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Title: On the brittle nature of rare earth pnictides

The high-pressure structural phase transition and pressure as well temperature induced elastic properties in ReY; (Re = La, Sc, Pr; Y = N, P, As, Sb, Bi) pnictides have been performed using effective interionic interaction potential with emphasis on charge transfer interactions and covalent contribution. Estimated values of phase transition pressure and the volume discontinuity in pressure-volume phase diagram indicate the structural phase transition from NaCl to CsCl structure. From the investigations of elastic constants the pressure (temperature) dependent volume collapse/expansion, second order Cauchy discrepancy, anisotropy, hardness and brittle/ductile nature of rare earth pnictides are computed.
Authors:
; ;  [1] ;  [2] ;  [3]
  1. School of Physics, Vigyan Bhavan, Devi Ahilya University, Khandwa Road Campus, Indore 452001 (India)
  2. Department of Physics, Ranchi College, Ranchi University Ranchi-834008, Jharkhand (India)
  3. Department of Physics, M. B. Khalsa College, Raj Mohallah, Indore 452002 (India)
Publication Date:
OSTI Identifier:
22608733
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1731; Journal Issue: 1; Conference: DAE solid state physics symposium 2015, Uttar Pradesh (India), 21-25 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANISOTROPY; COVALENCE; CRYSTAL STRUCTURE; ELASTICITY; HARDNESS; INTERACTIONS; PHASE DIAGRAMS; PHASE TRANSFORMATIONS; PNICTIDES; RARE EARTH COMPOUNDS; TEMPERATURE DEPENDENCE; WELL TEMPERATURE