Magnetic-field-induced color change in α-Fe 2O 3 single crystals

P. Chen, N. Lee, S. McGill, S. W. Cheong, J. L. Musfeldt

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

We investigated the magneto-optical properties of α-Fe 2O 3 in order to understand the interplay between charge and magnetism in a model transition metal oxide. We discovered that hematite appears more red in applied magnetic field than in zero-field conditions, an effect that is amplified by the presence of the spin-flop transition. Analysis of the exciton pattern on the edge of the d-d color band reveals C2 monoclinic symmetry in the high-field phase. These findings advance our understanding of magnetoelectric coupling away from the static limit and motivate spectroscopic work on other iron-based materials under extreme conditions.

Original languageEnglish (US)
Article number174413
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number17
DOIs
StatePublished - May 10 2012

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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