Тип публикации: статья из журнала
Год издания: 2018
Идентификатор DOI: 10.1088/1361-648X/aabdf6
Ключевые слова: magnetic multiferroics, neutron diffraction, polarization analysis
Аннотация: In order to make a new approach to the elucidation of the microscopic mechanisms of multiferroicity in the RMn2O5 family, experiments with different methods of polarized neutrons scattering were performed on a TbMn2O5 single crystal. We employed three different techniques of polarized neutron diffraction without the analysis after Показать полностьюscattering, the XYZ-polarization analysis, and technique of spherical neutron polarimetry (SNP). Measurements with SNP were undertaken both with and without external electric field. A characteristic difference in the population of 'right' and 'left' helix domains in all magnetically ordered phases of TbMn2O5, was observed. This difference can be controlled by an external electric field in the field-cooled mode. The analysis of the results gives an evidence that antisymmetric Dzyaloshinsky-Moria exchange is effective in all the magnetic phases in TbMn2O5.
Журнал: Journal of Physics: Condensed Matter
Выпуск журнала: Т. 30, № 20
Номера страниц: 205804
ISSN журнала: 09538984
Издатель: Institute of Physics and IOP Publishing Limited