Synthesis, microstructure, and electrical properties of the delafossite compound CuGaO2

被引：33

作者：

Gall, RB ^{[1
]}

Ashmore, N ^{[1
]}

Marquardt, MA ^{[1
]}

Tan, XL ^{[1
]}

Cann, DP ^{[1
]}

机构：

[1] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 391卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

semiconductors; electronic transport; electrode materials; scanning and transmission electron microscopy; X-ray diffraction;

D O I：

10.1016/j.jallcom.2004.08.070

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electrical properties and microstructural characteristics of solid-state synthesized CuGaO2 ceramics were investigated. Undoped CuGaO2 ceramics exhibited p-type conductivity with a Seebeck coefficient of 780 mu V/K and a room temperature conductivity of 0.0033 S/cm. Examination of the microstructure of CuGaO2 Ceramics revealed the existence of thin laminar twins oriented along the {0 0 0 1} basal plane with thickness varying from several to several tens of nanometers. Doping with Ni2+ and Mg2+ did not result in a significant increase in conductivity and doping with Sn4+ resulted in a remarkable decrease in conductivity. With evidence from diffraction data on Sn-doped ceramics, it is proposed that the Sn4+ was ionically compensated with Cu vacancies. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：262 / 266

页数：5

共 36 条

[1] Delafossite oxides ABO2 (A = Ag, Cu; B = Al, Cr, Fe, In, Nd, Y) studied by perturbed-angular-correlation spectroscopy using a 111Ag(β-)111Cd probe [J].

Attili, RN ;

Saxena, RN ;

Carbonari, AW ;

Mestnik, J ;

Uhrmacher, M ;

Lieb, KP .

PHYSICAL REVIEW B, 1998, 58 (05) :2563-2569

[2] OPTO-ELECTRONIC PROPERTIES OF CUALO2 [J].

BENKO, FA ;

KOFFYBERG, FP .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1984, 45 (01) :57-59

[3] PREPARATION AND OPTOELECTRONIC PROPERTIES OF SEMICONDUCTING CUCRO2 [J].

BENKO, FA ;

KOFFYBERG, FP .

MATERIALS RESEARCH BULLETIN, 1986, 21 (06) :753-757

[4] THE OPTICAL INTERBAND-TRANSITIONS OF THE SEMICONDUCTOR CUGAO2 [J].

BENKO, FA ;

KOFFYBERG, FP .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1986, 94 (01) :231-234

[5] Electronic structure and bonding in CuMO2 (M = Al, Ga, Y) delafossite-type oxides:: An ab initio study [J].

Buljan, A ;

Alemany, P ;

Ruiz, E .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (38) :8060-8066

[6] Synthesis and processing of AgInO2 delafossite compounds by cation exchange reactions [J].

Clayton, JE ;

Cann, DP ;

Ashmore, N .

THIN SOLID FILMS, 2002, 411 (01) :140-146

[7] Characterization of transparent conducting oxides [J].

Coutts, TJ ;

Young, DL ;

Li, XN .

MRS BULLETIN, 2000, 25 (08) :58-65

[8] Transparent p-type conducting CuScO2+x films [J].

Duan, N ;

Sleight, AW ;

Jayaraj, MK ;

Tate, J .

APPLIED PHYSICS LETTERS, 2000, 77 (09) :1325-1326

[9] Chemical and thin-film strategies for new transparent conducting oxides [J].

Freeman, AJ ;

Poeppelmeier, KR ;

Mason, TO ;

Chang, RPH ;

Marks, TJ .

MRS BULLETIN, 2000, 25 (08) :45-51

[10]

Gall RB, 2003, CERAM ENG SCI PROC, V24, P143

← 1 2 3 4 →