Interplay among spin, orbital, and lattice degrees of freedom in a frustrated spinel Mn3O4

Y. Nii, H. Sagayama, H. Umetsu, N. Abe, K. Taniguchi, T. Arima

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

We have investigated magnetic-field (Hâ̂¥[100]) effect on a spin-frustrated tetragonally distorted spinel Mn3O4 by measurements of magnetization, dielectric constant, and strain as well as synchrotron x-ray and neutron diffraction. In two low-temperature phases below 40 K, long-wavelength lattice modulations coupled with magnetic order have been confirmed, revealing spin-lattice coupling caused by the exchange striction in the geometrically frustrated Mn3+ spin moments on the distorted pyrochlore lattice. A magnetic-field-induced phase transition has been found at low temperatures, which involves an abrupt change in both structural and magnetic configurations. The magnetostructural phase transition by the application of a magnetic field Hâ̂¥[100] is discussed in terms of interplay among spin, orbital, and lattice degrees of freedom.

Original languageEnglish
Article number195115
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume87
Issue number19
DOIs
Publication statusPublished - 2013 May 13

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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