Giant magnetoresistance and anomalous magnetic properties of highly epitaxial ferromagnetic LaBaCo2O(5.5+δ) thin films on (001) MgO

Ming Liu; Chunrui Ma; Jian Liu; Gregory Collins; Chonglin Chen; Jie He; Jiechao Jiang; Efstathios I Meletis; Li Sun; Allan J Jacobson; Myung-Hwan Whangbo

doi:10.1021/am301427c

Giant magnetoresistance and anomalous magnetic properties of highly epitaxial ferromagnetic LaBaCo2O(5.5+δ) thin films on (001) MgO

ACS Appl Mater Interfaces. 2012 Oct 24;4(10):5524-8. doi: 10.1021/am301427c. Epub 2012 Sep 21.

Authors

Ming Liu¹, Chunrui Ma, Jian Liu, Gregory Collins, Chonglin Chen, Jie He, Jiechao Jiang, Efstathios I Meletis, Li Sun, Allan J Jacobson, Myung-Hwan Whangbo

Affiliation

¹ Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.

PMID: 22967042
DOI: 10.1021/am301427c

Abstract

Ferromagnetic thin films of the A-site nano-ordered double perovskite LaBaCo(2)O(5.5+δ) (LBCO) were grown on (001) MgO, and their structural and magnetic properties were characterized. The as-grown films have an excellent epitaxial behavior with atomically sharp interfaces, with the c-axis of the LBCO structure lying in the film plane and the interface relationship given by (100)(LBCO)//(001)(MgO) and [001](LBCO)//[100](MgO) or [010](MgO). The as-grown LBCO films exhibit a giant magnetoresistance (54% at 40 K under 7 T) and an anomalous magnetic hysteresis, depending strongly on the temperature and the applied magnetic field scan width.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.