Pressure and temperature induced elastic properties of rare earth chalcogenides
- School of Physics, Vigyan Bhavan, Devi Ahilya University, Khandwa Road Campus, Indore 452001 (India)
- Department of Physics, Ranchi College, Ranchi University Ranchi-834008, Jharkhand (India)
- Department of Physics, M. B. Khalsa College, Raj Mohallah, Indore 452002 (India)
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.
- OSTI ID:
- 22606540
- Journal Information:
- AIP Conference Proceedings, Vol. 1728, 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); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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