Phase transition in CeSe, EuSe and LaSe under high pressure

• Authors: Sadhna Singh , R. Singh , Atul Gour
• Languages of publication: EN

Abstracts

EN

The high pressure phase transition and elastic behavior of rare earth monoselenides (CeSe, EuSe and LaSe) which crystallize in a NaCl-structure have been investigated using the three body interaction potential (TBIP) approach. These interactions arise due to the electronshell deformation of the overlapping ions in crystals. The TBP model consists of a long range Coulomb, three body interactions and the short range overlap repulsive forces operative up to the second neighboring ions. The authors of this paper estimated the values of the phase transition pressure and the associated volume collapse to be closer than other calculations. Thus, the TBIP approach also promises to predict the phase transition pressure and pressure variations of elastic constants of lanthanide compounds.

Keywords

EN

Phase transition; transition pressure; three body interaction; elastic constants; Gibbs free energy

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2007
• Volume: 5
• Issue: 4
• Pages: 576-585

Dates

published

1 - 12 - 2007

online

1 - 12 - 2007

Contributors

author

Sadhna Singh

• Gas Rahat Building Govindpura Bhopal, Madhya Pradesh. Bhoj (Open) University, 462016, India

author

R. Singh

• Institute of Professional and Scientific Studies and Research, Chaudhary Devi Lal University, Sirsa, 125055, India

author

Atul Gour

• Gas Rahat Building Govindpura Bhopal, Madhya Pradesh. Bhoj (Open) University, 462016, India

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Identifiers

DOI

10.2478/s11534-007-0037-2