Magnetomechanical sensing based on delta-E effect in Y3Fe5O12 micro bridge
Magnetomechanical sensing based on delta-E effect in Y3Fe5O12 micro bridge
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DOI：
10.1063/1.5090272
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发表时间：
2019-03-25
影响因子：
4
通讯作者：
Saitoh, Eiji
中科院分区：
文献类型：
--
作者：
Arisawa, Hiroki;Daimon, Shunsuke;Saitoh, Eiji
研究了室温下磁场对铁磁绝缘体Y3Fe5O12磁性微桥机械振动的影响。在微桥的饱和磁场作用下，微桥的机械共振频率呈现陡峭的变化。这种陡峭的变化是磁弹性耦合和形状磁各向异性共同作用的结果。形状磁各向异性和外加磁场之间的竞争可以在较窄的磁场范围内驱动Delta-E效应，即通过磁弹性耦合对杨氏模量的调制，从而导致观察到的力学性能的急剧变化。由AIP出版公司授权出版。
We have investigated magnetic field effects on mechanical vibration of a magnetic microbridge made of ferrimagnetic insulator Y3Fe5O12 at room temperature. The mechanical resonance frequency of the bridge exhibits a steep change at the saturation magnetic field of the microbridge. The steep change was shown to originate from magnetoelastic coupling combined with shape magnetic anisotropy. The competition between shape magnetic anisotropy and the external magnetic field can drive a delta-E effect, the modulation of Young modulus via the magnetoelastic coupling, in a narrow field range, which results in the observed steep change in the mechanical property. Published under license by AIP Publishing.