PHASE FORMATION IN THE Mg 3 –    n  Ni  n  BPO 7  SYSTEM

M. N. Smirnova; Смирнова М. Н.; M. A. Kop’eva; Копьева М. А.; G. D. Nipan; Нипан Г. Д.; G. E. Nikiforova; Никифорова Г. Е.; A. D. Yapryntsev; Япрынцев А. Д.; A. A. Arkhipenko; Архипенко А. А.

doi:10.31857/S268695352260057X

PHASE FORMATION IN THE Mg_3 – _nNi_nBPO₇ SYSTEM

Authors: Smirnova M.N.¹, Kop’eva M.A.¹, Nipan G.D.¹, Nikiforova G.E.¹, Yapryntsev A.D.¹, Arkhipenko A.A.¹
Affiliations:
1. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences
Issue: Vol 512, No 1 (2023)
Pages: 95-100
Section: CHEMISTRY
URL: https://journals.rcsi.science/2686-9535/article/view/247187
DOI: https://doi.org/10.31857/S268695352260057X
EDN: https://elibrary.ru/HPDYLH
ID: 247187

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Abstract
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Abstract

Samples of Mg_3 – _nNi_nBPO₇ (n = 0–3), synthesized by gel combustion followed by annealing at 980°C and cooled in the inertial-thermal mode, were studied by X‑ray powder diffraction, infrared spectroscopy, and X-ray fluorescence spectrometry. For the first time, the crystalline phase of Ni₃BPO₇ with the β-Zn₃BPO₇ structure has been experimentally obtained. When the composition of the samples changed from Mg₃BPO₇ to Ni₃BPO₇, a region of coexistence of α‑Mg₃BPO₇ and β-Ni₃BPO₇ phases was found. An analysis of the diffuse reflectance spectra of the Mg_1.5Ni_1.5BPO₇ sample showed the presence of Ni²⁺ cations in an arrangement not symmetric octahedral or tetrahedral.

Keywords

multicomponent oxide systems, phase states

References

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