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Physical properties and phase transitions in AC60

โœ Scribed by J. Winter; H. Kuzmany

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
317 KB
Volume
36
Category
Article
ISSN
0008-6223

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โœฆ Synopsis

The phase transitions from an fee to an orthorhombic structure were studied in detail for the AC,, compounds.

For moderately fast cooling (10 K min-', continuously) RbC, and K& gave an overall identical spectra. In the frequency range of the former A,(2) pinch mode two components were detected. There origin could be explained assuming a Davidov splitting or by modes which become Raman active in the orthorhombic structure. Quenching and annealing experiments carried out with the RbC, fee high temperature phase showed significant changes in the spectrum which were interpreted as the Raman response of a metastable monomer and a single-bonded dimer phase.

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