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Vibrational Mechanics and Binding Energies of Some Rare Earth H. C. P. Metals
Author(s) -
Saxena K. C.,
Rathore R. P. S.
Publication year - 1993
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.2221760107
Subject(s) - terbium , holmium , binding energy , ion , dispersion (optics) , phonon , electron , chemistry , atomic physics , exponential function , molecular physics , materials science , physics , condensed matter physics , quantum mechanics , laser , mathematical analysis , mathematics
A theoretical study comprising the ion–ion and electron‐ion interactions to predict the phonon dispersion and binding energies in h. c. p. metals like holmium (Ho) and terbium (Tb) is developed. The former interactions are taken care of by the modified generalized exponential potential bearing only two parameters and capable of expressing interactions among any number of ions. The Krebs scheme, combined with the adequate dielectric screening, is employed to describe the latter interactions. The reliable and precise model so developed predicts the binding energies and phonon dispersion in the said metals in a direct and simple manner.