Crystal and local atomic structure of MgFeBO4, Mg0.5Co0.5FeBO4 and CoFeBO4: Effects of Co substitution

Описание

Тип публикации: статья из журнала

Год издания: 2015

Идентификатор DOI: 10.1002/pssb.201552143

Ключевые слова: crystal structure, XANES, EXAFS, magnetic semiconductor, oxyborate, Crystal structure, Magnetic semiconductor, Oxyborate, XANES/EXAFS

Аннотация: Single-crystalline MgFeBO4, Mg0.5Co0.5FeBO4, and CoFeBO4 have been grown by the flux method. The samples have been characterized by X-ray spectral analysis, X-ray diffraction, and X-ray absorption spectroscopy. The X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra have been meПоказать полностьюasured at the Fe and Co K-edges over a wide temperature range (6.5-300K). The composition, the charge state, and local environment of both Fe and Co atoms have been determined. The effects of Co substitution for Mg on the local structural distortions have been revealed experimentally and the MO bond anisotropy has been found.

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Издание

Журнал: PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS

Выпуск журнала: Vol. 252, Is. 10

Номера страниц: 2245-2258

ISSN журнала: 03701972

Место издания: WEINHEIM

Издатель: WILEY-V C H VERLAG GMBH

Авторы

  • Kazak N.V. (Kirensky Institute of Physics)
  • Veligzhanin A.A. (National Research Center Kurchatov Institute)
  • Arauzo A. (Servicio de Medidas Fi, sicas, Universidad de Zaragoza)
  • Bartolome J. (Departamento de Fisica de la Materia Condensada, Instituto de Ciencia de Materiales de Aragon, CSIC, Universidad de Zaragoza)
  • Lamonova K.V. (O. O. Galkin Institute for Physics and Engineering, National Academy of Sciences of Ukraine)
  • Platunov M.S. (Kirensky Institute of Physics)
  • Vasiliev A.D. (Siberian Federal University)
  • Bezmaternykh L.N. (Kirensky Institute of Physics)
  • Bayukov O.A. (Kirensky Institute of Physics)
  • Ovchinnikov S.G. (Siberian Federal University)
  • Knyazev Y.V. (Siberian Federal University)
  • Ivanova N.B. (Siberian Federal University)
  • Zubavichus Y.V. (National Research Center Kurchatov Institute)

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