On the crystal structure stability of calcite-type carbonates
β Scribed by Dr. Chr. Balarew; L. Markov; K. Petrov
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- English
- Weight
- 368 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0232-1300
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The tetragonal crystal-structure type of chalcopyrites (chemical formula ) is a superstructure of sphalerite type. The c/a ratio differs generally from the ideal value 2, i.e., the crystal structure is pseudocubically distorted. For CuInSe 2 and CuGaSe 2 thin films, simulations demonstrate that it
The crystal structure of \(\mathrm{NaFe}_{3} \mathrm{~V}_{9} \mathrm{O}_{t 9}\) (hexagonal, \(P 6_{3} / m m c, a=5.8388(1), c=22.8017(3) \AA\) ) was determined by Rietveld refinements of both neutron and X-ray powder diffraction data. \(\mathrm{NaFe}_{3} \mathrm{~V}_{9} \mathrm{O}_{19}\) crystallize