1. In situ study of rotating lattice single‐crystal formation in Sb2S3 glass by Laue μXRD
- Author
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Au‐Yeung, Courtney, Stan, Camelia, Tamura, Nobumichi, Jain, Himanshu, and Dierolf, Volkmar
- Subjects
chalcogenides ,crystal growth ,crystals ,crystallization ,X-ray methods ,Materials Engineering ,Mechanical Engineering ,Materials - Abstract
Single-crystal architectures in glass, formed by a solid-solid transformation via laser heating, are novel solids with a rotating lattice. To understand the process of lattice formation that proceeds via crystal growth, we have observed in situ Sb2S3 crystal formation under X-ray irradiation with simultaneous Laue micro X-ray diffraction (μXRD) pattern collection. By translating the sample with respect to the beam, we form rotating lattice single (RLS) crystal lines with a consistently linear relationship between the rotation angle and distance from nucleation site. The lines begin with a seed crystal, followed by a transition region comprising of sub-grain or very similarly oriented grains, followed by the presence of a rotating lattice single crystal of unrestricted length. The results demonstrate that the primary cause of lattice rotation within RLS crystals is the densification accompanying the glass → crystal transformation, rather than stresses produced from the difference in thermal expansion coefficient of the two phases or paraelectric → ferroelectric transition during cooling to ambient temperature.
- Published
- 2020