CRYSTAL-STRUCTURE AND ANION DISORDER IN BETA-PBF2

被引：21

作者：

BACHMANN, R

SCHULZ, H

机构：

[1] Max-Planck-Inst fuer, Festkoerperforschung, Stuttgart,, West Ger, Max-Planck-Inst fuer Festkoerperforschung, Stuttgart, West Ger

来源：

SOLID STATE IONICS | 1983年 / 9-10卷 / DEC期

关键词：

CRYSTALS - Structure - FLUORINE COMPOUNDS - Electric Conductivity - NEUTRON DIFFRACTION APPARATUS - Applications;

D O I：

10.1016/0167-2738(83)90287-4

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 fluorine distribution in beta -PbF//2 was obtained by analyzing the elastic neutron diffraction data. The fluorine distribution at high temperatures shows that the conduction path connects neighboring regular positions of the fluorite structure. The path is not a straight line but bent towards the octahedral void which however is not a point of the conduction path. Interpreting the fluorine distribution in terms of an effective one practical potential it is shown that the defect concentration of the fluorine ions is less than 5%. A potential barrier of 0. 26(5)ev for ionic motion is obtained, which agrees with the activation energy of conductivity at elevated temperatures.

引用

页码：521 / 523

页数：3

共 12 条

[1]

BACHMANN R, 1983, THESIS U KARLSRUHE

[2] ELECTRICAL-CONDUCTIVITY OF PBF2 [J].

BENZ, R .

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-FRANKFURT, 1975, 95 (1-3) :25-32

[3] IONIC-CONDUCTIVITY OF BETA LEAD FLUORIDE [J].

BONNE, RW ;

SCHOONMAN, J .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1977, 124 (01) :28-35

[4] ELECTRICAL-CONDUCTIVITY OF PBF2 AND SRCL2 CRYSTALS AT HIGH-TEMPERATURES [J].

CARR, VM ;

CHADWICK, AV ;

SAGHAFIAN, R .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1978, 11 (15) :L637-L641

[5] HIGH-TEMPERATURE HEAT CONTENT AND DIFFUSE TRANSITION OF LEAD FLUORIDE [J].

DERRINGTON, CE ;

NAVROTSKY, A ;

OKEEFFE, M .

SOLID STATE COMMUNICATIONS, 1976, 18 (01) :47-49

[6] IONIC-CONDUCTIVITY OF SOME ALKALINE-EARTH HALIDES [J].

DERRINGTON, CE ;

LINDNER, A ;

OKEEFFE, M .

JOURNAL OF SOLID STATE CHEMISTRY, 1975, 15 (02) :171-174

[7] INVESTIGATION OF ANION DISORDER IN PBF2 AT HIGH-TEMPERATURES BY NEUTRON-DIFFRACTION [J].

DICKENS, MH ;

HAYES, W ;

HUTCHINGS, MT ;

SMITH, C .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1982, 15 (19) :4043-4060

[8] DIFFUSE TRANSITION AND MELTING IN FLUORITE AND ANTI-FLUORITE TYPE OF COMPOUNDS - HEAT CONTENT OF POTASSIUM SULFIDE FROM 298 TO 1260 DEGREES K [J].

DWORKIN, AS ;

BREDIG, MA .

JOURNAL OF PHYSICAL CHEMISTRY, 1968, 72 (04) :1277-&

[9] NMR RELAXATION AND SELF-DIFFUSION IN PBF2 [J].

GORDON, RE ;

STRANGE, JH .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1978, 11 (15) :3213-3223

[10]

Koto K., 1980, Solid State Ionics, V1, P355, DOI 10.1016/0167-2738(80)90034-X

← 1 2 →