Abstract
The polarizable point charge model is used to explain Mössbauer data on the electric field gradient (EFG) at the iron site in α- and β-LiMnFeF 6. Lattice summations are performed in direct space. The fluorine polarizability which fits the data is in reasonable agreement with the expected value (α F∼ 1.2 A ̊ 3) The dipolar contribution is found to be important. In both cases the main EFG component is positive. In β-LiMnFeF 6, according to the structure, the EFG tensor is axial with respect to the c axis; in α-LiMnFeF 6, the asymmetry parameter η is large (≅0.5) and the OZ axis is along the a axis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.