Metal insulator transition with ferrimagnetic order in epitaxial thin films of spinel NiCo2O4.
- Resource Type
- Article
- Authors
- Silwal, Punam; Miao, Ludi; Stern, Ilan; Zhou, Xiaolan; Hu, Jin; Ho Kim, Dae
- Source
- Applied Physics Letters. 1/16/2012, Vol. 100 Issue 3, p032102. 3p. 4 Graphs.
- Subject
- *METAL insulator semiconductors
*FERRIMAGNETISM
*COBALT nickel alloys
*MAGNETIC properties of thin films
*MAGNETIZATION measurement
*PULSED laser deposition
- Language
- ISSN
- 0003-6951
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 mࡎ cm and a metal insulator transition around the Néel 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. [ABSTRACT FROM AUTHOR]