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

共 13 条

[1] Thermal and electrical properties of gadolinium sulfides at high temperatures [J].

Gadzhiev, GG ;

Ismailov, SM ;

Abdullaev, KK ;

Khamidov, MM ;

Omarov, ZM .

HIGH TEMPERATURE, 2001, 39 (03) :407-412

[2] Thermophysical properties of sulfides of lanthanum, praseodymium, gadolinium, and dysprosium [J].

Gadzhiev, GG ;

Ismailov, SM ;

Khamidov, MM ;

Abdullaev, KK ;

Sokolov, VV .

HIGH TEMPERATURE, 2000, 38 (06) :875-879

[3] Thermoelectric properties of SmSx (x=0.8-1.5) [J].

Golubkov, AV ;

Kazanin, MM ;

Kaminskii, VV ;

Sokolov, VV ;

Solov'ev, SM ;

Trushnikova, LN .

INORGANIC MATERIALS, 2003, 39 (12) :1251-1256

[4] Effect of substitution of La by alkaline earth metal on the thermoelectric properties and the phase stability of gamma-La3S4 [J].

Katsuyama, S ;

Tanaka, Y ;

Hashimoto, H ;

Majima, K ;

Nagai, H .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (11) :5513-5519

[5]

Kortum G, 1957, Z NATURFORSCH A, V11A, P1018

[6] THERMOELECTRIC PROPERTIES OF LANTHANUM SULFIDE WITH SM, EU, AND YB ADDITIVES [J].

NAKAHARA, JF ;

TAKESHITA, T ;

TSCHETTER, MJ ;

BEAUDRY, BJ ;

GSCHNEIDNER, KA .

JOURNAL OF APPLIED PHYSICS, 1988, 63 (07) :2331-2336

[7] Effect of non-stoichiometry on thermoelectric properties of γ-Tb2S3-x [J].

Ohta, Michihiro ;

Hirai, Shinji ;

Mori, Takao ;

Yajima, Yoshiyuki ;

Nishimura, Toshiyuki ;

Shimakage, Kazuyoshi .

JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 418 (1-2) :209-212

[8] THERMOELECTRIC PROPERTIES OF SOME CERIUM SULFIDE SEMICONDUCTORS FROM 4 DEGREES TO 1300 DEGREES K [J].

RYAN, FM ;

CARTER, FL ;

GREENBERG, IN ;

MILLER, RC .

JOURNAL OF APPLIED PHYSICS, 1962, 33 (03) :864-&

[9] REVISED EFFECTIVE IONIC-RADII AND SYSTEMATIC STUDIES OF INTERATOMIC DISTANCES IN HALIDES AND CHALCOGENIDES [J].

SHANNON, RD .

ACTA CRYSTALLOGRAPHICA SECTION A, 1976, 32 (SEP1) :751-767

[10] THERMOELECTRIC EFFICIENCY OF RARE-EARTH SESQUISULFIDES [J].

TAHER, SM ;

GRUBER, JB .

MATERIALS RESEARCH BULLETIN, 1981, 16 (11) :1407-1412

← 1 2 →