Magnetoelastic anisotropy distribution in glass-coated microwires
Magnetoelastic anisotropy distribution in glass-coated microwires
复制标题
玻璃涂层微丝中的磁弹性各向异性分布
DOI：
10.1557/jmr.1996.0315
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发表时间：
1996
影响因子：
2.7
通讯作者：
A. Zhukov
中科院分区：
文献类型：
--
作者：
J. Velázquez;M. Vázquez;A. Zhukov
通过玻璃涂层熔融纺丝方法获得的直径在微米范围内的非晶微丝，可以表现出完美的方形（单个和大的巴克豪森跃变）或准非磁滞磁滞回线，具体取决于由固有磁弹性各向异性决定的易磁化方向。这里通过考虑经典弹性理论来计算在模拟域结构的制造过程中冻结的热弹性内应力。获得大小为 10^3 MPa 的复杂应力分布。结果证明，圆形应力占主导地位，这是由微丝的复合性质（金属核和具有不同机械和热性能的绝缘玻璃涂层）引起的。
Amorphous microwires, obtained by the glass-coated melt-spinning method having diameters in the range of micrometers, can exhibit perfectly square (single and large Barkhausen jump) or quasi-anhysteretic hysteresis loops, depending on the easy magnetization direction determined by the intrinsic magnetoelastic anisotropy. The thermoelastic internal stressed frozen-in during the fabrication that model the domain structure are here calculated by considering the classical theory of elasticity. A complex stress distribution is obtained having magnitude of 10^3 MPa. Circular stresses turn out to be predominant, which arises from the composite nature of the microwire (metallic nucleus and insulating glass coating having different mechanical and thermal properties).