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Influence of Electron‐Phonon Coupling on the Mössbauer Quadrupole Interaction in FeSiF 6 · 6 H 2 O
Author(s) -
Sinha T. P.
Publication year - 1992
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221690227
Subject(s) - quadrupole splitting , quadrupole , phonon , electron , coupling (piping) , condensed matter physics , mössbauer spectroscopy , atomic physics , energy level splitting , lattice (music) , crystal (programming language) , physics , chemistry , materials science , hyperfine structure , crystallography , quantum mechanics , computer science , acoustics , programming language , metallurgy
The Mössbauer quadrupole splitting of 57 Fe 2+ (3d 6 , 5 D) in FeSiF 6 · 6 H 2 O decreases with temperature increasing from 77 to 300 K. This cannot be explained on the basis of a static crystal field interaction only, which is usually used to obtain the electronic eigenstates and resulting quadrupole splitting. In this paper the effect of electron‐phonon coupling arising from the orbit‐lattice interaction is included to obtain the perturbed electron‐phonon states, and then quadrupole splitting is calculated from these states. The temperature dependence of quadrupole splitting thus calculated agrees reasonably well with the experimental results.