Structural and magnetic properties of epitaxial thin films of the ordered double perovskite La2CoMnO6

被引：91

作者：

Guo, H. Z.

Gupta, A. ^{[1
]}

Calvarese, T. G.

Subramanian, M. A.

机构：

[1] Univ Alabama, Ctr Mat Informat Technol, Tuscaloosa, AL 35487 USA

[2] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA

[3] Dupont Cent Res & Dev, Expt Stn, Wilmington, DE 19880 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 26期

关键词：

D O I：

10.1063/1.2422878

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Epitaxial thin films of the ordered ferromagnetic double perovskite La2CoMnO6 have been grown on (001)-oriented SrTiO3 substrates by pulsed laser deposition. X-ray photoemission spectroscopy analysis suggests that the Mn and Co ions are primarily in the 4+ and 2+ valence states. Magnetic measurements indicate the presence of two phases: a majority and a minority ferromagnetic phase with transition temperatures of 230 and 80 K, respectively. A spin-glass-type magnetic behavior is also indicated for the films based on time-dependent measurements. The spin-glass behavior likely arises from a competition between ferromagnetic and antiferromagnetic interactions because of local disorder, even in films grown under optimal conditions.(c) 2006 American Institute of Physics.

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