Published February 1985
| Version v1
Journal article
Preparation, structure, and thermal behaviour of a new Ge-W bronce
Description
A hexagonal Ge-tungsten bronce with the composition Ge/sub 0.24/WO3 is obtained by chemical vapour deposition of a mixture of GeO2 and WO2 (temperature gradient: 930 to 830 0C). By means of a X-ray crystal structure analysis the space group was determined to be P622 and the lattice constants a = 744.0 pm, c = 381.7 pm. In absence of oxygen Ge/sub 0.24/WO3 is stable up to 850 0C; in contact with air it is oxydized at temperatures T > 670 0C. An anomaly in the thermal lattice expansion at temperatures T > 260 0C is discussed. (author)
Additional details
Additional titles
- Original title (German)
- Darstellung, Struktur und thermisches Verhalten einer neuen hexagonalen Ge-W-Bronze
Publishing Information
- Journal Title
- Z. Anorg. Allg. Chem.
- Journal Volume
- 521
- Series
- Z. Anorg. Allg. Chem.
- Journal Page Range
- 191-198
- ISSN
- 0044-2313
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- German Democratic Republic
- INIS RN
- 16057253
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BOND ANGLE; BOND LENGTHS; CHEMICAL PREPARATION; ELECTRIC CONDUCTIVITY; EXPERIMENTAL DATA; GERMANIUM OXIDES; HEXAGONAL LATTICES; HIGH TEMPERATURE; LATTICE PARAMETERS; MASS TRANSFER; MEDIUM TEMPERATURE; SOLID SOLUTIONS; SPACE GROUPS; TEMPERATURE DEPENDENCE; THERMAL EXPANSION; TUNGSTEN OXIDES; VERY HIGH TEMPERATURE; X-RAY DIFFRACTION
- Descriptors DEC
- CHALCOGENIDES; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DATA; DIFFRACTION; DISPERSIONS; ELECTRICAL PROPERTIES; EXPANSION; GERMANIUM COMPOUNDS; HOMOGENEOUS MIXTURES; INFORMATION; MIXTURES; NUMERICAL DATA; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; SOLUTIONS; SYMMETRY GROUPS; SYNTHESIS; TRANSITION ELEMENT COMPOUNDS; TUNGSTEN COMPOUNDS