Preparation of new apatite-type oxynitrides PrxSi3O(3x-3y+12)/2Ny (x=4.4 to 4.8 and y=0.8 to 1.1) in sealed silica tubes

被引：1

作者：

Kawahara, Toshiki ^{[1
]}

Murata, Tomoharu ^{[1
]}

Tokuhara, Yoshimi ^{[1
]}

Tezuka, Keitaro ^{[1
]}

Shan, Yue Jin ^{[1
]}

机构：

[1] Utsunomiya Univ, Grad Sch Engn, Dept Mat & Environm Chem, 7-1-2 Yoto, Utsunomiya, Tochigi 3218585, Japan

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2020年 / 288卷 / 288期

关键词：

CRYSTAL-STRUCTURE; ENERGY-TRANSFER; 3-DIMENSIONAL VISUALIZATION; OXONITRIDOSILICATE OXIDE; LUMINESCENCE PROPERTIES; TEMPERATURE SYNTHESIS; PHYSICAL-PROPERTIES; MAGNETIC-PROPERTIES; SOLID-SOLUTION; J-PHASES;

D O I：

10.1016/j.jssc.2020.121406

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Metal oxynitrides PrxSi3O(3x-3y+12)/2Ny were synthesized by reacting Pr6O11, Si3N4, and SiO2 at 1200 degrees C for 10 h in evacuated silica tubes. Phase-pure PrxSi3O(3x-3y+12)/2Ny were obtained in the range of x = 4.4 to 4.8 and y = 0.8 to 1.1. The powder X-ray diffraction (XRD) pattern of Pr4.8(III) Si3O11.7N can be indexed as a hexagonal structure, and the Rietveld refinement indicated that this compound belonged to a space group P6(3)/m (No. 176) with lattice constants a = 9.597(2) angstrom and c = 7.126(1) angstrom. The oxidation number of praseodymium and the quantitative analysis of oxygen and nitrogen in Pr4.8Si3O11.7N were determined by X-ray absorption near edge structure (XANES) and oxygen/nitrogen combustion analyzer. While the lattice constant a was almost constant with an increase in both x and y, the lattice constant c became larger.

引用

页数：8

共 19 条

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Kawahara, Toshiki
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JOURNAL OF SOLID STATE CHEMISTRY, 2020, 289 (289)
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