Low-temperature infrared studies: III. T
โ
C.J.H. Schutte; A.M. Heyns
๐
Article
๐
1968
๐
Elsevier Science
๐
English
โ 174 KB
The temperature dependence of the v4-bending band of the ND4+ . -ion in (ND4)2Cr207 shows changes at -170ยฐ, 140\*5. 120\*2 and 80\*5OK. From infrared evidence alone it cannot be decided which of the two possible phase-change sequences, discussed in the text, is correct -there seems to be a correkt