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Rigid-unit phonon modes and structural phase transitions in framework silicates
Rigid-unit phonon modes phase transitions framework silicates
2012/4/6
Therigid-unit modemodelprovides manynewinsights into the stability and physical properties offramework silicates. In this modelthe Si04and Al04tetrahedra aretreated asverystiff,to a first approximatio...
Phonon-spectroscopy on alkali-feldspars: Phase transitions and solid solutions
Phonon-spectroscopy alkali-feldspars Phase transitions solid solutions
2012/4/5
Thephonon spectra ofIR-active vibrations in alkalifeldspars havebeensystematically investigated in the spectral range 50-2000 cm-I attemperatures between20and 900K. SampleswithhighdegreesofAl-Siorderd...