摘要
一种新的庞磁电阻氧化物薄膜La_(1-x)Pr_xMnO_3(x=0.1,0.2)薄膜用脉冲激光沉积(PLD)方法生长在(100)SrTiO_3单晶基底上.XRD结果显示薄膜具有很好的外延单晶取向.电输运和磁性质的研究表明薄膜具有显著的庞磁电阻效应(CMR)效应,其中磁电阻比率达95%(在5T的磁场下).X射线光电子能谱(XPS)的结果表明薄膜体系中Pr离子的价态为+4价,因此该薄膜很可能是电子掺杂的庞磁电阻体系.
The oxide La1-xPrx MnO3 ( x = 0.1, 0.2) thin film showing colossal magnetoresistance has been epitaxially grown on (100) SrTiO3 single-crystal substrate by pulsed-laser deposition. The films have a perovskite structure and perform the colossal magnetoresistance effect with the maximum magnetoresistance ratio of 95 % under the magnetic field of 5 T. The valence of Pr is confirmed as + 4 through XPS. Therefore the epitaxial film is most likely an electron-doped colossal magnetoresistance fihn.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第3期1441-1446,共6页
Acta Physica Sinica