Strain-induced cooling-heating switching of anisotropic magneto-Peltier effect
Strain-induced cooling-heating switching of anisotropic magneto-Peltier effect
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DOI：
10.1063/5.0034858
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发表时间：
2021-01-11
影响因子：
4
通讯作者：
Uchida, Ken-ichi
中科院分区：
文献类型：
--
作者：
Hirai, Takamasa;Sepehri-Amin, Hossein;Uchida, Ken-ichi
利用沉积在有机柔性衬底上的Ni薄膜，通过拉伸衬底可以引入1%量级的应变，证明了由各向异性磁珀耳帖效应（AMPE）引起的冷却和加热之间的单轴应变诱导切换.利用锁相热成像技术，我们观察到当Ni层中的逆磁致伸缩效应改变其磁化方向时，AMPE引起的温度调制的可逆符号反转。我们的演示将为实现基于自旋热电子学的主动和多功能热管理铺平道路。
Uniaxial-strain-induced switching between cooling and heating generated by the anisotropic magneto-Peltier effect (AMPE) is demonstrated using a Ni thin film deposited on an organic flexible substrate, where 1%-order strain can be introduced by stretching the substrate. By means of the lock-in thermography technique, we observed the reversible sign reversal of the AMPE-induced temperature modulation when the inverse magnetostrictive effect in the Ni layer changes its magnetization direction. Our demonstration would pave the way for realizing the active and versatile thermal management based on spin caloritronics.