Pawlak Jakub, Żywczak Antoni, Kanak Jarosław, Przybylski Marek
Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland.
Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, 30-059 Kraków, Poland.
Materials (Basel). 2020 Sep 17;13(18):4148. doi: 10.3390/ma13184148.
Changes in stoichiometry, temperature, strain and other parameters dramatically alter properties of LSMO perovskite. Thus, the sensitivity of LSMO may enable control of the magnetic properties of the film. This work demonstrates the capabilities of interface engineering to achieve the desired effects. Three methods of preparing STO substrates were conducted, i.e., using acid, buffer solution, and deionized water. The occurrence of terraces and their morphology depend on the preparation treatment. Terraces propagate on deposited layers and influence LSMO properties. The measurements show that anisotropy depends on the roughness of the substrate, the method of preparing the substrate, and oxygen treatment. The collected results suggest that the dipolar mechanism may be the source of LSMO anisotropy.
化学计量比、温度、应变及其他参数的变化会极大地改变LSMO钙钛矿的性质。因此，LSMO的敏感性可能实现对薄膜磁性的控制。这项工作展示了界面工程实现预期效果的能力。进行了三种制备STO衬底的方法，即使用酸、缓冲溶液和去离子水。平台的出现及其形态取决于制备处理。平台在沉积层上扩展并影响LSMO的性质。测量结果表明，各向异性取决于衬底的粗糙度、衬底的制备方法以及氧处理。收集到的结果表明，偶极机制可能是LSMO各向异性的来源。
