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Research on order phase and second-entering-type spin glass behavior of La0.3Ca0.7Mn1-xVxO3 system

Yan Guo-Qing Mao Qiang Wang Gui-Ying Guo Huan-Yin Liu Ning

Research on order phase and second-entering-type spin glass behavior of La0.3Ca0.7Mn1-xVxO3 system

Yan Guo-Qing, Mao Qiang, Wang Gui-Ying, Guo Huan-Yin, Liu Ning
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  • Received Date:  11 November 2009
  • Accepted Date:  20 December 2009
  • Published Online:  05 April 2010

Research on order phase and second-entering-type spin glass behavior of La0.3Ca0.7Mn1-xVxO3 system

  • 1. (1)Anhui Key Laboratory of Spin Electron and Nanomaterials (Cultivating Base),Suzhou College,Suzhou 234000,China; (2)College of sciences,Anhui Science and Technology University,Fengyang 233100,China; Anhui Key Laboratory of Spin Electron and Nanomaterials (Cultivating Base),Suzhou College,Suzhou 234000,China

Abstract: The influence of V doping at Mn site on charge order and spin order of La0.3Ca0.7MnO3 system has been studied by the measurement of magnetization-temperature (M-T) curves,resistivity-temperature (ρ-T) curves and electron spin resonance (ESR) spectra of samples La0.3Ca0.7Mn1-xVxO3 (x=0.05,0.10,0.134,0.20).The results show that, when 0.05≤3≤0.134,charge ordering (CO) phase exists in the system,and the spin order of the system exhibits the serial changes of paramagnetism (PM)—charge ordering (CO)—antiferromagnetism (AFM) with the decrease of temperature.When x=0.20,the charge ordering melts,and the system exhibits second-entering-type spin glass behavior.

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