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Low-temperature infrared studies: II. Preliminary communication on the phase transitions of ammonium sulphate and ammonium-d4 sulphate

โœ Scribed by C.J.H. Schutte; A.M. Heyns


Publisher
Elsevier Science
Year
1968
Tongue
English
Weight
261 KB
Volume
1
Category
Article
ISSN
0009-2614

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Low-temperature infrared studies: III. T
โœ C.J.H. Schutte; A.M. Heyns ๐Ÿ“‚ Article ๐Ÿ“… 1968 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 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