Crystal and local atomic structure of Co-doped MgFeBO_4 warwickites

N. V. Kazak; M. S. Platunov; Yu. V. Knyazev; N. B. Ivanova; Y. V. Zubavichus; A. A. Veligzhanin; A. D. Vasiliev; L. N. Bezmaternykh; O. A. Bayukov; A. Arauzo; J. Bartolomé; K. V. Lamonova; S. G. Ovchinnikov

doi:10.1002/pssb.201552143

Crystal and local atomic structure of Co-doped MgFeBO_4 warwickites

Materials Science 2018-11-28 v2

Authors: N. V. Kazak , M. S. Platunov , Yu. V. Knyazev , N. B. Ivanova , Y. V. Zubavichus , A. A. Veligzhanin , A. D. Vasiliev , L. N. Bezmaternykh , O. A. Bayukov , A. Arauzo , J. Bartolomé , K. V. Lamonova , S. G. Ovchinnikov

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Single crystalline MgFeBO_4, Mg_0.5Co_0.5FeBO_4 and CoFeBO_4 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 measured at the Fe andCoK-edges over a wide temperature range (6.5 - 300 K). The composition, the charge state and local environment of both Fe and Co atoms have been determined. The effects of Mg substitution by Co on the local structural distortions have been revealed experimentally and the M-O bond anisotropy has been found.

Keywords

warwickite crystal structure local atomic structure X-ray absorption spectroscopy Co-doped MgFeBO4

Cite

@article{arxiv.1412.6236,
  title  = {Crystal and local atomic structure of Co-doped MgFeBO_4 warwickites},
  author = {N. V. Kazak and M. S. Platunov and Yu. V. Knyazev and N. B. Ivanova and Y. V. Zubavichus and A. A. Veligzhanin and A. D. Vasiliev and L. N. Bezmaternykh and O. A. Bayukov and A. Arauzo and J. Bartolomé and K. V. Lamonova and S. G. Ovchinnikov},
  journal= {arXiv preprint arXiv:1412.6236},
  year   = {2018}
}

Comments

21 pages, 11 figures, 4 tables

Crystal and local atomic structure of Co-doped MgFeBO_4 warwickites

Abstract

Keywords

Cite

Comments

Related papers