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An investigation on magnetism, spin–phonon coupling, and ferroelectricity in multiferroic GdMn2O5

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Abstract

The magnetization, Raman spectroscopy, and ferroelectricity of multiferroic GdMn2O5 as a function of temperature and magnetic field are investigated. The complicated magnetic transitions at low temperatures are featured with anomalous Raman mode shifts, dielectric response, and ferroelectricity generation, indicating the significant spin–phonon coupling. It is argued that this coupling is possibly responsible for the electrical polarization generation associated with the incommensurate–commensurate transition.

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Authors and Affiliations

  1. Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing, 210093, China

    C. L. Lu, J. Fan, H. M. Liu, K. Xia, K. F. Wang & J.-M. Liu

  2. Electron Microscopy Laboratory, Peking University, Beijing, 100871, China

    P. W. Wang & D. P. Yu

  3. School of Physics, South China Normal University, Guangzhou, 51006, China

    Q. Y. He & J.-M. Liu

  4. International Center for Materials Physics, Chinese Academy of Sciences, Shenyang, China

    J.-M. Liu

Authors
  1. C. L. Lu
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  2. J. Fan
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  3. H. M. Liu
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  4. K. Xia
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  5. K. F. Wang
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  6. P. W. Wang
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  7. Q. Y. He
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  8. D. P. Yu
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  9. J.-M. Liu
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Correspondence to J.-M. Liu.

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Lu, C.L., Fan, J., Liu, H.M. et al. An investigation on magnetism, spin–phonon coupling, and ferroelectricity in multiferroic GdMn2O5 . Appl. Phys. A 96, 991–996 (2009). https://doi.org/10.1007/s00339-009-5133-2

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  • DOI: https://doi.org/10.1007/s00339-009-5133-2

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