Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Direct methods and applications to electron crystallography |
| Abstract | A study was conducted to describe the basics of the direct methods and their applications to electron crystallography. Theoretical considerations were discussed along with descriptions of some practical aspects and applications. The direct methods assumed that the crystal structure was potentially derived from the experimental knowledge of the moduli. It was demonstrated that there were combinations of phases that were origin-independent as they depended only on the crystal structure and had the potential to be estimated by means of the diffraction moduli. It was observed that electron diffraction was receiving increasing attention as a means of obtaining structural information when crystal structure solution was not achievable by X-ray techniques due to advancements in methods and instrumentation. Any perturbation causing observed magnitudes to deviate from the moduli of the Fourier transform of the potential field weakened the efficiency of the methods, as they relied on diffraction magnitudes. |
| Source | Advances in imaging and electron physics 123, pp. 291–310 |
| Journal | Advances in imaging and electron physics |
| Editor | Academic Press,, San Diego, Stati Uniti d'America |
| Year | 2002 |
| Type | Articolo in rivista |
| DOI | 10.1016/S1076-5670(02)80067-2 |
| Authors | Giacovazzo C. (a-b), Capitelli F. (b), Cuocci C. (a), Ianigro M. (b) |
| Text | 234931 2002 10.1016/S1076 5670 02 80067 2 Direct methods and applications to electron crystallography Giacovazzo C. a b , Capitelli F. b , Cuocci C. a , Ianigro M. b a Geomineralogy Department, Universita di Bari, Campus Universitario, 1 70125 Bari, Italy b Institute of Crystallography IC , Geomineralogy Department, Universita di Bari, Campus Universitario, 1 70125 Bari, Italy A study was conducted to describe the basics of the direct methods and their applications to electron crystallography. Theoretical considerations were discussed along with descriptions of some practical aspects and applications. The direct methods assumed that the crystal structure was potentially derived from the experimental knowledge of the moduli. It was demonstrated that there were combinations of phases that were origin independent as they depended only on the crystal structure and had the potential to be estimated by means of the diffraction moduli. It was observed that electron diffraction was receiving increasing attention as a means of obtaining structural information when crystal structure solution was not achievable by X ray techniques due to advancements in methods and instrumentation. Any perturbation causing observed magnitudes to deviate from the moduli of the Fourier transform of the potential field weakened the efficiency of the methods, as they relied on diffraction magnitudes. 123 Articolo in rivista Academic Press, 1076 5670 Advances in imaging and electron physics Advances in imaging and electron physics Adv. imaging electron phys. Advances in imaging and electron physics. Imaging and electron physics carmelo.giacovazzo GIACOVAZZO CARMELO massimo.ianigro IANIGRO MASSIMO francesco.capitelli CAPITELLI FRANCESCO corrado.cuocci CUOCCI CORRADO |