Metal insulator transition with ferrimagnetic order in epitaxial thin films of spinel NiCo2O4
Metal insulator transition with ferrimagnetic order in epitaxial thin films of spinel NiCo2O4
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DOI：
10.1063/1.3676439
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发表时间：
2012-01-16
影响因子：
4
通讯作者：
Kim, Dae Ho
中科院分区：
文献类型：
--
作者：
Silwal, Punam;Miao, Ludi;Kim, Dae Ho
采用脉冲激光沉积法在MgAl_2O_4（001）单晶衬底上生长了尖晶石型NiCo_2O_4外延薄膜。磁化测量显示磁滞回线与报告的亚铁磁顺序一致。电传输表现出金属的行为与最低的电阻率为0.8米Ω cm和金属绝缘体的转变周围的尼尔温度。在不同的生长温度下生长的薄膜的性质的系统变化表明磁序和电输运之间的密切关系。(C)2012年美国物理学会。[doi：10.1063/1.3676439]
We have grown epitaxial thin films of spinel NiCo2O4 on single crystalline MgAl2O4 (001) substrates by pulsed laser deposition. Magnetization measurement revealed hysteresis loops consistent with the reported ferrimagnetic order. The electrical transport exhibits a metallic behavior with the lowest resistivity of 0.8 m Omega cm and a metal insulator transition around the Neel temperature. The systematic variation in the properties of the films grown at different growth temperatures indicates a close relationship between the magnetic order and electrical transport. (C) 2012 American Institute of Physics. [doi:10.1063/1.3676439]