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Conventional Czochralski growth of large Li2MoO4 single crystals

Abstract : Lithium molybdate single crystals up to one kilogram have been grown by a conventional Czochralski process. The growth configuration (geometry, coil, crucible, insulation casing) was optimized by numerical simulation of heat and mass transfer. Dislocations are shown to belong to the basal glide system. Their density (≤ 10 4 cm-2) and luminescence properties indicate crystal quality similar to that of previously reported crystals grown by Czochralski technique. Numerical simulation of thermo-elastic stresses suggest that the crack observed in one of these crystals is rather due to a mechanical accident than to internal stresses during growth.
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https://hal.archives-ouvertes.fr/hal-03417415
Contributor : Matias VELAZQUEZ Connect in order to contact the contributor
Submitted on : Friday, November 5, 2021 - 5:49:54 PM
Last modification on : Sunday, June 26, 2022 - 3:18:43 AM
Long-term archiving on: : Sunday, February 6, 2022 - 7:31:41 PM

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A Ahmine, M Velazquez, V Nagirnyi, I Romet, T Duffar. Conventional Czochralski growth of large Li2MoO4 single crystals. Journal of Crystal Growth, Elsevier, 2023. ⟨hal-03417415⟩

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