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Contribution à l'étude de l'ionicité des liaisons dans le rutile
Author(s) -
Puget R.,
Godefroy L.
Publication year - 1975
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889875010497
Subject(s) - ionic bonding , dielectric , rutile , electric field , scattering , ion , condensed matter physics , materials science , chemistry , physics , optics , quantum mechanics , organic chemistry
Knowledge of both ionic dielectric susceptibility and ionic displacements induced by an electric field allows one to evaluate the effective charges on the ions. To determine the ionic displacements a method involving differential photometry of X‐rays and anomalous scattering has been used. The dielectric susceptibility is well known but its ionic part has not been measured, so that one can give only the maximum possible value ( f = 0.78) of the ionicity factor. In addition, it is shown that the effect of the local electric fields upon the atomic scattering factors is not significant.