Mechanically tunable thickness-dependent magnetic properties of flexible SrRuO3 thin films
Mechanically tunable thickness-dependent magnetic properties of flexible SrRuO3 thin films
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DOI：
10.1016/j.ceramint.2022.12.070
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发表时间：
2022-12
影响因子：
5.2
通讯作者：
Jing Wang;Fengguang Liu;Chunlan Ma;Caixia Wang;A. Rahman;Yan Zhu;Jiyu Fan
中科院分区：
文献类型：
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作者：
Jing Wang;Fengguang Liu;Chunlan Ma;Caixia Wang;A. Rahman;Yan Zhu;Jiyu Fan
采用脉冲激光沉积技术，以BaTiO 3（BTO）为缓冲层，在氟金云母衬底上外延生长了SrRuO 3（SRO）系列单晶薄膜。在平行和垂直于薄膜表面的外场作用下，测量了温度和磁场对磁化强度的影响。结果表明，SRO薄膜的居里温度TC、饱和磁化强度MS和矫顽力HC与薄膜厚度和弯曲状态密切相关.随着膜厚从50 nm增加到200 nm，MS从280.63 emu/cm 3增加到422.39 emu/cm 3，而HC从1.35 T减小到0.72 T。当SRO薄膜处于凸弯或凹弯状态时，其T_C从155.41略微增加到160 K。机械弯曲的调节和膜厚的变化对SRO薄膜的磁性能及其在柔性器件中的潜在应用产生重要影响。
A series of SrRuO 3 (SRO) single crystalline thin films were grown epitaxially on the flexible substrate of fluorophlogopite by using pulsed laser deposition technology with a BaTiO 3 (BTO) buffer layer. The temperature and magnetic field dependences on magnetization were measured as the external field which is parallel and perpendicular to the film surface. The results indicate that the magnetic properties of SRO thin films, including Curie temperature T C, saturation magnetization M S, and coercivity H C, are strongly dependent on the film thickness and the bending state. M S increases from 280.63 to 422.39 emu/cm 3 as the film thickness increases from 50 to 200 nm while H C decreases from 1.35 to 0.72 T. T C is slightly increased from 155.41 to∼ 160 K as the SRO thin films are subjected to convex or concave bending states. The regulation of mechanical bending and the variation of the film thickness exert significant influences on the magnetic properties of the SRO thin films and their potential application in flexible devices.