Title of article
Anomalous mode coupling and phase transition of KNbO3 under high pressure
Author/Authors
Shamim، نويسنده , , M.Md and Ishidate، نويسنده , , T، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
5
From page
713
To page
717
Abstract
Raman spectra of KNbO3 under high pressure have been analyzed on the basis of the two-mode coupling model. It has been found that the phase transitions from orthorhombic to tetragonal and from tetragonal to cubic occur at 7 and 8 GPa, respectively, accompanied by an abrupt jump of the mode width of one mode. The mode coupling occurs even in the cubic phase.
Keywords
A. Ferroelectrics , E. Strain , E. Inelastic light scattering , D. Phase transitions , High pressure
Journal title
Solid State Communications
Serial Year
2000
Journal title
Solid State Communications
Record number
1769101
Link To Document