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Magnetoresistance of Nanostructured Sr2FeMoO6/CeO2 Composites

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Abstract:

(Sr2FeMoO6)1-x/(CeO2)x composites with nanosized crystallite were prepared by Sr2FeMoO6 obtained from the sol-gel method and nanosized CeO2 powders. The magnetoresistance of composites increase with the CeO2 increasing. And the MR ratio at 10 K is 1.23%, and 2.48% for the x = 0.05 and 0.2 samples with H = 1 kOe, which are 1.25 times and 2.53 times as large as that for pure Sr2FeMoO6, respectively. The enhanced magnetoresistance was attributed to the spin-dependent tunneling at the interface of grain boundaries.

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Periodical:

Advanced Materials Research (Volume 507)

Pages:

44-47

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.507.44

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Online since:

April 2012

Authors:

Xiang Hu Li, Dan Li, Dong Wu Xiao

Keywords:

Double Perovskite, Sol-Gel Method, Sr2FeMoO6

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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