Synthesis and Eu luminescence in new oxysilicates, ALa3Bi(SiO4)3O and ALa2Bi2(SiO4)3O [ACa, Sr and Ba] with apatite-related structure期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

按检索

Synthesis and Eu luminescence in new oxysilicates, ALa₃Bi(SiO₄)₃O and ALa₂Bi₂(SiO₄)₃O [ACa, Sr and Ba] with apatite-related structure

Authors:	N Lakshminarasimhan

Institution:	Materials Science Research Centre and Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India

Abstract:	New oxysilicates with the general formula ALa₃Bi(SiO₄)₃O and ALa₂Bi₂(SiO₄)₃O ACa, Sr and Ba] are synthesized and characterized. Powder X-ray diffraction of these silicates show that they are isostructural with BiCa₄(VO₄)₃O which has an apatite-related structure. Eu³⁺ luminescence in the newly synthesized oxysilicates show broad emission lines due to disorder of cations. The relatively high intense magnetic dipole transition ⁵D₀→⁷F₁ points to a more symmetric environment. The photoluminescence results confirm that the compounds have apatite-related crystal structure.

Keywords:	Apatite Silicate Bi³⁺ Powder X-ray diffraction IR spectroscopy Photoluminescence Eu³⁺
本文献已被 ScienceDirect 等数据库收录！