Magnetic properties of cobalt ferrite (001) films grown on spinel-type buffer layers
Magnetic properties of cobalt ferrite (001) films grown on spinel-type buffer layers
复制标题
DOI：
10.1109/tmag.2015.2448598
复制
发表时间：
2015-05
期刊：
影响因子：
--
通讯作者：
Y. Hisamatsu;T. Niizeki;H. Yanagihara;E. Kita
中科院分区：
文献类型：
--
作者：
Y. Hisamatsu;T. Niizeki;H. Yanagihara;E. Kita
为了改善在具有极大垂直磁各向异性的MgO基底上生长的CoxFe3-xO4(CFO)薄膜的界面磁性，我们尝试在CFO薄膜和MgO(001)基底之间插入两种不同的尖晶石型氧化物CoCr2O4(CCO)和MgTi2O4(MTO)。尽管两个缓冲层都是在 MgO(001) 上外延生长，但 CCO/MgO(001) 上的 CFO 薄膜变成了磁化强度显着降低的多晶。 MTO/MgO(001) 上的 CFO 薄膜的磁化强度随着 MTO 层厚度的变化而降低。 SIMS 实验揭示了 Co 和 Mg 的相互扩散。所有结果表明需要其他尖晶石型缓冲层来改善CFO(001)薄膜的界面磁性。有前景的尖晶石型化合物可能不含镁。
In order to improve the interface magnetism of the CoxFe3-xO4(CFO) films grown on MgO substrates that show extremely large perpendicular magnetic anisotropy, we attempted to insert two different spinel-type oxides of CoCr2O4 (CCO) and MgTi2O4 (MTO) between the CFO films and the MgO(001) substrates. Although both buffer layers were epitaxially grown on MgO(001), the CFO films on the CCO/MgO(001) became polycrystalline with a significantly lower magnetization. The magnetization of the CFO films on the MTO/MgO(001) decreased as a function of the MTO layer thickness. An SIMS experiment revealed an interdiffusion of Co and Mg. All the results indicate that other spinel-type buffer layers are required to improve the interface magnetism of the CFO(001) films. The promising spinel-type compound may not contain Mg .