Samples of quartz-bearing rocks were heated above the a (trigonal)–b (hexagonal) phase transformation of quartz (625–950 C) to explore changes in preferred orientation patterns. Textures were measured both in situ and ex situ with neutron, synchrotron X-ray and electron backscatter diffraction. The trigonal–hexagonal phase transformation does not change the orientation of cand a-axes, but posit...

Phase change materials based on chalcogenides are key enabling technologies for optical storage, such as rewritable CD and DVD, and recently also electrical nonvolatile memory, named phase change memory (PCM). In a PCM, the amorphous or crystalline phase affects the material band structure, hence the device resistance. Although phase transformation is extremely fast and repeatable, the amorphou...

An algorithm is proposed for automatic discovery of a set of dynamical rules that best captures both state transition and topological transformation in the empirical data showing time evolution of adaptive networks. Graph rewriting systems are used as the basic model framework to represent state transition and topological transformation simultaneously. Network evolution is formulated in two pha...

Heat treatment and stress state effects on the martensitic transformation in [001] and [123] oriented single crystal Ni54Fe19Ga27 alloys are determined. Characteristic temperatures increase for longer aging times and higher hold temperatures. The non-aged [001] crystals exhibit the smallest stress hysteresis and lowest critical stress in tension. The experimental results are interpreted based o...