The effect of Joule-heating on hysteresis loops and giant magnetoimpedance effect, GMI; of Co_69.2Fe_3.6Ni₁B_12.5Si₁₁Mo_1.5C_1.2 glass-coated microwire is studied. Joule heating performed at suitable conditions prevents the magnetic hardening observed during conventional furnace annealing of the studied microwires. A remarkable GMI ratio improvement is observed as compared to as-prepared annealed and even stress-annealed microwires. Observed magnetic softening and GMI ratio improvement have been discussed considering magnetic anisotropy induced by Oersted magnetic field during Joule heating and internal stresses relaxation.

中文翻译：

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焦耳加热对富钴微丝巨磁阻抗效应和磁性能的影响

焦耳加热对磁滞回线和巨磁阻抗效应的影响，GMI；Co _69.2 Fe _3.6 Ni ₁ B _12.5 Si ₁₁ Mo _1.5 C _1.2玻璃包覆微丝的研究。在合适的条件下进行焦耳加热可防止在研究的微丝的常规炉退火过程中观察到的磁硬化。与制备的退火甚至应力退火微丝相比，观察到显着的 GMI 比改进。考虑到在焦耳加热和内应力松弛过程中由奥斯特磁场引起的磁各向异性，已经讨论了观察到的磁软化和 GMI 比的改进。