Abstract
We have performed a measurement of optical absorption in multiferroic in high magnetic fields. This material undergoes magnetic-field-induced successive phase transitions at low temperatures. The spectrum of the optical absorption originating from spin-forbidden excitations at ions was found to change with the phase transitions. The observed magnetochromism suggests that the magnetic moments align approximately along the axis in the high-field (HF) paraelectric phase above 12 T.
- Received 5 August 2014
- Revised 8 January 2015
DOI:https://doi.org/10.1103/PhysRevB.91.054417
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