Lattice dynamics of lutetium

Journal Article · Mon Jan 15 04:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.975· OSTI ID:7173449

Pleschiutschnig, J; Blaschko, O ^[1]; Reichardt, W ^[2]

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1. Institut fuer Experimentalphysik, Universitaet Wien, Strudlhofgasse 4, A-1090 Wien, Austria (Austria)
2. Institut fuer Festkoerperphysik, Kernforschungszentrum Karlsruhe, Postfach 3640, D-7500 Karlsruhe, (Germany, F.R.)

The normal-mode frequencies of lutetium were measured at 295 K by inelastic neutron scattering along the three main symmetry directions of the hexagonal lattice. The data are analyzed with a Born--von Karman force model including interactions up to the eighth-nearest neighbors. The phonon-frequency-distribution function is calculated, and from that the lattice specific heat and the Debye temperature. The latter are found to be in good agreement with results from other experimental techniques.

• OSTI ID: 7173449
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:2; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
BORN-VON KARMAN THEORY
COHERENT SCATTERING
DEBYE TEMPERATURE
DIFFRACTION
ELEMENTS
LATTICE VIBRATIONS
LUTETIUM
MEDIUM TEMPERATURE
METALS
NEUTRON DIFFRACTION
NORMAL-MODE ANALYSIS
PHYSICAL PROPERTIES
RARE EARTHS
SCATTERING
SPECIFIC HEAT
THERMODYNAMIC PROPERTIES