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Investigation of magnetic response of charge ordering in half-doped La0.5Ca0.5MnO3 manganite

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Abstract

La0.5Ca0.5MnO3 (LCMO) polycrystalline sample was synthesized by the solid-state reaction method. The result of X-ray diffraction shows that the LCMO is single phase. We have studied the magnetic response of charge-ordered (CO) state in the LCMO manganite. The magnetic hysteresis loop at 100 K displays an interesting butterfly-type structure, which indicates the existence of CO anti-ferromagnetic (AFM) structure in LCMO. The temperature-dependent magnetization measurements show a paramagnetic (PM) to ferromagnetic (FM) transition at Curie temperature (TC ≈ 130 K) and a FM to AFM transition at Néel temperature (TN ≈ 50 K), measured under different fields of 100, 500 and 5000 Oe. Moreover, there is an interesting intercross in zero-field cooling (ZFC) and filed-cooling (FC) measurements, i.e., an intercross of the ZFC/FC curves in the CO LCMO manganite. These present magnetism measurements are discussed and possible explanations are provided by the existence of CO AFM state.

Notes

Acknowledgements

We would like to thank the colleagues at the Beijing Synchrotron Radiation Facility (BSRF) and Shanghai Synchrotron Radiation Facility (SSRF) for support. This work has been supported by the Science and Technology Project of Zhejiang Province (Grant No. 2018C37080) and the National Natural Science Foundation of China (Grant Nos. 11604067, U1332106, 11574066, 51601049, 11704091).

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Institute of Materials PhysicsHangzhou Dianzi UniversityHangzhouChina
  2. 2.All-Solid-State Energy Storage Materials and Devices Key Laboratory of Hunan Province, College of Information and Electronic EngineeringHunan City UniversityYiyangChina
  3. 3.Key Laboratory of Soft Chemistry and Functional Materials, Ministry of Education, Department of Applied PhysicsNanjing University of Science and TechnologyNanjingChina

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