X-ray study of high pressure phases in NH4LiSO4
High-pressure X-ray scattering study of NH 4 LiSO 4 has been made up to 16 kbar at room temperature in a gasketted diamond anvil cell. It undergoes phase transitions at about 6.5 kbar from the ferroelectric phase to an intermediate pressure phase, then to a super structure phase (a=2a 0 , b=2b 0 , c...
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| Veröffentlicht in: | Ferroelectrics 1994-09, Vol.159 (1), p.61-66 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng ; jpn |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | High-pressure X-ray scattering study of NH
4
LiSO
4
has been made up to 16 kbar at room temperature in a gasketted diamond anvil cell. It undergoes phase transitions at about 6.5 kbar from the ferroelectric phase to an intermediate pressure phase, then to a super structure phase (a=2a
0
, b=2b
0
, c=c
0
) at about 12.4 kbar. Symmetries of the intermediate and super structure phases have been determined as P2
1
11(Z=4) and C111 (Z=48). Crystal structure was analyzed at 5.7, 6.9 and 9.5 kbar. |
|---|---|
| ISSN: | 0015-0193 1563-5112 |
| DOI: | 10.1080/00150199408007549 |