Journal
PHYSICAL REVIEW B
Volume 85, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.224412
Keywords
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Funding
- Russian Foundation for Basic Research [11-02-90428 Ucr_f_a, 12-08-00887_a]
- Office of Naval Research [N00014-08-1-0915, N00014-11-1-0384]
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Magnetic properties of magnetoelectric PbFe1/2Nb1/2O3 (PFN) have been studied with the help of Mossbauer spectroscopy. In contrast to the belief that Nb and Fe are randomly distributed in the lattice, we found that the Fe ions occupy two crystallographic positions, which differ by the quadrupole splitting and magnetic field mirroring the difference in the nearest neighbor environment of the Fe ions. The ratio of the weights of these positions is 2.3, at 14 K. First-principles calculations provide a microscopic insight of this finding.
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