Hauptseite > Publikationsdatenbank > Peculiarities of FeSi phonon spectrum induced by a change of atomic volume > print

001     827463
005     20210129225835.0
024 7 _ |a 10.1134/S1063776116110170
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024 7 _ |a 1090-6509
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082 _ _ |a 530
100 1 _ |a Parshin, P. P.
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245 _ _ |a Peculiarities of FeSi phonon spectrum induced by a change of atomic volume
260 _ _ |a Heidelberg [u.a.]
|c 2016
|b Springer
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520 _ _ |a We analyze in detail the results of experimental investigations of the evolution of the thermal vibration spectra for iron atoms in iron monosilicide FeSi depending on two external parameters, viz., temperature T (in the range 46–297 K at pressure P = 0.1 MPa) and pressure P (in the range 0.1 MPa–43 GPa at temperature T = 297 K), obtained by nuclear inelastic scattering of synchrotron radiation. The decrease of the atomic volume is accompanied by a rearrangement of the phonon spectrum, which is manifested, in particular, in the splitting of the low-energy peak in the spectrum and in an increase of the energy for all phonons. The changes of the average energy of the iron atom vibrational spectrum and of the Debye energy with decreasing atomic volume are analyzed. Different versions of FeSi electron spectrum variation, which can be used to explain the observed phonon anomalies, are considered.
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700 1 _ |a Chumakov, A. I.
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700 1 _ |a Alekseev, P. A.
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773 _ _ |a 10.1134/S1063776116110170
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