掺杂铁和镁对铋钽酸盐高温稳定性和理化性质的影响

IF 0.8 4区物理与天体物理 Q4 OPTICS

Optics and Spectroscopy Pub Date : 2024-08-07 DOI:10.1134/S0030400X24020140

S. V. Nekipelov, N. A. Zhuk, M. G. Krzhizhanovskaya, V. N. Sivkov

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引用次数: 0

摘要

摘要获得了掺杂铁原子和镁原子的铋钽热裂解物，其热稳定性可达 1140°C：Bi2MgxFe1-xTa2O9.5-Δ（x = 0-1）。研究了铁和镁共掺对其晶体结构的影响。固溶体的单胞参数从 10.4871 (2) Å (x = 0) 均匀地增加到 10.54607 Å (x = 1)。根据 XPS 和 NEXAFS 光谱数据，发现这些固溶体中的离子处于 Bi(+3)、Mg(+2)、Fe(+3)、Ta(+5 - δ) 电荷态。掺杂原子铁和镁被引入到钽原子的位置，而不会扭曲晶格的对称性。

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Effect of Doping with Iron and Magnesium on High-Temperature Stability and Physicochemical Properties of Bismuth Tanalates

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Effect of Doping with Iron and Magnesium on High-Temperature Stability and Physicochemical Properties of Bismuth Tanalates

Bismuth tantalum pyrochlores doped with iron and magnesium atoms were obtained thermally stable up to a temperature of 1140°C: Bi₂Mg_xFe_{1 –} _xTa₂O_{9.5 – Δ} (x = 0–1). The effect of Fe and Mg codoping on their crystal structure has been studied. The unit cell parameter of solid solutions increases uniformly from 10.4871 (2) Å (x = 0) to 10.54607 Å (x = 1). According to the XPS and NEXAFS spectroscopy data, it was found that the ions in these solid solutions are in the charge states Bi(+3), Mg(+2), Fe(+3), Ta(+5 – δ). The dopant atoms iron and magnesium are introduced into the positions of the tantalum atom without distorting the symmetry of the crystal lattice.

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来源期刊

Optics and Spectroscopy 物理-光谱学

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

4.5 months

期刊介绍： Optics and Spectroscopy (Optika i spektroskopiya), founded in 1956, presents original and review papers in various fields of modern optics and spectroscopy in the entire wavelength range from radio waves to X-rays. Topics covered include problems of theoretical and experimental spectroscopy of atoms, molecules, and condensed state, lasers and the interaction of laser radiation with matter, physical and geometrical optics, holography, and physical principles of optical instrument making.