Pressure and field tuning the magnetostructural phases of Mn 3O4: Raman scattering and x-ray diffraction studies

M. Kim, X. M. Chen, X. Wang, C. S. Nelson, R. Budakian, P. Abbamonte, S. L. Cooper

Research output: Contribution to journalArticlepeer-review

Abstract

We present temperature-magnetic-field-and pressure-dependent Raman scattering studies of single crystal Mn3O4, combined with temperature- and field-dependent x-ray diffraction studies, revealing the novel magnetostructural phases in Mn3O4. Our temperature-dependent studies show that the commensurate magnetic transition at T2=33 K in the binary spinel Mn3O4 is associated with a structural transition from tetragonal to orthorhombic structures. Field-dependent studies show that the onset and nature of this structural transition can be controlled with an applied magnetic field, and reveal evidence for a field-tuned quantum phase transition to a tetragonal spin-disordered phase for H[11̄0]. Pressure-dependent Raman measurements indicate that the magnetic easy-axis direction in Mn3O4 can be controlled-and the ferrimagnetic transition temperature increased-with applied pressure. Finally, combined pressure- and magnetic-field-tuned Raman measurements reveal a rich magnetostructural phase diagram-including a pressure- and field-induced magnetically frustrated tetragonal phase in the P-H (pressure-magnetic field) phase diagram-that can be generated in Mn 3O4 with applied pressure and magnetic field.

Original languageEnglish (US)
Article number174424
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number17
DOIs
StatePublished - Nov 18 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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