Ge(HPO 4 ) 2 'H 2 O has been hydrothermally prepared and its thermal behavior has been studied by DTA and thermodi4ractometry. Three pyrophosphates can be obtained on heating at high temperature. -GeP 2 O 7 is protocrystalline with a layered structure related to that of the pristine material. -GeP 2
Crystal structures and thermal expansion of fullerenes
β Scribed by C.K. Mathews; S. Rajagopalan; K.V.G. Kutty; R. Asuvathraman; N. Sivaraman; T.G. Srinivasan; P.R. Vasudeva Rao
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 219 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0038-1098
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π SIMILAR VOLUMES
Graphite crystal expansions were derived as a function of' temperature usmg the theoretical relationships of Riley; the resultant equations provide reasonable tits to the measured lattice expansion data over the temperature range 300-3000%
The effects of postdeposition thermal annealing on the structure and properties of C& films are investigated. Non-oxygenated C,, films are heated at 200Β°C under vacuum. UV/visible absorption spectroscopy shows a decrease in the intensities of the allowed transitions and a red-shift of up to 50 nm. I