Spiral ground state against ferroelectricity in the frustrated magnet BiMnFe.sub.2./sub.O.sub.6./sub..

0366992 - FZÚ 2012 RIV US eng J - Článek v odborném periodiku
Abakumov, A.M. - Tsirlin, A.A. - Perez-Mato, J. M. - Petříček, Václav - Rosner, H. - Yang, T. - Greenblatt, M.
Spiral ground state against ferroelectricity in the frustrated magnet BiMnFe₂O₆.
Physical Review. B. Roč. 83, č. 21 (2011), "214402-1"-"214402-10". ISSN 1098-0121
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: magnetic structure * superspace approach * band structure calculation
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.691, rok: 2011

The spiral magnetic structure and underlying spin lattice of BiMnFe2O6 are investigated by low-temperature neutron powder diffraction and density functional theory band structure calculations. In spite of the random distribution of the Mn3+ and Fe3+ cations, this centrosymmetric compound undergoes a transition into an incommensurate antiferromagnetically ordered state below TN ~ 220 K.The magnetic structure is characterized by the propagation vector k = [0,β,0] with β~0.14 and the P221211´(0β0)0s0s magnetic superspace symmetry.
Trvalý link: http://hdl.handle.net/11104/0201796