The micro-pulling-down (μ-PD) method is a crystal growth technique based on continuous transport of the melted substance through micro-channel(s) made in a crucible bottom. Continuous solidification of the melt is progressed on a liquid/solid interface positioned under the crucible. In a steady state, both the melt and the crystal are pulled-down with a constant (but generally different) velocity.
^Fukuda, Tsuguo; Chani, Valery I (2007). T. Fukuda; V.I. Chani (eds.). Shaped Crystals: Growth by Micro-Pulling-Down Technique. Berlin: Springer-Verlag. ISBN978-3-540-71294-7.
^Yoshikawa, A.; Nikl, M.; Boulon, G.; Fukuda, T. (2007). "Challenge and study for developing of novel single crystalline optical materials using micro-pulling-down method". Opt. Mater. 30 (1): 6–10. Bibcode:2007OptMa..30....6Y. doi:10.1016/j.optmat.2006.10.030.
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micro, pulling, down, micro, pulling, down, method, crystal, growth, technique, based, continuous, transport, melted, substance, through, micro, channel, made, crucible, bottom, continuous, solidification, melt, progressed, liquid, solid, interface, positioned. The micro pulling down m PD method is a crystal growth technique based on continuous transport of the melted substance through micro channel s made in a crucible bottom Continuous solidification of the melt is progressed on a liquid solid interface positioned under the crucible In a steady state both the melt and the crystal are pulled down with a constant but generally different velocity CrystallizationFundamentalsCrystal Crystal structure NucleationConceptsCrystallization Crystal growth Recrystallization Seed crystal Protocrystalline Single crystalMethods and technologyBoulesBridgman Stockbarger method Van Arkel de Boer processCzochralski method Epitaxy Flux methodFractional crystallizationFractional freezing Hydrothermal synthesisKyropoulos methodLaser heated pedestal growthMicro pulling downShaping processes in crystal growthSkull crucibleVerneuil methodZone meltingvteMany different types of crystal are grown by this technique including Y3Al5O12 Si Si Ge LiNbO3 a Al2O3 Y2O3 Sc2O3 LiF CaF2 BaF2 etc 1 2 Crystal growth routine EditThis section does not cite any sources Please help improve this section by adding citations to reliable sources Unsourced material may be challenged and removed February 2021 Learn how and when to remove this template message Standard routine procedure used in the growth of most of m PD crystals is well developed The general stages of the growths include Charging of the crucible with starting materials mixture of powders Heating of the crucible until starting materials in the crucible are completely melted Upward displacement of the seed until its contact with the meniscus or crucible Formation of the meniscus and partial melting of the seed top Correction of the shape of the meniscus through appropriate adjustment of crucible temperature and position of the seed crystal Crystal growth through pulling of the seed in downward direction Separation of the as grown crystal from the meniscus Cooling of the system including the crystal and the crucible to room temperatureSee also EditCrystal growth Czochralski process Float zone silicon Flux method Laser heated pedestal growth Shaping processes in crystal growth Verneuil processLithium niobate Sapphire Scandium III oxide Yttrium aluminium garnetReferences Edit Fukuda Tsuguo Chani Valery I 2007 T Fukuda V I Chani eds Shaped Crystals Growth by Micro Pulling Down Technique Berlin Springer Verlag ISBN 978 3 540 71294 7 Yoshikawa A Nikl M Boulon G Fukuda T 2007 Challenge and study for developing of novel single crystalline optical materials using micro pulling down method Opt Mater 30 1 6 10 Bibcode 2007OptMa 30 6Y doi 10 1016 j optmat 2006 10 030 This science article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Micro pulling down amp oldid 1139456867, wikipedia, wiki, book, books, library,
