电流退火及长度对玻璃包裹丝GMI效应的影响
发布时间:2018-04-18 15:12
本文选题:巨磁阻抗 + 电流退火 ; 参考:《华东师范大学学报(自然科学版)》2017年03期
【摘要】:采用高频感应加热熔融快淬法制各了Fe_(73.5)Cu_(1.0)Nb_(3.0)Si_(13.5)B_9非晶玻璃包裹丝.首先对制备态包裹丝进行电流退火,结果发现电流密度为4.2×10~7 A/m~2时,退火得到的玻璃包裹丝性能最佳,原因是此时有合适的纳米晶体积比例.进而研究了长度对其磁性和巨磁阻抗效应的影响.结果表明,随着长度的减小,微丝的各项异性场增大,磁阻抗比减小,采用退磁场模型给予了合理解释.
[Abstract]:Using high frequency induction heating melt quench method Fe_ (73.5) Cu_ (1) Nb_ (3) Si_ (13.5) B_9 amorphous glass coated wire. Firstly deposited wire current annealing, the current density is 4.2 * 10~7 A/m~2, obtained by annealing microwires best performance. The reason is nanocrystalline volume ratio of the right. Then study the influence on the length of the magnetic properties and giant magneto impedance effect. The results show that with the length of the reduced anisotropy field increases actin filaments, GMI ratio decreases, the demagnetizing field model is explained.
【作者单位】: 华东师范大学物理与材料科学学院;
【基金】:国家自然科学基金(51302085;11574084;51572086)
【分类号】:TQ171.1
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本文编号:1768898
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