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Title: Phase transition of La- chalcogenides under high pressure

The lanthanum compounds have been found to undergo transition from their initial NaCl-type structure to high pressure body centered tetragonal (BCT) structure (distorted CsCl-type P4/mmm) using CTIP model. The calculated values of cohesive energy, lattice constant, phase transition pressure, relative volume collapse agree well with the available measured data and better than those computed by earlier workers.
Authors:
 [1] ;  [2]
  1. Condensed Matter Theory Group, School of Studies in Physics, Jiwaji University, Gwalior - 474 011 (India)
  2. Department of Physics, Govt. K.R.G. P.G. Autonomous College, Gwalior - 474 001 (India)
Publication Date:
OSTI Identifier:
22269278
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CESIUM CHLORIDES; CHALCOGENIDES; LANTHANUM COMPOUNDS; LATTICE PARAMETERS; PHASE TRANSFORMATIONS; TETRAGONAL LATTICES