Premium
Debye‐Waller Factor for Small Concentration of Mössbauer Impurities in Metallic Solids
Author(s) -
Roy S. K.,
Bhattacharya D. L.
Publication year - 1984
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.2221230105
Subject(s) - impurity , debye , constant (computer programming) , mössbauer spectroscopy , materials science , metal , mean squared displacement , displacement (psychology) , force constant , condensed matter physics , chemistry , analytical chemistry (journal) , physics , computational chemistry , crystallography , molecule , metallurgy , chromatography , organic chemistry , psychology , computer science , molecular dynamics , psychotherapist , programming language
A simple theoretical analysis is presented of Mössbauer f ‐values for 57 Fe impurity in a general harmonic solid using double‐time Green function technique. An estimation of Mössbauer f ‐values are made taking mass disordering and force constant changes into account and treating the mass and force constant changes within separable kernel approximations. The effective host‐impurity force constant ratios used in the present work span a range 0.40 < φ′φ < 1.30. Good agreement between the results obtained from the calculations and those reported earlier is found, indicating the validity of the approximations made during the evaluation of recoilless fractions. The temperature dependences of the mean‐square displacement are also obtained for three different cases.