CRYSTAL-STRUCTURE OF THE LOW-TEMPERATURE FORM OF BISMUTH NIOBIUM OXIDE [ALPHA-BINBO4]

被引：82

作者：

SUBRAMANIAN, MA

CALABRESE, JC

机构：

[1] Central Research and Development Department E.I. du Pont de Nemours, Company Experimental Station Wilmington

来源：

MATERIALS RESEARCH BULLETIN | 1993年 / 28卷 / 06期

关键词：

BISMUTH; NIOBIUM AND OXYGEN;

D O I：

10.1016/0025-5408(93)90048-I

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single crystals of low temperature form of BiNb4 (alpha-form) are grown from BiOF flux below 900-degrees-C. The crystals are colorless, trapezodial in shape and electrically insulating. The compound has orthorhombic [a = 5.673 (2), b = 11.714(4) and c = 4.978(2) angstrom] symmetry with a centric space group Pnna (No. 52) and z = 4. The crystal structure was solved by means of single crystal x-ray diffraction and refined to R = 0.031. Both Bi and Nb have distorted octahedral oxygen coordination. The NbO6 octahedra are linked over four comers and thus the structure can be viewed as consisting of sheets of [NbO4]3- units separated by Bi3+ cations. The structure of alpha-BiNbO4 is essentially same as that of the low temperature form of alpha-Sn2+W6+O4.

引用

页码：523 / 529

页数：7

共 7 条

[1]

AURIVILLIUS B, 1951, ARK KEMI, V3, P153

[2] SYNTHESIS, PROPERTIES AND CRYSTAL-STRUCTURE OF BETA-SNWO4 [J].

JEITSCHKO, W ;

SLEIGHT, AW .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 1972, 28 (NOV15) :3174-3178

[3]

JEITSCHKO W, 1974, ACTA CRYSTALLOGR B, V30, P8

[4] CRYSTAL-STRUCTURE OF TRICLINIC BETA-BINBO4 [J].

KEVE, ET ;

SKAPSKI, AC .

JOURNAL OF SOLID STATE CHEMISTRY, 1973, 8 (02) :159-165

[5]

KEVE ET, 1967, J CHEM SOC CHEM COMM, P281

[6]

ROTH RS, 1963, AM MINERAL, V48, P1348

[7] PHASE EQUILIBRIUM RELATIONS IN BINARY SYSTEM BISMUTH SESQUIOXIDE-NIOBIUM PENTOXIDE [J].

ROTH, RS ;

WARING, JL .

JOURNAL OF RESEARCH OF THE NATIONAL BUREAU OF STANDARDS SECTION A-PHYSICS AND CHEMISTRY, 1962, 66 (06) :451-+

← 1 →