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Article: Data on modern physics reported by M. Talati and co-researchers.
- Article from:
- Physics Week
- Article date:
- November 17, 2009
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"Temperature dependence of phonons spectra and allied properties of rhombohedral La0.7Sr0.3MnO3 are investigated by using the lattice dynamical method. A tendency of phonon mode to instability causing JT lattice distortion is reflected in a softening of the stretching mode in the phonon dispersion curve of La0.7Sr0.3MnO3 at both 1.6 and 300 K. While the A(1g) mode softens because of gradual decrease in MnO6 rotations, the stretching mode hardens upon reduction in temperature," investigators in Dresden, Germany report.
"The distinct features of phonon modes at different temperatures are also reflected in the calculated phonon density of states. Other thermal ...