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Raman spectroscopic studies of α‐NaVO 3 , β‐NaVO 3 and NaVO 3 · 2H 2 O
Author(s) -
Kuok M. H.,
Tang S. H.,
Shen Z. X.,
Ong C. W.
Publication year - 1995
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250260408
Subject(s) - raman spectroscopy , process (computing) , chemistry , analytical chemistry (journal) , materials science , computer science , physics , environmental chemistry , optics , operating system
Abstract Sodium metavanadates in α (α‐NaVO 3 ), β (β‐NaVO 3 ) and hydrated (NaVO 3 · 2H 2 O) forms were studied down to 10 K. All the phases were found to be stable at low temperatures. The hydrated to β transformation above room temperature was found to occur at 305 K. This transition is first order and most likely a one‐step process, rather than a two‐step process as had been suggested previously.