Preparation of Ln3-x Eu x S4 (Ln=Ce, Pr, and Nd) ceramics by pressureless sintering

被引：2

作者：

Yuan HaiBin ^{[1
,2
]}

Zhang JianHui ^{[1
]}

Yu RuiJin ^{[1
]}

Su Qiang ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, State Key Lab Optoelect Mat & Technol, MOE Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China

[2] Henan Polytech Univ, Inst Mat Sci & Engn, Jiaozuo 454000, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2009年 / 54卷 / 15期

关键词：

ternary rare earth sulfides; carbon disulfide; Eu substitution; ceramics; pressureless sintering; THERMOELECTRIC PROPERTIES; LANTHANUM SULFIDE; GADOLINIUM;

D O I：

10.1007/s11434-009-0132-4

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The preparation of ternary rare earth sulfides of Ln(3-x) Eu (x) S-4 (Ln = Ce, Pr, and Nd) ceramics was investigated, and the effect of Eu substitution on Ln(3-x) Eu (x) S-4 ceramics was also studied. Ln(3-x) Eu (x) S-4 powders were synthesized by the sulfurization of their oxide powders using carbon disulfide gas. Ln(3-x) Eu (x) S-4 ceramics were sintered by pressure-less sintering method. All pressureless sintered Ln(3-x) Eu (x) S-4 ceramics crystallized in gamma-phase. It was found that Eu substitution could improve the density of Ln(3-x) Eu (x) S-4 ceramics. Furthermore, Eu substitution might narrow the optical band gaps of Ln(3-x) Eu (x) S-4 ceramics.

引用

页码：2694 / 2697

页数：4

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