AND MAGNETIC CHARACTERIZATION OF Au/Ni MULTILAYER NANOWIRE ARRAYS

2006 ◽  
Vol 05 (02n03) ◽  
pp. 183-187 ◽  
Author(s):  
FANG XU ◽  
KAI JIANG ◽  
HAOLING SUN ◽  
SONG GAO ◽  
DONGSHENG XU
Keyword(s):  
Easy Axis ◽  
Deposition Time ◽  
Structural Parameters ◽  
Magnetic Measurement ◽  
Perpendicular Magnetic Anisotropy ◽  
Nanowire Arrays ◽  
Anodic Aluminum ◽  
Measurement Results ◽  
Potential Applications

Ordered Au/Ni multilayer nanowire arrays have been fabricated into the pores of anodic aluminum oxide (AAO) templates by pulse DC electrodeposition. Structural parameters, such as nanowire length and layer thickness can be controlled by changing the deposition time and the pulse width. The magnetic measurement results indicate that these Au/Ni multilayer nanowire arrays have small coercivity and perpendicular magnetic anisotropy, which the easy axis is parallel to the nanowires. These Au/Ni multilayer structures are expected to be found potential applications in AC inductors or magnetic shielding.

Preparation and Characterization of Ordered Pb(Zr0.53Ti0.47)O3 Nanotube Arrays by Sol-Gel Template Method

2009 ◽  
Vol 79-82 ◽  
pp. 361-364
Author(s):  
Shi Shang Guo ◽  
Lin Ai ◽  
Dan Li ◽  
Li Zheng ◽  
Zheng Zhang
Keyword(s):  
Lead Zirconate Titanate ◽  
Sol Gel ◽  
Lead Zirconate ◽  
X Ray Diffraction ◽  
Filling Rate ◽  
Pore Filling ◽  
Anodic Aluminum ◽  
Potential Applications ◽  
Perovskite Crystal

Ferroelectric lead zirconate titanate Pb(Zr0.53Ti0.47)O3 (PZT) nanotubes were prepared using porous anodic aluminum oxide (AAO) template by means of a simple sol-gel method. Scanning electron microscope (SEM) showed that closely packed PZT nanotubes were synthesized with a high pore-filling rate and aspect ratio after annealing at 700 °C. The X-ray diffraction investigations revealed that the annealed PZT nanotubes exhibit a polycrystalline microstructure and were composed of perovskite crystal structure. The results of polarization hysteresis and piezoresponse force microscope (PFM) measurements showed typical piezoelectricity in PZT nanotubes as well as stable electrical properties revealed by leakage current measurement, indicating potential applications using ferroelectric one-dimension nanostructures.

Morphological and Magnetic Properties of Electrodeposited Ni-Ag Alloy Nanowire Arrays in Modified AAO Template

2014 ◽  
Vol 875-877 ◽  
pp. 14-17 ◽  
Author(s):  
Wei Zheng Shang ◽  
Wei Guo Zhang ◽  
Hong Zhi Wang
Keyword(s):  
Electron Microscopy ◽  
Anodic Aluminum Oxide ◽  
Magnetic Hysteresis ◽  
Magnetic Hysteresis Loop ◽  
Atomic Ratio ◽  
Nanowire Arrays ◽  
Aao Template ◽  
Anodic Aluminum ◽  
Transmission Electron ◽  
Potential Applications

Highly ordered Ni-Ag alloy nanowire arrays have been fabricated successfully by electrodeposition into the pores of anodic aluminum oxide (AAO). This template was prepared with modified two-step anodizing method. The scanning and transmission electron microscopy were utilized to characterize the Ni-Ag alloy nanowire arrays. The results revealed that the nanowire arrays were regularly arranged, about 90nm in diameter and 30µm in length. The nanowires were single crystal and the atomic ratio of Ni and Ag is very close to 79:21. Magnetic hysteresis loop showed that Ni-Ag alloy nanowire arrays embedded in AAO have superparamagnetism, indicating their potential applications in biomedical materials.

Soft Magnetic Property of [Fe80Ni20-O/ZnO]n Multilayer Thin Films for High-Frequency Application

2012 ◽  
Vol 476-478 ◽  
pp. 2335-2338 ◽  
Author(s):  
Yuan Wang ◽  
Hao Geng ◽  
Shuang Jun Nie ◽  
Jian Qing Wei ◽  
Lai Sen Wang ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Anisotropy ◽  
Easy Axis ◽  
Magnetic Measurement ◽  
Soft Magnetic Property ◽  
Multilayer Thin Films ◽  
Soft Magnetic ◽  
Uniaxial Magnetic Anisotropy ◽  
Glass Substrates ◽  
Measurement Results

A series of [Fe80Ni20-O/ZnO]nmultilayer thin films with different ZnO separate layer thicknesses (t, from 0 to 3 nm) and fixed Fe80Ni20-O layer thickness (about 5 nm) have been fabricated on (100)-oriented silicon wafers and glass substrates by reactive magnetron sputtering. Microstructure analysis and static magnetic measurement results indicate that the magnetic properties of the films can be adjusted by the variation of ZnO monolayers thickness. All films reveal an evident in-plane uniaxial magnetic anisotropy (IPUMA). The values of in-plane uniaxial magnetic anisotropy fields (Hk) and resistivity (ρ) can be changed from 8 to 57 Oe and 62 to 168 μΩ•cm respectively with the t increasing. While the values of hard axis coercivity (Hch) and easy axis coercivity (Hce) reveal minimums of 1.5 and 3 Oe respectively at t = 1 nm.

scholarly journals Preparation and Characterization of Fe Nanowire Arrays in Porous Anodic Aluminum

2002 ◽  
Vol 18 (10) ◽  
pp. 930-933
Author(s):  
Yao Su-Wei ◽  
◽  
Chi Guang-Jun ◽  
Cui Lan ◽  
Fan Jun ◽  
...  
Keyword(s):  
Nanowire Arrays ◽  
Anodic Aluminum

Synthesis and Characterization of ZnO Thin Film Memristor

2013 ◽  
Vol 701 ◽  
pp. 172-175 ◽  
Author(s):  
Marmeezee Mohd Yusoff ◽  
Mohd Hanafi Ani ◽  
Suryanto
Keyword(s):  
Thin Film ◽  
Deposition Time ◽  
Low Cost ◽  
Electrical Measurement ◽  
Zno Films ◽  
Zno Thin Film ◽  
Thin Film Thickness ◽  
Potential Applications ◽  
Pinched Hysteresis

ZnO films were deposited on Cu substrate using electrodeposition and thermal oxidation method. The effect of deposited thin film thickness varied with deposition time was discussed. Synthesized ZnO films were characterized using XRD, FE-SEM and electrical measurement. The results from electrical measurement showed the deposited ZnO exhibits pinched hysteresis IV curves. The synthesized ZnO shows a potential applications and options in production of a non-complex and low cost memristor.

Preparation, Characterization and Magnetic Properties of Fe59Co41 Alloy Nanowires Using AC Electrochemical Deposition

2010 ◽  
Vol 152-153 ◽  
pp. 963-966
Author(s):  
Xue Hua Wang ◽  
Gui Chen ◽  
Liang Yang ◽  
Cheng Yong Li ◽  
Peng Cai
Keyword(s):  
Magnetic Properties ◽  
Anodic Aluminum Oxide ◽  
Perpendicular Magnetic Anisotropy ◽  
Nanowire Arrays ◽  
Easy Magnetization ◽  
Hexagonal Close Packed ◽  
Anodic Aluminum ◽  
Magnetization Axis ◽  
Alloy Nanowires ◽  
Anodic Aluminum Oxide Templates

Highly ordered Fe59Co41 alloy nanowires with a diameter of about 50 nm and length of about 4.1µm have been fabricated by alternating current (AC) electrodeposition into the anodic aluminum oxide templates. The morphology, structure and magnetic properties of Fe59Co41 alloy nanowires were characterized by TEM, EDS, XRD and VSM, respectively. The results indicate the Fe59Co41 nanowires with a high aspect ratio are very uniform and regular, which corresponds to the diameter of the nanochannel of the AAO membrane. XRD and HRTEM results show that the Fe59Co41 nanowires crystallize in hexagonal-close-packed (HCP) cobalt solid solution with [100] preferred orientation. VSM results show the Fe59Co41 nanowire arrays have a notable perpendicular magnetic anisotropy with easy magnetization axis along the nanowires. The magnetic properties of Fe59Co41 nanowire arrays are mainly predominated by shape anisotropy.

Preparation of Pt/Ni Multilayer Nanowires with Enhanced Magnetic Property and Electrocatalytic Activity

2016 ◽  
Vol 40 ◽  
pp. 20-28 ◽  
Author(s):  
Li Zhong He ◽  
Li Rong Qin ◽  
Jian Wei Zhao ◽  
Yu Yang ◽  
Ying Ying Yin
Keyword(s):  
Electrocatalytic Activity ◽  
Easy Axis ◽  
Anodic Aluminum Oxide Template ◽  
Nanowire Arrays ◽  
Performance Tests ◽  
Anodic Aluminum ◽  
Axis Parallel ◽  
Multilayer Nanowires ◽  
Uniform Diameter ◽  
Pt Nanowires

Pt/Ni multilayer nanowire arrays were successfully fabricated inside the nanochannels of anodic aluminum oxide template by pulse electrodeposition method. The morphologies of the Pt/Ni nanowires were analyzed, which revealed that these nanowires had smooth surface and uniform diameter of about 70 nm. The ferromagnetic Ni layers were separated periodically by Pt layers along the axis of the nanowires. Magnetization measurements on the Pt/Ni nanowire arrays revealed a stronger magnetic anisotropy with the easy axis parallel to the nanowires. Following electrochemical performance tests indicated that the Pt/Ni multilayer nanowires comprising Pt and Ni layers showed enhanced electrocatalytic activity for methanol oxidation, as compared with pure Pt nanowires.

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