Paper Title:

Magnetoresistance of Nanostructured Sr2FeMoO6/CeO2 Composites

Periodical Advanced Materials Research (Volume 507)
Main Theme Sport, Arts Materials and Management Science
Edited by Wenjiang Du
Pages 44-47
DOI 10.4028/www.scientific.net/AMR.507.44
Citation Xiang Hu Li et al., 2012, Advanced Materials Research, 507, 44
Online since April, 2012
Authors Xiang Hu Li, Dan Li, Dong Wu Xiao
Keywords Double Perovskite, Sol-Gel Method, Sr2FeMoO6
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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.