Phase transitions of quartz studied by a.c. calorimetry

作者: Haruhiko Yao , Ichiro Hatta

DOI: 10.1016/0040-6031(95)02450-6

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摘要: Abstract An a.c. calorimetric heat capacity measurement has been performed on high-quality synthetic quartz. It was found that at the incommensurate (IC)-β-phase transition, C p of as-grown samples show critical behavior, i.e. there is a sharp peak IC-β transition. The shapes are almost identical in both heating and cooling runs. However, when were annealed α-phase just below α-IC became considerably rounded and, same time, transition temperature slightly increased. peaks dissimilar for samples.

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