Lattice Dynamical Calculations for Inverse Spinel Compounds

• Authors: A. Kushwaha
• Languages of publication: EN

Abstracts

EN

Lattice dynamical calculations have been performed for inverse spinel structure compounds MIn_{2}S_{4} (M = Mn and Co) using the proposed six parameter bond-bending force constant model. In this model, the short-range force constant is calculated by using the Taylor expansion of the potential energy in the harmonic approximation. This model is applied to study the zone-centre (Γ=0) phonon frequencies of inverse spinels MIn_{2}S_{4} (M = Mn and Co). The significant outcome of the present work is that the second neighbor interactions (octahedral bonding) are stronger than the first neighbor interactions (tetrahedral bonding). The zone-center phonon frequencies, calculated using these parameters, are found to be in very good agreement with the observed results.

Keywords

EN

63.20.-e

Discipline

• 63.20.-e: Phonons in crystal lattices(for phonons in superconductors, see 74.25.Kc; see also 43.35.Gk Phonons in crystal lattice, quantum acoustics—in Acoustics Appendix)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 3
• Pages: 741-743

Dates

published

2015-03

received

2014-05-15

(unknown)

2015-01-21

Contributors

author

A. Kushwaha

• Department of Physics, K.N. Government P.G. College, Gyanpur, Bhadohi-221 304, India

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Identifiers

DOI

10.12693/APhysPolA.127.741