Paper Title:
Electrical Conductivity and Low-Field Magnetoresistance in La2/3(Ca0.60Ba0.40)1/3Mn1-xVxO3 Prepared by Sol-Gol
  Abstract

La2/3(Ca0.6Ba0.4)1/3Mn1-xVxO3 (x=0, 0.03, 0.05, 0.07, 0.10, 0.15, 0.20) nanoparticles were synthesized using sol-gel technology. The experimental results reveal that, (1) the substitution of V for Mn in La2/3(Ca0.6Ba0.4)1/3Mn1-xVxO3 lowers the Curie temperature TC and the metal–insulator transition temperature TMI; (2) there exists the evident difference between the TC and the TMI for different V substitution ratio; (3) the low-temperature tunneling magnetoresistance and maximum magnetoresistance near Tc increase with the enhancement of V-doping content. Based on the tunneling magnetoresistance model and the percolation model near Curie temperature, the experimental results are explained well.

  Info
Periodical
Solid State Phenomena (Volumes 121-123)
Edited by
Chunli BAI, Sishen XIE, Xing ZHU
Pages
901-904
DOI
10.4028/www.scientific.net/SSP.121-123.901
Citation
H. Zhang, S. Y. Chen, S. Z. Tang, W. P. Ke, H. Lai, Z. G. Huang, "Electrical Conductivity and Low-Field Magnetoresistance in La2/3(Ca0.60Ba0.40)1/3Mn1-xVxO3 Prepared by Sol-Gol", Solid State Phenomena, Vols. 121-123, pp. 901-904, 2007
Online since
March 2007
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$32.00
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