Magnetic Properties of 3d Metal Rods With Composition Gradients Produced by Electroless Deposition

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-03-29 DOI:10.1109/LMAG.2022.3163015

Elena A. Denisova;Lidia A. Chekanova;Sergey V. Komogortsev;Svetlana A. Satsuk;Ivan V. Nemtsev;Rauf S. Iskhakov;Sergey V. Semenov

引用次数: 0

Abstract

A comparative study of the magnetic properties of arrays of Co–Ni rods with different composition gradients (smooth or step-like) along the rod axes was carried out. Ordered arrays of Co–Ni nanorods with diameters up to 400 nm and 8 µm length were prepared by electroless plating into a porous nuclear-track-etched polycarbonate membrane. The gradient in Co and Ni composition was confirmed by energy-dispersive X-ray analysis. The variation of Co–Ni contents along the long axis of the rods correlates with the gradient of the magnetization within the rod. Magnetization reversal was studied by analyzing the angular dependence of coercivity and using micromagnetic simulations. For both types of gradient rods, reversal occurs by curling. The local magnetic anisotropy field of rods with a step-type gradient is significantly higher than that for rods with a smooth gradient.

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化学沉积复合梯度三维金属棒的磁性能

对沿棒轴具有不同成分梯度（光滑或阶梯状）的Co–Ni棒阵列的磁性能进行了比较研究。通过在多孔核轨迹蚀刻聚碳酸酯膜上化学镀制备直径高达400 nm、长度为8µm的Co–Ni纳米棒有序阵列。通过能量色散X射线分析证实了Co和Ni成分的梯度。Co–Ni含量沿棒长轴的变化与棒内磁化强度的梯度相关。通过分析矫顽力的角度依赖性并使用微磁模拟来研究磁化反转。对于这两种类型的梯度棒，通过卷曲发生反转。阶梯型梯度棒的局部磁各向异性场明显高于光滑梯度棒的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.