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Title: Pressure and temperature induced elastic properties of rare earth chalcogenides

The pressure and temperature dependent mechanical properties as Young modulus, Thermal expansion coefficient of rare earth REX (RE = La, Pr, Eu; X = O, S, Se, and Te) chalcogenides are studied. The rare earth chalcogenides showed a structural phase transition (B1–B2). Pressure dependence of Young modulus discerns an increase in pressure inferring the hardening or stiffening of the lattice as a consequence of bond compression and bond strengthening. Suppressed Young modulus as functions of temperature infers the weakening of the lattice results in bond weakening in REX. Thermal expansion coefficient demonstrates that REX (RE = La, Pr, Eu; X = O, S, Se, and Te) chalcogenides is mechanically stiffened, and thermally softened on applied pressure and temperature.
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:
22606540
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1728; Journal Issue: 1; Conference: ICC 2015: International conference on condensed matter and applied physics, Bikaner (India), 30-31 Oct 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; CHALCOGENIDES; COMPRESSION; ELASTICITY; EUROPIUM COMPOUNDS; HARDENING; INDIUM FLUORIDES; LANTHANUM COMPOUNDS; OSMIUM COMPOUNDS; PHASE TRANSFORMATIONS; PRASEODYMIUM COMPOUNDS; PRESSURE DEPENDENCE; RARE EARTH COMPOUNDS; SELENIUM COMPOUNDS; SULFUR COMPOUNDS; TELLURIUM COMPOUNDS; TEMPERATURE DEPENDENCE; THERMAL EXPANSION; YOUNG MODULUS