Journal of East China Normal University(Natural Sc ›› 2010, Vol. 2010 ›› Issue (3): 57-62.

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Enhanced low field magnetoresistance in nanostructured Sr2FeMoO6/CeO2 composites

LI Xiang-Hu, LI Dan   

  1. Department of Mathematics and Physics, Wuhan Polytechnic University, Wuhan 430023, China
  • Received:2009-06-17 Revised:2009-09-15 Online:2010-05-25 Published:2010-05-25
  • Contact: LI Xiang-Hu

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Abstract: The electric transport properties of the nanostructrued (Sr2FeMoO6)1- x/(CeO2) xcomposition were investigated. It was found that the lowfield magnetoresistance of the composition is higher than that of the pure Sr2FeMoO6/CeO2 material in the whole region of temperature. The magnetoresistance ratios at 10 K and 300 K with H=2 kOe for the x =0.3 sample are 1.7 times and 1.3 times as large as that for the pureSr2FeMoO6, respectively. This means that the spin dependent tunneling at the interfaces of grain boundaries is responsible for the enhanced MR.

Key words: Sr2FeMoO6, magnetoresistance, Sol gel method, Sr2FeMoO6, magnetoresistance

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