We have investigated structural and magnetic properties of cobalt ferrite (CFO)(001) epitaxial thin films grown by RF magnetron sputtering method on (Mg,Sn)₃O₄ (MSO) buffer layers to induce large perpendicular magnetic anisotropy (PMA) through the magneto-elastic effect. Tuning of the CFO distortion was demonstrated by changing the film thickness of CFO. Torque measurements revealed that a 5-nm thick CFO thin film showed the PMA constant $K_{u} = 25.8\pm 1.3$ Merg/cm³ at room temperature, which is extraordinarily large for a ferromagnetic oxide.

中文翻译：

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在 (Mg, Sn) ₃ O ₄缓冲层上生长的钴铁氧体薄膜中晶格畸变引起的感应磁各向异性研究

我们研究了通过射频磁控溅射法在 (Mg,Sn) ₃ O ₄ (MSO) 缓冲层上生长的钴铁氧体 (CFO)(001) 外延薄膜的结构和磁性能，通过磁弹性效应。通过改变 CFO 的薄膜厚度来展示 CFO 失真的调整。扭矩测量表明，5 纳米厚的 CFO 薄膜显示出 PMA 常数 $K_{u} = 25.8\pm 1.3$ 室温下的Merg/cm ³，这对于铁磁氧化物来说是非常大的。