Microscopic magnetic and structural nature of spinel Li [Lix Mn2-x] O4

J. Sugiyama, K. Mukai, Y. Ikedo, P. L. Russo, T. Suzuki, I. Watanabe, J. H. Brewer, E. J. Ansaldo, K. H. Chow, K. Ariyoshi, T. Ohzuku

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Abstract

The magnetic nature of the spinel antiferromagnet Li [Lix Mn2-x] O4 with x=0-0.15 has been studied with muon-spin rotation and relaxation (μ+ SR) spectroscopy. Both weak-transverse-field and zero-field μ+ SR measurements indicate that the whole sample enters into a static disordered magnetic phase below TN for all the samples measured; TN =61 K for LiMn2 O4, but 27-23 K for the x=0.05-0.15 samples. It was also clarified that both the field distribution width and the field fluctuation rate show a clear change at the Jahn-Teller (JT) transition temperature (TJT =280 K) for LiMn2 O4, and a short-range cooperative JT distortion appears below 280 K even for Li [Li0.15 Mn1.85] O4.

Original languageEnglish
Article number174424
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume75
Issue number17
DOIs
Publication statusPublished - 2007 May 17

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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    Sugiyama, J., Mukai, K., Ikedo, Y., Russo, P. L., Suzuki, T., Watanabe, I., Brewer, J. H., Ansaldo, E. J., Chow, K. H., Ariyoshi, K., & Ohzuku, T. (2007). Microscopic magnetic and structural nature of spinel Li [Lix Mn2-x] O4. Physical Review B - Condensed Matter and Materials Physics, 75(17), [174424]. https://doi.org/10.1103/PhysRevB.75.174424