Strain dependent defect mediated ferromagnetism in Mn-doped and undoped ZnO thin films

被引：21

作者：

Schoofs, Frank ^{[1
]}

Fix, Thomas ^{[1
]}

Hakimi, Ali M. H. R. ^{[1
]}

Dhesi, Sarnjeet S. ^{[2
]}

van der Laan, Gerrit ^{[2
]}

Cavill, Stuart A. ^{[2
]}

Langridge, Sean ^{[3
]}

MacManus-Driscoll, Judith L. ^{[1
]}

Blamire, Mark G. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

[2] Diamond Light Source, Didcot OX11 0DE, Oxon, England

[3] Rutherford Appleton Lab, Sci & Technol Facil Council, Didcot OX11 0QX, Oxon, England

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 108卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

TEMPERATURE FERROMAGNETISM; ABSORPTION-SPECTRA;

D O I：

10.1063/1.3455856

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The structural and magnetic properties of pulsed laser deposited zinc oxide thin films have been investigated. Room temperature ferromagnetism is present in undoped as well as Mn-doped films. The saturation magnetization of the thin films reveals a dependence on both the composition and the out of plane lattice parameter. X-ray magnetic circular dichroism down to 2 K reveals a purely paramagnetic contribution from the Mn in Mn:ZnO films. We conclude that the observed ferromagnetism arises entirely from intrinsic defects in the ZnO which can be varied by manipulation of the lattice parameter. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3455856]

引用

页数：5

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