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Derivation of the conditions for equivalent positions in crystals: The dissymmetrization of barite by electron spin resonance spectra
- Source :
- Crystallography Reports. 57:751-757
- Publication Year :
- 2012
- Publisher :
- Pleiades Publishing Ltd, 2012.
-
Abstract
- The conditions for equivalent positions on the (hkl) face of growing crystal are derived using symmetry elements of the space group. It is shown by the example of the sp. gr. D2h16 that the conditions of equivalent position formation coincide with conditions of the reflection of diffracted beams by crystal. It is established that electron spin resonance (ESR) centers in barite, SO4− (I) and SO4− (II), with only two conjugate spectra with equal intensity out of four, and SO4− (III), with a different intensity of conjugate spectra KαM = 2, are localized into the growth pyramid of the (001) face with a [010] step. SO2−, SO3−,, and SO4− (IV) centers, having an identical intensity of the conjugate ESR spectra with KαM = 2, are localized into the growth pyramid of the (210) face with a growth step [001].
Details
- ISSN :
- 1562689X and 10637745
- Volume :
- 57
- Database :
- OpenAIRE
- Journal :
- Crystallography Reports
- Accession number :
- edsair.doi...........7a314958b3fbdbf97e05bceac862683b
- Full Text :
- https://doi.org/10.1134/s1063774512050070