Formation of pancakelike ising domains and giant magnetic coercivity in ferrimagnetic LuFe2O4

Weida Wu, V. Kiryukhin, H. J. Noh, K. T. Ko, J. H. Park, W. Ratcliff, P. A. Sharma, N. Harrison, Y. J. Choi, Y. Horibe, S. Lee, S. Park, H. T. Yi, C. L. Zhang, S. W. Cheong

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Abstract

We have studied quasi-two-dimensional multiferroic LuFe2O4 with strong charge-spin-lattice coupling, in which low-temperature coercivity approaches an extraordinary value of 9T in single crystals. The enhancement of the coercivity is connected to the collective freezing of nanoscale pancakelike ferrimagnetic domains with large uniaxial magnetic anisotropy ("Ising pancakes"). Our results suggest that collective freezing in low-dimensional magnets with large uniaxial anisotropy provides an effective mechanism to achieve enhanced coercivity. This observation may help identify novel approaches for synthesis of magnets with enhanced properties.

Original languageEnglish
Article number137203
JournalPhysical review letters
Volume101
Issue number13
DOIs
Publication statusPublished - 2008 Sep 24

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Wu, W., Kiryukhin, V., Noh, H. J., Ko, K. T., Park, J. H., Ratcliff, W., Sharma, P. A., Harrison, N., Choi, Y. J., Horibe, Y., Lee, S., Park, S., Yi, H. T., Zhang, C. L., & Cheong, S. W. (2008). Formation of pancakelike ising domains and giant magnetic coercivity in ferrimagnetic LuFe2O4. Physical review letters, 101(13), [137203]. https://doi.org/10.1103/PhysRevLett.101.137203