基金financially supported by the National Natural Science Foundation of China (12174237, 51901118, 51871137, and 52171183)the 1331 Engineering of Shanxi Province, the Research Project Supported by Shanxi Scholarship Council of China (2021-093)+1 种基金the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi (2020L0237)the Project funded by China Postdoctoral Science Foundation (2023M730422)。
文摘采用脉冲激光沉积法在单晶SrTiO3(STO)基底上制备了La0.62Ca0.29K0.09MnO3(LCKMO)薄膜,通过调控基底温度获得了平整致密的膜层.利用二维面探X射线衍射仪和高分辨透射电子显微镜对薄膜结构进行了表征.结果表明,薄膜呈高质量取向外延生长,对应关系为{001}LCKMO||{001}STO.对薄膜的磁热性能研究表明,5 T下最大磁熵变为3.45 J/(kg·K),相对制冷效率为379.5 J/kg,磁熵半峰宽为110 K.
