6533b821fe1ef96bd127c167

RESEARCH PRODUCT

LaAg x In1?x

R. TakkeB. RenkerB. LüthiK. KnorrH. J. LauterWolf Assmus

subject

Phase transitionTetragonal crystal systemMaterials scienceCondensed matter physicsPhononQuasielastic neutron scatteringNeutron diffractionSoft modesCondensed Matter PhysicsSmall-angle neutron scatteringInelastic neutron scatteringElectronic Optical and Magnetic Materials

description

The phonon dispersion of LaAg x In1−x (x=1, 0.89, 0.8) has been studied by inelastic neutron scattering in the cubic high temperature phase. A soft mode behaviour was observed at theM-point. The doubling and the cubic to tetragonal deformation of the elementary cell was observed through the phase transition. The measurements of the elastic constants were extended to 450 K and their magnetic field dependence was investigated.

https://doi.org/10.1007/bf01301521