Paramagnetic Mössbauer relaxation spectra by simple ab initio and stochastic models |
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Authors: | H -D Pfannes R Magalhães-Paniago |
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Institution: | (1) Departamento de Física, Universidade Federal de Minas Gerais, CP 702, 30161-970 Belo Horizonte, Brazil;(2) Present address: Physics Department, University of Houston, 77204-5504 Houston, TX, USA |
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Abstract: | The stochastic and ab initio (resolvent) methods for the calculation of Mössbauer relaxation spectra are shortly reviewed. The relaxation matrix based on a first order dynamical Hamiltonian is calculated and corresponding simulations are presented. The spin-phonon interaction spectral bath densities are calculated in the Debye approximation for the direct one and two phonon processes. Some least squares fits are presented. |
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