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Published in: Journal of Materials Science: Materials in Electronics 6/2015

01-06-2015

Signature of antiferromagnetism in entropy maximized charge density distribution of melt grown diluted magnetic semiconductor Ge1−xVx

Authors: R. A. J. R. Sheeba, R. Saravanan, L. J. Berchmans

Published in: Journal of Materials Science: Materials in Electronics | Issue 6/2015

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Abstract

Diluted magnetic semiconductor Ge1−xVx with three different dopant concentrations x = 0.03, 0.06 and 0.09 has been grown using melt growth technique. Scanning electron microscopy was used to analyze the surface morphological nature of the samples. Magnetic measurements taken using vibrating sample magnetometer reveal the diamagnetic nature for x = 0.03 and antiferromagnetic for x = 0.06 and 0.09. Powder X-ray diffraction data sets were collected for the samples and the structure was analysed using profile refinement technique and charge density was analysed using the versatile statistical tool maximum entropy method. Charge density analysis reveals that when x = 0.06 and 0.09 the system exhibits covalent bonding and picturises the signature of antiferromagnetism. The local structure was analyzed using pair distribution function technique.

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Metadata
Title
Signature of antiferromagnetism in entropy maximized charge density distribution of melt grown diluted magnetic semiconductor Ge1−xVx
Authors
R. A. J. R. Sheeba
R. Saravanan
L. J. Berchmans
Publication date
01-06-2015
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 6/2015
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-015-2901-y

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