Investigation of critical behavior in Pr0.55Sr0.45MnO3 by using the field dependence of magnetic entropy change

One method of calculating critical exponents based on the field dependence on magnetic entropy change was applied to study critical behavior in Pr0.55Sr0.45MnO3. By using the obtained critical exponents, the modified Arrott plot [A. Arrott and J. E. Noakes, Phys. Rev. Lett. 19, 786 (1967)] is consis...

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Published inApplied physics letters Vol. 98; no. 7
Main Authors Fan, Jiyu, Pi, Li, Zhang, Lei, Tong, Wei, Ling, Langsheng, Hong, Bo, Shi, Yangguang, Zhang, Weichun, Lu, Di, Zhang, Yuheng
Format Journal Article
LanguageEnglish
Japanese
Published 14.02.2011
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Summary:One method of calculating critical exponents based on the field dependence on magnetic entropy change was applied to study critical behavior in Pr0.55Sr0.45MnO3. By using the obtained critical exponents, the modified Arrott plot [A. Arrott and J. E. Noakes, Phys. Rev. Lett. 19, 786 (1967)] is consistent with that by using conventional method. The calculated critical exponents not only obey the scaling theory, but also inosculate the deduced results from the Kouvel–Fisher method [J. S. Kouvel and M. E. Fisher, Phys. Rev. 136, A1626 (1964)]. It eliminates the drawback due to utilization of multistep nonlinear fitting in a conventional manner. Therefore, this means can be applied to investigate critical behavior.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3554390