Effect of Fe-substitution on the structure and magnetism of single crystals Mn2-xFexBO4

Тип публикации: статья из журнала

Год издания: 2017

Идентификатор DOI: 10.1016/j.jcrysgro.2017.06.026

Ключевые слова: A1. Crystal structure, A1. Low dimensional structures, A2. Single crystal growth, B1. Borates, B2. Magnetic materials

Аннотация: Single crystalline Mn2-xFexBO4 with x = 0.3, 0.5, 0.7 grown by the flux method have been studied by means of X-ray diffraction and X-ray absorption spectroscopy at both Mn and Fe K edges. The compounds were found to crystallize in an orthorhombic warwickite structure (sp. gr. Pnam). The lattice parameters change linearly with x thus obeying the Vegard's law. The Fe3+ substitution for Mn3+ has been deduced from the X-ray absorption near-edge structure (XANES) spectra. Two energy positions of the absorption edges have been observed in Mn K-edge XANES spectra indicating the presence of manganese in two different oxidation states. Extended X-ray absorption fine structure (EXAFS) analysis has shown the reduction of local structural distortions upon Fe substitution. The magnetization data have revealed a spin-glass transition at TSG = 11, 14 and 18 K for x = 0.3, 0.5 and 0.7, respectively.

Ссылки на полный текст

Издание

Журнал: Journal of Crystal Growth

Выпуск журнала: Т.475, №

Номера страниц: 239-246

ISSN журнала: 00220248

Издатель: Elsevier Science Publishing Company, Inc.

Авторы

  • Platunov M.S. (ESRF-The European Synchrotron)
  • Kazak N.V. (Kirensky Institute of Physics,Federal Research Center KSC SB RAS)
  • Knyazev Y.V. (Kirensky Institute of Physics,Federal Research Center KSC SB RAS)
  • Bezmaternykh L.N. (Kirensky Institute of Physics,Federal Research Center KSC SB RAS)
  • Moshkina E.M. (Kirensky Institute of Physics,Federal Research Center KSC SB RAS)
  • Velikanov D.A. (Kirensky Institute of Physics,Federal Research Center KSC SB RAS)
  • Ovchinnikov S.G. (Kirensky Institute of Physics,Federal Research Center KSC SB RAS)
  • Trigub A.L. (National Research Centre “Kurchatov Institute”)
  • Veligzhanin A.A. (National Research Centre “Kurchatov Institute”)
  • Zubavichus Y.V. (National Research Centre “Kurchatov Institute”)
  • Solovyov L.A. (Institute of Chemistry and Chemical Technology,Federal Research Center KSC SB RAS)

Вхождение в базы данных

Информация о публикациях загружается с сайта службы поддержки публикационной активности СФУ. Сообщите, если заметили неточности.

Вы можете отметить интересные фрагменты текста, которые будут доступны по уникальной ссылке в адресной строке браузера.