Title of article
High pressure phase transition in metallic LaB6: Raman and X-ray diffraction studies
Author/Authors
Teredesai، نويسنده , , Pallavi and Muthu، نويسنده , , D.V.S. and Chandrabhas، نويسنده , , N. and Meenakshi، نويسنده , , S. and Vijayakumar، نويسنده , , V. and Modak، نويسنده , , P. and Rao، نويسنده , , R.S. and Godwal، نويسنده , , B.K. and Sikka، نويسنده , , S.K. and Sood، نويسنده , , A.K.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2004
Pages
6
From page
791
To page
796
Abstract
High pressure Raman and angle dispersive X-ray diffraction (ADXRD) measurements on the metallic hexaboride LaB6 have been carried out upto the pressures of about 20 GPa. The subtle phase transition around 10 GPa indicated in Raman measurements is confirmed by ADXRD experiments to be a structural change from cubic to orthorhombic phase. Ab-initio electronic band structure calculations using full potential linear augmented plane wave method carried out as a function of pressure show that this transition is driven by the interception of Fermi level by electronic band minimum around the transition pressure.
Keywords
A. LaB6 , C. Raman scattering , C. X-ray diffraction , E. High pressure
Journal title
Solid State Communications
Serial Year
2004
Journal title
Solid State Communications
Record number
1788770
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