ON THE EXISTENCE OF A PYROCHLORE-TYPE PHASE IN THE SYSTEM BI2O3-TIO2

被引：22

作者：

KAHLENBERG, V ^{[1
]}

BOHM, H ^{[1
]}

机构：

[1] TECH UNIV BERLIN,INST MINERAL & KRISTALLOG,D-10587 BERLIN,GERMANY

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 1995年 / 30卷 / 02期

关键词：

D O I：

10.1002/crat.2170300221

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The existence of a bismuth titanate in the range between Bi2Ti4O11 (Bi2O3 . 4 TiO2) and Bi4Ti3O12 (2 Bi2O3 . 3 TiO2) has been investigated by X-ray diffraction of samples prepared by solid stale reactions. For reaction temperatures above 1100 degrees C and a starting composition Bi2O3 . 2 TiO2 there appeared additional lines which could be attributed to a cubic face-centred cell with a = 10.354 Angstrom. A multiphase Rietveld analysis based on X-ray powder diffraction data confirmed the structural model of a pyrochlore for this compound. There is evidence that this phase belongs to the group of defect pyrochlores with a Bi3+-deficiency resulting in a composition of Bi1.833Ti2O6.75.

引用

页码：237 / 241

页数：5

共 17 条

[1]

ALDRICH RE, 1971, J APPL PHYS, V43, P493

[2] CRYSTAL CHEMISTRY OF PYROCHLORE [J].

ALESHIN, E ;

ROY, R .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1962, 45 (01) :18-25

[3]

BALLMAN AA, 1967, J CRYST GROWTH, V1, P37

[4] SUBSTITUTIONAL SOLID-SOLUTIONS OF BISMUTH-CONTAINING LANTHANIDE DITITANATES, LN2-XBIXTI2O7 [J].

BAMBERGER, CE ;

DUNN, HW ;

BEGUN, GM ;

LANDRY, SA .

JOURNAL OF SOLID STATE CHEMISTRY, 1985, 58 (01) :114-118

[5]

BARSUKOVA ML, 1993, SOV PHYS-CRYSTALLOGR, V17, P739

[6]

BELYAEV IN, 1963, RUSS J INORG CHEM, V8, P199

[7]

FISCHER RX, 1993, MATERIALS SCI FORUM, V133, P287

[8]

KAHLENBERG V, UNPUB J ALLOYS COMP

[9]

KAHLENBERG V, 1994, UNPUB ACTA CRYST

[10]

Keneman S. A., 1970, Ferroelectrics, V1, P227, DOI 10.1080/00150197008241488

← 1 2 →