Novel gradient-diameter magnetic nanowire arrays with unconventional magnetic anisotropy behaviors

2018 ◽  
Vol 54 (54) ◽  
pp. 7515-7518 ◽  
Author(s):  
Jing Wang ◽  
Zhili Zuo ◽  
Liang Huang ◽  
Muhammad Asif Warsi ◽  
John Q. Xiao ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Nanowire Arrays ◽  
Magnetic Nanowires ◽  
Temperature Dependent ◽  
Magnetic Nanowire

Gradient-diameter magnetic nanowires exhibited tailorable magnetic anisotropy that can be used to switch magnetic nanowires easily and unconventional temperature-dependent coercivity.

Self-Organized Magnetic Nanowire Arrays Based on Alumina and Titania Templates

2007 ◽  
Vol 7 (1) ◽  
pp. 272-285 ◽  
Author(s):  
V. M. Prida ◽  
K. R. Pirota ◽  
D. Navas ◽  
A. Asenjo ◽  
M. Hernández-Vélez ◽  
...  
Keyword(s):  
Lattice Parameter ◽  
Magnetic Behaviour ◽  
Nanowire Arrays ◽  
Magnetic Storage ◽  
Magnetic Nanowires ◽  
Self Assembling ◽  
Aspect Ratios ◽  
Magnetic Nanowire ◽  
Ordering Degree ◽  
Ultrahigh Density

Densely packed arrays of magnetic nanowires have been synthesized by electrodeposition filling of nanopores in alumina and titania membranes formed by self-assembling during anodization process. Emphasis is made on the control of the production parameters leading to ordering degree and lattice parameter of the array as well as nanowires diameter and length. Structural, morphological and magnetic properties exhibited by nanowire arrays have been studied for several nanowire compositions, different ordering degree and for different nanowire aspect ratios. The magnetic behaviour of nanowires array is governed by the balance between different energy contributions: shape anisotropy of individual nanowires, the magnetostatic interaction of dipolar origin among nanowires, and magnetocrystalline and magnetoelastic anisotropies induced by the pattern templates. These novel nanocomposites, based on ferromagnetic nanowires embedded in anodic nanoporous templates, are becoming promising candidates for technological applications such as functionalised arrays for magnetic sensing, ultrahigh density magnetic storage media or spin-based electronic devices.

scholarly journals Facile decoding of quantitative signatures from magnetic nanowire arrays

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Mohammad Reza Zamani Kouhpanji ◽  
Ali Ghoreyshi ◽  
P. B. Visscher ◽  
Bethanie J. H. Stadler
Keyword(s):  
Nanowire Arrays ◽  
Magnetic Nanowires ◽  
Linear Combinations ◽  
First Order ◽  
Individual Type ◽  
Magnetic Nanowire ◽  
Data Points ◽  
Reversal Field ◽  
The Individual ◽  
Contact Free

Abstract Magnetic nanoparticles have been proposed as contact-free minimal-background nanobarcodes, and yet it has been difficult to rapidly and reliably decode them in an assembly. Here, high aspect ratio nanoparticles, or magnetic nanowires (MNWs), are characterized using first-order reversal curves (FORC) to investigate quantitative decoding. We have synthesized four types of nanowires (differing in diameter) that might be used for barcoding, and identified four possible “signature” functions that might be used to quickly distinguish them. To test this, we have measured the signatures of several combination samples containing two or four different MNW types, and fit them to linear combinations of the individual type signatures to determine the volume ratios of the types. We find that the signature which determines the ratios most accurately involves only the slope of each FORC at its reversal field, which requires only 2–4 data points per FORC curve, reducing the measurement time by a factor of 10 to 50 compared to measuring the full FORC.

scholarly journals Temperature-dependent magnetic anisotropy in the layered magnetic semiconductors CrI3 and CrBr3

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Nils Richter ◽  
Daniel Weber ◽  
Franziska Martin ◽  
Nirpendra Singh ◽  
Udo Schwingenschlögl ◽  
...  
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Semiconductors ◽  
Temperature Dependent

Self-assembled magnetic nanowire arrays

2007 ◽  
Vol 90 (10) ◽  
pp. 103105 ◽  
Author(s):  
Ming Liu ◽  
Jalal Lagdani ◽  
Hassan Imrane ◽  
Carl Pettiford ◽  
Jing Lou ◽  
...  
Keyword(s):  
Nanowire Arrays ◽  
Magnetic Nanowire ◽  
Self Assembled

Self-assembled magnetic nanowire arrays

2006 ◽  
Author(s):  
J. Lagdani ◽  
H. Imrane ◽  
C. Pettiford ◽  
J. Lou ◽  
S. D. Yoon ◽  
...  
Keyword(s):  
Nanowire Arrays ◽  
Magnetic Nanowire ◽  
Self Assembled

Magnetic nanowires: Fabrication and characterization

2017 ◽  
Author(s):  
Kleber Roberto Pirota ◽  
Angela Knobel ◽  
Manuel Hernandez-Velez ◽  
Kornelius Nielsch ◽  
Manuel Vázquez
Keyword(s):  
Magnetic Properties ◽  
Dynamic Properties ◽  
Future Research ◽  
Magnetic Nanowires ◽  
Temperature Dependent ◽  
Alumina Membranes ◽  
Single Nanowires ◽  
Future Research Directions ◽  
Fabrication And Characterization

This article describes the fabrication and characterization of magnetic nanowires, focusing on the magnetic properties of patterned arrays of metallic magnetic nanowires electrodeposited into the pores of anodized-alumina membranes. It also discusses the complex magnetization processes, both in isolated nanowires and in collectively patterned arrays. After providing an overview of the state-of-the-art on fabrication techniques of nanowires, the article considers the microstructure of magnetic nanowires and the magnetic properties of single nanowires. It then examines the collective behavior of arrays where the interactions among the magnetic entities play an important role, along with the transport properties of magnetic nanowires, the temperature-dependent effects (such as magnetoelastic-induced anisotropy), and the dynamic properties of magnetization such as ferromagnetic resonance characteristics and spin-wave excitations in ferromagnetic nanowires. Finally, it presents an overview of future research directions.

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