Vibrational and electronic characteristics of Zr70Pd 30, Zr80Pt20 icosahedral quasicrystals and their amorphous Counterparts

G. Kh Panova, N. A. Chernoplekov, A. A. Shikov, T. Kemény, L. Kiss

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The heat capacity of Zr70Pd30 and Zr 80Pt20 icosahedral quasicrystals and their amorphous counterparts is studied in the temperature range 1.5-500 K in order to establish a correlation between the short-range atomic order and the physical properties of these compounds. A comparison of the data made it possible to reveal changes in the vibrational spectra within the low-and high-energy ranges, as well as in the density of states, superconducting characteristics, electron-phonon interaction, and anharmonicity of the lattice thermal vibrations and to calculate the main average frequencies (moments) characterizing the vibrational spectra. The lower superconducting transition temperature T c of the quasicrystals as compared to that of the amorphous counterparts can be associated with the decrease in the density of states on the Fermi surface, the hardening of the phonon spectrum, and the weakening of the electron-phonon coupling.

Original languageEnglish
Pages (from-to)1617-1622
Number of pages6
JournalPhysics of the Solid State
Volume49
Issue number9
DOIs
Publication statusPublished - Sep 2007

Fingerprint

Quasicrystals
Vibrational spectra
vibrational spectra
Electron-phonon interactions
Fermi surface
electron phonon interactions
electronics
hardening
Superconducting transition temperature
Fermi surfaces
Specific heat
Hardening
Physical properties
physical properties
transition temperature
specific heat
moments
vibration
Electrons
electrons

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Vibrational and electronic characteristics of Zr70Pd 30, Zr80Pt20 icosahedral quasicrystals and their amorphous Counterparts. / Panova, G. Kh; Chernoplekov, N. A.; Shikov, A. A.; Kemény, T.; Kiss, L.

In: Physics of the Solid State, Vol. 49, No. 9, 09.2007, p. 1617-1622.

Research output: Contribution to journalArticle

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