Investigation of the cobalt distribution in TiO2:Co thin films

被引：87

作者：

Stampe, PA ^{[1
]}

Kennedy, RJ

Xin, Y

Parker, JS

机构：

[1] Florida A&M Univ, Dept Phys, Tallahassee, FL 32307 USA

[2] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[3] Florida State Univ, MARTECH, Tallahassee, FL 32306 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 92卷 / 12期

关键词：

D O I：

10.1063/1.1521259

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a detailed study of the morphology of TiO2:Co films grown on both LaAlO3 (001) and SrTiO3 (001) substrates by pulsed laser deposition. The films are optically transparent and ferromagnetic at room temperature with a magnetic moment of 1.7+/-0.4 mu(B)/Co. Plan view transmission electron microscope studies show clear evidence of cobalt segregation with the clustering more pronounced for higher cobalt concentrations. Films grown on SrTiO3 substrates show the presence of a thin surface rutile (111) layer, into which the cobalt appears to migrate. These results are supported by x-ray structure determination and resistivity measurements. (C) 2002 American Institute of Physics.

引用

页码：7114 / 7121

页数：8

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