NEUTRON, X-RAY AND LATTICE DYNAMICAL STUDIES OF Sb2 S3

K. Rao , V. Padmanabhan , Neutron Division , P. Vijayaraghavan , S. Chaplot

'Elastic'neutron and x-ray diffraction patterns from crystals of Sb2S3 (minera1 stibnite) show that the crystals, while ordered along <010> (the chain axis) , are disordered about <010>. Extensive diffuse intensity perpendicular to <010> direction is observed. Inelastic scattering studies using 1.4Å neutrons did not lead to any soft TA modes with q in the (OkO) plane and polarised along <010>. A few longitudinal phonons along <010> are seen. Results from lattice dynamical calculations based on a rigid ion model (with covalent bonding included) are discussed in the context of these observations.

Domaines: Articles anciens

K. Rao, V. Padmanabhan, Neutron Division, P. Vijayaraghavan, S. Chaplot. NEUTRON, X-RAY AND LATTICE DYNAMICAL STUDIES OF Sb2 S3. Journal de Physique Colloques, 1981, 42 (C6), pp.C6-637-C6-639. ⟨10.1051/jphyscol:19816185⟩. ⟨jpa-00221268⟩