Rigid unit modes in disordered nepheline: A study of a displacive incommensurate phase transition

Physics and Chemistry of Minerals

Volumn 27, Issue 4, 2000, Pages 285-290

  Hayward, S A ^a,b   Pryde, A K A ^a   De Dombal, R F ^a   Carpenter, M A ^a   Dove, M T ^a  

^a UNIVERSITY OF CAMBRIDGE   (United Kingdom)

^b UNIVERSITY OF SEVILLE   (Spain)

Author keywords

Incommensurate; Nepheline; Rigid unit mode

Indexed keywords

CRYSTAL STRUCTURE; NEPHELINE; PHASE TRANSITION; X-RAY DIFFRACTION;

EID: 0034059977     PISSN: 03421791     EISSN: None     Source Type: Journal    
DOI: 10.1007/s002690050257     Document Type: Article

References (25)

1. Arnold H (1965) Diffuse Röntgenbeugung und Kooperation bei der α-β Umwaldung von Quarz. Z Krist 121: 145-157
2. Bismayer U (1990) Hard mode Raman spectroscopy and its application to ferroelastic and ferroelectric phase transitions. Phase Transitions 27: 211-267
3. Carpenter MA, Cellai D (1996) Microstructures and high temperature phase transitions in kalsilite. Am Mineral 81: 561-584
4. de Dombal RF (1992) Phase transitions in nepheline and tridymite. PhD Thesis, University of Cambridge
5. Dove MT (1993) Introduction to lattice dynamics. Cambridge University Press, Cambridge
6. Dove MT, Heine V, Hammonds KD (1993a) Rigid Unit Modes in framework silicates. Min Mag 59: 629-639
7. Dove MT, Giddy AP, Heine V (1993b) Rigid Unit Model of displacive phase transitions in silicates. Trans Am Cryst Ass 27: 65-74
8. 2 tridymite: calculations and electron diffraction. Phys Chem Miner 23: 56-62
9. Dove MT, Keen DA, Hannon AC, Swainson IP (1997) Direct measurement of the Si-O bond length and orientational disorder in β-cristobalite. Phys Chem Miner 24: 311-317
10. Gibbs GV, Meagher EP, Newton MD, Swanson DK (1981) A comparison of experimental and theoretical bond length and angle variations for minerals, inorganic solids and molecules. In: Navrotsky A, O'Keefe M (eds) Structure and bonding in crystals. Academic Press, New York, pp 195-225
11. Giddy AP, Dove MT, Pawley GS, Heine V (1993) The determination of Rigid Unit Modes as potential soft modes for displacive phase transitions in framework crystal structures. Acta Crystallogr A49: 697-703
12. Hammonds KD, Dove MT, Giddy AP, Heine V (1994) CRUSH - a FORTRAN program for the analysis of the rigid-unit mode spectrum of a framework silicate. Am Mineral 79: 1207-1209
13. Hammonds KD, Dove MT, Giddy AP, Heine V, Winkler B (1996) Rigid-unit phonon modes and structural phase transitions in framework silicates. Am Mineral 81: 1057-1079
14. Matson DW, Sharma SK, Philpotts JA (1986) Raman spectra of some tectosilicates and of glasses along the orthoclase-anorthite and nepheline-anorthite joins. Am Mineral 71: 694-704
15. McConnell JDC (1962) Electron diffraction study of subsidiary maxima of scattered intensity in nepheline. Min Mag 33: 114-124
16. McConnell JDC (1981) Time-temperature study of the intensity of satellite reflections in nepheline. Am Mineral 66: 990-996
17. Palmer DC (1994) Stuffed derivatives of silica polymorphs. In: Heaney PJ, Prewitt CT, Gibbs GV (eds) Silica: physical behavior, geochemistry, and materials applications (Reviews in mineralogy, vol 29). Mineralogical Society of America, Washington, pp 83-122
18. Parker JM, McConnell JDC (1971) Transformation behaviour in the mineral nepheline. Nature Phys Sci 234: 178-179
19. Pryde AKA, Dove MT (1998) On the sequence of phase transitions in tridymite. Phys Chem Miner 26: 171-179
20. Salje EKH (1988) Kinetic rate laws derived from order parameter theory I: theoretical concepts. Phys Chem Miner 15: 336-348
21. Salje EKH (1992) Hard mode spectroscopy: experimental studies of structural phase transitions. Phase Transitions 37: 83-110
22. Swainson IP, Dove MT (1993) Low frequency floppy modes in β-cristobalite. Phys Rev Lett 71: 193-196
23. Swainson IP, Dove MT (1995) Molecular dynamics simulation of α- and β-cristobalite. Phys Chem Miner 22: 61-65
24. Thompson AB, Wennemer M (1979) Heat capacities and inversions in tridymite, cristobalite and tridymite-cristobalite mixed phases. Am Miner 64: 1018-1026
25. 2-tridymite. Phys Chem Miner 21: 421-433