Thermodynamic Studies on NdFeO3(s)
β Scribed by S.C. Parida; Smruti Dash; Ziley Singh; R. Prasad; K.T. Jacob; V. Venugopal
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 200 KB
- Volume
- 164
- Category
- Article
- ISSN
- 0022-4596
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## Abstract The firstβ and secondβorder Ramanβactive phonons in the orthorhombic __Pbnm__ NdFeO~3~ single crystals were studied by means of polarized Raman scattering and lattice dynamics computations (LDC). The zoneβcenter phonons of __A__~__g__~ symmetry were distinguished from the __B__~1__g__~
The standard molar Gibbs energy of formation of barium tellurite, BaTeO 3 (s), was determined by the transpiration technique using pure oxygen as the carrier gas in the temperature range 1133 K to 1260 K. The condensate was exclusively identified as TeO 2 (s) by chemical analysis. From a quantitativ