2007
DOI: 10.1134/s1063774507030145
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Investigation of the structure and properties of quartz in the α-β transition range by neutron diffraction and mechanical spectroscopy

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Cited by 22 publications
(13 citation statements)
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“…RUS data at ∼1 MHz from a polycrystalline sample show that Q −1 has a small peak in the vicinity of the transition point (McKnight et al . 2008), and a similar peak is seen also at ∼1 kHz (Nikitin et al . 2007).…”
Section: Phase Transitions Which Might Contribute To Anelastic Losssupporting
confidence: 56%
“…RUS data at ∼1 MHz from a polycrystalline sample show that Q −1 has a small peak in the vicinity of the transition point (McKnight et al . 2008), and a similar peak is seen also at ∼1 kHz (Nikitin et al . 2007).…”
Section: Phase Transitions Which Might Contribute To Anelastic Losssupporting
confidence: 56%
“…An increase in plasticity is therefore expected near the phase transition and transformation‐induced superplasticity can occur in discrete zones of high microplasticity, surrounded by an elastically deformed medium. The phase transition can also facilitate failure of quartz rich rocks, which would be expected to promote the formation of shear zones or regions of high deformation [ Nikitin et al ., ]. Kern [] conducted a series of experiments with different samples containing various percentages of quartz crystals and found that the amount of softening near the α‐β phase transition seems to be independent of content of the constituent quartz crystals, although softening occurs over a narrower temperature range in quartzite (100 vol.% quartz) than granite and granulite (21.6 vol.% and 28.2 vol.% quartz, respectively).…”
Section: Geophysical Implications Of the α‐β Quartz Transitionmentioning
confidence: 99%
“…[] and Nikitin et al . [, ] identify weakening and seismic velocity reductions in areas of Tibet which influence the dynamic tectonics of the region. A high abundance of quartz‐rich rocks in the lower crust has been proposed as a major triggering factor for initiating deformation, but the role of the phase transition on increasing the potential importance of quartz in controlling such deformation has not been directly investigated.…”
Section: Introductionmentioning
confidence: 99%
“…'s at face value (Table 5, line 18). Among the powder diffraction refinements the largest difference is 0.0144(14) A observed by Nikitin, Markova, Balagurov, Vasin, and Alekseeva (2007), Table 6, line 58. The value of the "best" structure of low quartz at 291 K in Table 8 is close to the average of these two determinations.…”
Section: Amentioning
confidence: 89%