Microstructure and properties of La0.7Sr0.3MnO3 films deposited on LaAlO3 (100), (110), and (111) substrates

作者：Du Yongsheng; Zhang Xuefeng^*; Yu Dunbo; Yan Hui

来源：Journal of Rare Earths, 2006, 24(5): 560-563.

DOI：10.1016/S1002-0721(06)60163-4

• La0.7Sr0.3MnO3 film
• strain
• crystallographic
• elastic modulus
• rare earths

A comparative study of the crystalline structure, magnetic properties, and transport properties of LSMO films grown on (100)-, (110)-, and (111) LaAlO3(LAO) substrates was carried out. Using atomic force microscopy, round, rectangle, and dot surface morphologies were observed in (100)-, (110)-, and (111)-oriented LSMO films, respectively. Electrical and magnetic characterizations were performed on LSMO films of different orientation to provide evidence for the effect of strain on the magnetotransport properties. The (111) -oriented LSMO film has higher saturation magnetization and lower resistance compared with the (100)- and (110)-oriented LSMO films, which results from the smaller elastic deformation due to the larger elastic modulus along the < 111 > crystallographic direction.

• 出版日期2006-10
• 单位内蒙古大学; 北京工业大学