Published May 2002 | Version v1
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CEF-phonon interaction in the orthorhombic compound NdCu2

Creators

Description

The lattice dynamics in the orthorhombic compound NdCu2 has been studied by inelastic neutron scattering. An axial symmetric Born-von Karman (BvK) model was fitted to the neutron data. Discrepancies in the BvK fit procedure have been referred to the influence of the phonon - crystal-electric field (CEF) interaction obviously existing in NdCu2. In order to take this interaction into account, a Hamiltonian has been suggested which enables to quantify the phonon-CEF interaction and to overcome the problems in the fit-procedure. For a test of the thus obtained (modified) phonon dispersion relation, specific heat data and the measured phonon density of states have been analysed. (author)

Availability note (English)

Available from Technische Univ. Wien Bibliothek, Wiedner Hauptstrasse 6-8, 1040 Vienna (AT)

Additional details

Publishing Information

Imprint Pagination
123 p.

INIS

Country of Publication
Austria
Country of Input or Organization
Austria
INIS RN
35072524
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Thesis, Non-conventional Literature
Descriptors DEI
BORN-VON KARMAN THEORY; CRYSTAL LATTICES; ELECTRIC FIELDS; NEODYMIUM COMPOUNDS; NEUTRONS; PHONONS; SCATTERING
Descriptors DEC
BARYONS; CRYSTAL STRUCTURE; ELEMENTARY PARTICLES; FERMIONS; HADRONS; NUCLEONS; QUASI PARTICLES; RARE EARTH COMPOUNDS

Optional Information

Notes
Reference number: 803.683 II