Strain Manipulation of Magnetic Anisotropy in Room-Temperature Ferrimagnetic Quadruple Perovskite CeCu3Mn4O12
Strain Manipulation of Magnetic Anisotropy in Room-Temperature Ferrimagnetic Quadruple Perovskite CeCu3Mn4O12
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DOI：
10.1021/acsaelm.9b00547
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发表时间：
2019-10
影响因子：
4.7
通讯作者：
K. Shigematsu;K. Shimizu;Kazumasa Yamamoto;T. Nishikubo;Y. Sakai;S. Nikolaev;H. Das;M. Azuma
中科院分区：
文献类型：
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作者：
K. Shigematsu;K. Shimizu;Kazumasa Yamamoto;T. Nishikubo;Y. Sakai;S. Nikolaev;H. Das;M. Azuma
四重钙钛矿氧化物的外延生长提供了扩展其功能的机会，并可能导致器件应用。在YAlO3（110）衬底上生长的CeCu3Mn4O12外延薄膜具有超过400K的Neel温度和室温下的金属输运性质，这是由于氧化沉积过程稳定了Ce4+和Mn3.5+的高价态。单轴磁各向异性在CeCu3Mn4O12中诱导，其易磁化轴平行于正交YAlO3[10]，其中CeCu3Mn4O12最长。在压应变CeCu_3Mn_4O_（12）中插入少量YCaAlO_4缓冲层可以实现超导磁各向异性。这种磁各向异性的趋势在应变CeCu3Mn4O12是在良好的协议与理论计算。
Epitaxial growth of quadruple perovskite oxides presents an opportunity to expand their functionality and may lead to device applications. CeCu3Mn4O12 epitaxial thin film grown on YAlO3(110) exhibits a Neel temperature exceeding 400 K and metallic transport properties at room temperature, which can be accounted for by the high valence states of the constituting Ce4+ and Mn3.5+ stabilized by the oxidative deposition process. Uniaxial magnetic anisotropy is induced in CeCu3Mn4O12, whose easy axis lies parallel to orthorhombic YAlO3[10] where CeCu3Mn4O12 is most elongated. Perpendicular magnetic anisotropy can be realized in compressively strained CeCu3Mn4O12 by inserting a small YCaAlO4 buffer layer. This trend of magnetic anisotropy in strained CeCu3Mn4O12 was in good agreement with theoretical calculations.