Helical screw type magnetic structure of the multiferroic CaMn.sub.7./sub.O.sub.12./sub. with low Cu-doping

0379240 - FZÚ 2013 RIV DK eng J - Journal Article
Slawinski, W. - Przenioslo, R. - Sosnowska, I. - Petříček, Václav
Helical screw type magnetic structure of the multiferroic CaMn₇O₁₂ with low Cu-doping.
Acta Crystallographica Section B-Structural Science. Roč. 68, č. 3 (2012), s. 240-249. ISSN 0108-7681
Grant - others:AV ČR(CZ) AP0701
Program: Akademická prémie - Praemium Academiae
Institutional research plan: CEZ:AV0Z10100521
Keywords : magnetic modulated structure * powder neutron scattering * structural refinement
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.175, year: 2012

The modulated crystal structure and modulated magnetic ordering of the multiferroic CaCuxMn7-xO12 is studied by analysing neutron and synchrotron-radiation (SR) powder diffraction data with a model based on the magnetic superspace group R31'(00γ )ts. Both atomic position modulations and magnetic modulations are described with the modulation vector (0,0,q). The magnetic ordering is a screw-type circular helix where the magnetic moments are perpendicular to the c direction.
Permanent Link: http://hdl.handle.net/11104/0210495