1975
DOI: 10.1016/0022-3697(75)90066-9
|View full text |Cite
|
Sign up to set email alerts
|

On the mechanism of the α-β phase transformation of quartz

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

8
110
0

Year Published

1976
1976
2020
2020

Publication Types

Select...
8

Relationship

0
8

Authors

Journals

citations
Cited by 188 publications
(118 citation statements)
references
References 12 publications
8
110
0
Order By: Relevance
“…Hence it is reasonable to assume that, for a given chemical composition (SiO 2 or GeO 2 ), l(dsecθ/dR)(dR/dl) will also be approximately equal for both polymorphs if the CTM is valid. dδ/dθ and dθ/dsecθ are purely geometrical and expressions relating δ to θ have been derived elsewhere for α-quartz [31] and α-cristobalite [21] structures containing regular tetrahedra.…”
Section: Poisson's Ratios Of the Undeformed Silica And Germania Polymmentioning
confidence: 99%
See 1 more Smart Citation
“…Hence it is reasonable to assume that, for a given chemical composition (SiO 2 or GeO 2 ), l(dsecθ/dR)(dR/dl) will also be approximately equal for both polymorphs if the CTM is valid. dδ/dθ and dθ/dsecθ are purely geometrical and expressions relating δ to θ have been derived elsewhere for α-quartz [31] and α-cristobalite [21] structures containing regular tetrahedra.…”
Section: Poisson's Ratios Of the Undeformed Silica And Germania Polymmentioning
confidence: 99%
“…The Poisson's ratios (ν 31 ) thus calculated with this constraint of rigid SiO 4 tetrahedra are also included in table 3. The analytical model calculations employed the experimentally determined tilt angles of δ = 16.3° and 23.5° for silica α-quartz [31], and α-cristobalite [32], respectively and 26.5° and 34.0° for germania α-quartz [33], and α-cristobalite [34], respectively.…”
Section: Poisson's Ratios Of the Undeformed Silica And Germania Polymmentioning
confidence: 99%
“…The excellent agreement with conventional X-ray results is shown by inclusion of values of ~p calculated from the high-temperature X-ray data (Young, 1962). Also shown, for comparison, are points from Grimm & Dorner's (1975) predicted q~(T) and data from Bachheimer & Dolino's (1975) Maker Experiment measurements of dl 1(73.…”
Section: Methodsmentioning
confidence: 99%
“…The first of these, Grimm & Dorner (1975), identifies ~0 as an order parameter and gives a Landau theory functional form for ~o(T). The other paper, Bachheimer & Dolino (1975), asserts, on the basis of group symmetry properties, that d~lt is itself a representation of the order parameter.…”
Section: Theorymentioning
confidence: 99%
“…The hettotypes of the quartz family may be partially collapsed structures, such as o-quartz, and may contain cavity ions. Tilting models have been developed for the quartz family and geometrical relationships between the cell parameters, the size of the tetrahedron and the tilt angle, assuming regular tetrahedra, were reported independently by Taylor (1972), Megaw (1973), and Grimm and Dorner (1975). Grimm and Dorner (1975) also gave an equation for the calculation of the tilt angle of o-quartz in the presence of distorted tetrahedra, but their equation requires knowledge of the atomic co-ordinates.…”
Section: Framework Structures Without Cavity Ions: Each Shared Vertexmentioning
confidence: 99%