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Effect of A-site cation substitution on magnetic transition temperature of (LaCa) MnO3

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Abstract

The ferromagnetic transition temperatures have been measured on two bathes of perovskite manganese oxides such as (La1-x R x )2/3Ca1/3MnO3(R=Ce, Pr, Nd, etc.) and La2/3(Ca1-y Cd y )1/3MnO3. It is found that the (La1-x R x )2/3Ca1/3MnO3 samples have obviously different Curie temperatureT C although their (rA) (the average A-site cation radius) are almost identical, and theT C in the system of (La1-x R x )2/3Ca1/3MnO3(R=Ce, Pr, Nd, etc.) and La2/3(Ca1-y Cd y )1/3MnO3. It is found that the (La1-x R x )2/3Ca1/3MnO3 compounds increases with increasingy although (rA) decreases slightly. It is suggested that the Curie temperature should be influenced by the average local A-site magnetic moment in the ferromagnetic perovskite manganite system.

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Authors and Affiliations

  1. Institute of Solid State Physics, Chinese Academy of Sciences, 230031, Hefei, China

    Li Kebin, Wang Shouguo, Cheng Rongsheng, Li Xijun & Zhang Yuheng

  2. Structural Research Laboratory, University of Science and Technology of China, 230026, Hefei, China

    Li Kebin, Wang Shouguo & Zhang Yuheng

  3. Department of Physics, Hebei Teacher’s College, 050016, Shijiazhuang, China

    Hou Denglu & Nie Xiangfu

Authors
  1. Li Kebin
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  2. Wang Shouguo
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  3. Cheng Rongsheng
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  4. Li Xijun
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  5. Hou Denglu
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  6. Nie Xiangfu
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  7. Zhang Yuheng
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Project supported by the National Natural Science Foundation of China (Grant No. 19504012) and the Chinese Academy of Sciences.

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Li, K., Wang, S., Cheng, R. et al. Effect of A-site cation substitution on magnetic transition temperature of (LaCa) MnO3 . Sci. China Ser. A-Math. 42, 758–762 (1999). https://doi.org/10.1007/BF02878995

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  • DOI: https://doi.org/10.1007/BF02878995

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