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首页> 外文期刊>IEEE Transactions on Magnetics >Effect of Stress on Magnetic Properties of Annealed Glass-Coated Co71Fe5B11Si10Cr3 Amorphous Microwires
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Effect of Stress on Magnetic Properties of Annealed Glass-Coated Co71Fe5B11Si10Cr3 Amorphous Microwires

机译：应力对退火玻璃涂层Co 71 Fe 5 B 11 Si 10 Cr 的磁性能的影响> 3 非晶微线

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摘要

Various thermal treatments have long been known to be effective in tailoring structural and magnetic properties of amorphous ferromagnetic wires, consequently, a desired magnetic anisotropy can be controlled for specific sensing applications. This paper deals with the effects of annealing and applied stresses on the magnetization processes and magnetoimpedance (MI) in Co71Fe5B11Si10Cr3 glass-coated microwires having amorphous or partially crystalline structure. The alloy under study has a small positive magnetostriction (approximately 10-8) in its amorphous unstressed state. By applying a tensile stress to amorphous microwires, an abrupt transformation of the hysteresis loop is observed owing to the anisotropy type change due to stress-dependent magnetostriction which changes sign. The modification in the anisotropy type greatly enhances the stress sensitivity of higher frequency harmonics induced during re-magnetization and MI. The wires with a partially crystalline structure did not exhibit a noticeable stress dependence of magnetic properties, but after annealing a significant increase in coercivity was observed after applying a tensile stress. The obtained results were investigated in terms of a magnetostrictive model of magnetic anisotropy offering a reasonable explanation.
机译：长期以来已知各种热处理可有效地调整非晶态铁磁线的结构和磁性能，因此，可以针对特定的传感应用控制所需的磁各向异性。本文研究了退火和外加应力对Co 71 Fe 5 B 11 Si <>的磁化过程和磁阻抗（MI）的影响。具有非晶或部分结晶结构的sub> 10 Cr 3 玻璃微丝。所研究的合金在非晶无应力状态下具有小的正磁致伸缩（约10 -8 ）。通过向非晶态微线施加拉伸应力，由于各向异性类型的变化（由于应力相关的磁致伸缩会改变符号），可以观察到磁滞回线的突然转变。各向异性类型的修改极大地增强了在重新磁化和MI中感应的高频谐波的应力敏感性。具有部分结晶结构的线材没有表现出明显的应力对磁性的依赖性，但是在退火后，施加拉应力后观察到矫顽力显着增加。根据磁各向异性的磁致伸缩模型对获得的结果进行了研究，从而提供了合理的解释。

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