Journal
PHYSICAL REVIEW B
Volume 82, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.82.014401
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Funding
- RFBR [09-02-00311-a]
- Russian Federation [696.2010.2, 02.740.11.0542]
- LLB
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The crystal and magnetic structures of BiMnO3 were studied at high pressures up to 10 GPa by means of neutron diffraction in the temperature range 2-300 K. Three structural modifications, two monoclinic and one orthorhombic were found to exist in the pressure range studied and their structural parameters were determined. A suppression of the initial ferromagnetic state and formation of a new antiferromagnetic state with a propagation vector (1/2 1/2 1/2) was observed at P similar to 1 GPa, accompanied with the monoclinic-monoclinic structural transformation. Possible mechanisms of the pressure-induced magnetic transition and origin of magnetoelectric phenomena in BiMnO3 are discussed.
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