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Chinese Physics, 2005, Vol. 14(5): 1051-1054    DOI: 10.1088/1009-1963/14/5/035
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

Preisach analysis of (La0.2Nd0.8)0.67Pb0.33MnO3

Cao Xian-Sheng (曹先胜)a, Xiao Chun-Tao (肖春涛)b, Gywn Williamsc, Roy Roshkoc
a Material department,The second northwest university for nationalities, Ningxia 750021, China; b Physics Department, Lanzhou University, Lanzhou 730000,  China; c Department of Physics and Astronomy, University of Manitoba, R3T 2N2, Canada
Abstract  The perovskite (La0.2Nd0.8)0.67Pb0.33MnO3 (LNPMO) with a Curie temperature TC=220K has been characterized by measuring the zero field cooled (ZFC) and field cooled (FC) moments over wide range of temperature 2K < < 290K in an applied field of H= 3978.87 A/m, and also by the major hysteresis loop over the field range Ha $\leq$1061kA/m at T=10K. The data analysed within the framework of a generalized Preisach model, which includes thermal fluctuations, critical effects, and a temperature-dependent distribution of free energy barriers. The analysis shows that the response function of LNPMO is dominated by the growth of the anisotropy barriers.
Keywords:  Preisach model      hysteresis loop      magnetization  
Received:  25 November 2004      Revised:  21 December 2004      Accepted manuscript online: 
PACS:  7540M  
  7530C  
  7460E  
  7500  

Cite this article: 

Cao Xian-Sheng (曹先胜), Xiao Chun-Tao (肖春涛), Gywn Williams, Roy Roshko Preisach analysis of (La0.2Nd0.8)0.67Pb0.33MnO3 2005 Chinese Physics 14 1051

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