Triple perovskite Sr₃CrFeMoO₉ ultrathin films with ferromagnetism above room temperature

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• 作者：Zheng Li ; Long Jiao ; Wei-Jing Ji ; Jie Xu ; Jin-Feng Wang ; Zheng-Bin Gu ; Jian Zhou ; Shu-Hua Yao ; Y.B. Chen ; Shan-Tao Zhang ; Yan-Feng Chen
• 关键词：Triple perovskite ; Films ; Room temperature ferromagnetism ; Magnetoresistance
• 刊名：Scripta Materialia
• 出版年：2013
• 出版时间：October, 2013
• 年：2013
• 卷：69
• 期：8
• 页码：590-593
• 全文大小：737 K

文摘

A novel ferromagnetic triple perovskite Sr₃CrFeMoO₉ was designed and ultrathin films were fabricated. The films are highly strained, with a sharp film/substrate interface. The valences of the Cr, Fe and Mo cations are +3, +3 and +6, respectively. Well-saturated ferromagnetic hysteresis loops are observed at room temperature and 10 K, and the Curie temperature should be higher than 400 K, as indicated by the temperature-magnetization curve. The films show semiconductor-like behavior with almost negligible magnetoresistance. The possible spin configuration is analyzed based on experimental results.