Effect of substrate temperature on electrical and magnetic properties of epitaxial La$_{1-e?‘￥}$Pb$_{e?‘￥}$MnO3 ???lms

摘要

Epitaxial La1-e?‘￥Pbe?‘￥MnO3 (LPMO) thin ???lms, grown on (100) SrTiO3 substrates by laser ablation technique at different temperatures between 600 and 850?°C, have been characterized for electrical and magnetic properties. The temperature dependence of resistivity showed that the metala€“insulator transition temperature (e?‘?MI) decreases with increasing substrate temperature, which has been attributed to decrease in Pb content in the ???lms. The YBa2Cu3Oe?‘￥/La1-e?‘￥Pbe?‘￥MnO3 heterostructures, exhibiting both superconductivity and ferromagnetism, have been fabricated.