Paper Title:
Magnetoresistance of La2/3(CaxBa1-x)1/3MnO3/NiO Composite Materials
  Abstract

Ferromagnetic (FM) La2/3(Ca0.6Ba0.4)1/3MnO3 and antiferromagnetic (AFM) NiO nanoparticles were synthesized using sol-gel method, respectively. La2/3(Ca0.6Ba0.4)1/3MnO3 (1 mol)/ x NiO (x= 0, 0.05 and 0.15mol) composites with the coated NiO were prepared. The experimental results indicate that, both phases of LCBMO and NiO coexist clearly in the composites and the sizes of the NiO nanoparticles in the intergranular region between the LCBMO particles are very small; the interface of NiO influences evidently the value of MR and it is found that the tunneling MR for x=0.05 is the largest in three samples. The magnetoresistance behavior has been explained by two-level model of tunneling magnetoresistance and percolation model well.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
897-900
DOI
10.4028/www.scientific.net/MSF.475-479.897
Citation
S. Y. Chen, Z. G. Huang, H. Lai, R. Gai, F. M. Zhang, Y. W. Du, "Magnetoresistance of La2/3(CaxBa1-x)1/3MnO3/NiO Composite Materials", Materials Science Forum, Vols. 475-479, pp. 897-900, 2005
Online since
January 2005
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