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Metastable magnetic behavior in La0.9Tb0.1MnO3

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Abstract

The linear and nonlinear magnetizations of La0.9Tb0.1MnO3 at low temperatures were reported in detail. The temperature dependence of magnetization shows peaks at 50, 100 and 150 K, respectively. When LaMnO3 is Tb-doped, its magnetic structure exhibits a canted antiparallel spin order. This is different from classical antiferromagnetic (AFM) in which the relaxation behavior takes place at about 150 K. At 50 K, Tb-doped LaMnO3 exhibits canonical spin glass behavior, arising from the competition of exchange and super-exchange between spins. The peak at 100 K shows neither spin glass behavior nor canted AFM behavior. Its peak value increases with frequency increasing, and the transition temperature of the peak shifts to higher temperatures with frequency increasing. The study of aging behavior at 100 K shows a periodical variable metastability, which is ascribed to the competition between ferromagnetic (FM)-, AFM- and sinusoidal-order interactions. This work should shed a light on understanding the complex magnetic structure of the perovskite oxides.

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Acknowledgments

This work was financially supported by the Special Program for State Key Laboratory of Electrical Insulation and Power Equipment (No. EIPE11207), the Special Program for State Key Laboratory Breeding Base of Dielectrics Engineering (No. DE2011A01), the Special Program for Education Bureau of Province (No. 12JK0953) and the National Natural Science Foundation of China (No. 51201094).

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Authors and Affiliations

  1. Department of Physics, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China

    Wei-Bin Liu & Zi-Yu Chen

  2. School of Material Science and Engineering, Institute of Functional Material, Shaanxi University of Technology, Hanzhong, 723003, China

    Ying-Tang Zhang & Tao-Tao Ai

  3. Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, China

    Li-Zhu Liu

  4. State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, 710049, China

    Sheng-Tao Li

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  1. Wei-Bin Liu
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Correspondence to Ying-Tang Zhang.

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Liu, WB., Zhang, YT., Chen, ZY. et al. Metastable magnetic behavior in La0.9Tb0.1MnO3 . Rare Met. 36, 596–600 (2017). https://doi.org/10.1007/s12598-015-0476-7

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  • DOI: https://doi.org/10.1007/s12598-015-0476-7

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