探索富钴微线中磁性能和磁阻效应的温度依赖性

IF 6.7 3区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
P. Corte-Leon , I. Skorvanek , F. Andrejka , M. Jakubcin , V. Zhukova , A. Zhukov
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引用次数: 0

摘要

我们研究了钴69.2铁3.6镍1B12.5硅11钼1.5碳1.2玻璃涂层微线的磁性能和巨磁阻效应的温度依赖性。在加热过程中,观察到 GMI 比值 ΔZ/Z 值和磁场 H 依赖性以及磁滞回线发生了显著变化。加热时磁滞环形状的变化与 ΔZ/Z (H) 相关性的变化相关。在原样和大多数热处理样品中,加热时磁滞环从倾斜变为方形,这与 ΔZ/Z (H) 相关性从双峰变为单峰有关。不过,在 118 兆帕斯卡应力退火的样品中,ΔZ/Z(H) 相关性和滞后环的热稳定性更好。在所有研究的样品中,都观察到了 300 °C 时 GMI 比率的增加。我们从霍普金森效应、内应力的温度依赖性和松弛、诱导磁各向异性以及磁致伸缩系数的温度依赖性等方面讨论了所观察到的温度依赖性的起源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Exploring the temperature dependence of magnetic properties and magnetoimpedance effect in Co-rich microwires

We studied the temperature dependence of the magnetic properties and giant magnetoimpedance, GMI, effect in as-prepared and annealed Co69.2Fe3.6Ni1B12.5Si11Mo1.5C1.2 glass-coated microwires with nearly-zero magnetostriction. Substantial changes in the GMI ratio, ΔZ/Z, value and magnetic field, H, dependence, and in the hysteresis loops upon heating were observed. The modification in the hysteresis loop shape upon heating correlates with a change in the ΔZ/Z (H) dependencies. In as-prepared and most of the heat treated samples the hysteresis loop transformation from inclined to squared upon heating correlates with the change in ΔZ/Z(H) dependencies from double-peak to single-peak. However, the stress-annealed at 118 MPa samples present better thermal stability of the ΔZ/Z(H) dependencies and hysteresis loops. In all the studied samples an increase in the GMI ratio at 300 °C was observed. The origin of the observed temperature dependences is discussed in terms of the Hopkinson effect, temperature dependence and relaxation of internal stresses, induced magnetic anisotropy, and temperature dependence of the magnetostriction coefficient.

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来源期刊
Journal of Science: Advanced Materials and Devices
Journal of Science: Advanced Materials and Devices Materials Science-Electronic, Optical and Magnetic Materials
CiteScore
11.90
自引率
2.50%
发文量
88
审稿时长
47 days
期刊介绍: In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research. Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science. With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.
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