Magnetism in CaMnO3 thin films

被引：16
|
作者：
Flint, C. L. [1 ,2 ]
Grutter, A. J. [2 ,3 ,4 ]
Jenkins, C. A. [5 ]
Arenholz, E. [5 ]
Suzuki, Y. [2 ,6 ]
机构：
[1] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA
[2] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA
[3] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA
[5] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA
[6] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2014年 / 115卷 / 17期
关键词：
D O I：
10.1063/1.4864044
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Epitaxial CaMnO3 thin films on (001) LaAlO3, (LaAlO3)(0.3)(Sr2AlTaO6)(0.7), and SrTiO3 were synthesized in a range of strain states from coherently strained on LaAlO3 (1.6% strain) to fully relaxed on SrTiO3. We observed a magnetic ordering transition in CaMnO3 thin films suppressed from the Neel temperature of bulk CaMnO3 with the suppression increasing with increasing strain in the thin film. In contrast to bulk studies, our CaMnO3 films do not exhibit any sign of weak ferromagnetism according to field-dependent magnetization and x-ray magnetic circular dichroism measurements. Therefore, to within experimental resolution, all of our CaMnO3 films are antiferromagnetic with negligible oxygen off-stoichiometry. (C) 2014 AIP Publishing LLC.
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页数：3
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