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The growth of sapphire single crystals
dc.creator | Golubović, Aleksandar | |
dc.creator | Nikolić, Slobodanka | |
dc.creator | Djurić, Stevan | |
dc.creator | Valčić, Andreja | |
dc.date.accessioned | 2023-01-13T11:27:48Z | |
dc.date.available | 2023-01-13T11:27:48Z | |
dc.date.issued | 2001 | |
dc.identifier.issn | 0352-5139 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5363 | |
dc.description.abstract | Sapphire (Al2O3) single crystals were grown by the Czochralski technique both in air and argon atmospheres. The conditions for growing sapphire single crystals were calculated by using a combination of Reynolds and Grashof numbers. A critical crystal diameter dc = 20 mm and the critical rate of rotation ωc = 20 rpm were calculated from the hydrodynamics of the melt. The value of the rate of crystal growth was experimentally found to be 3.5 mm/h. According to our previous experiments, it was confirmed that three hours exposures to cone. H3PO4 at 593 K was suitable for chemical polishing. Also, three hours exposure to cone. H3PO4 at 523 K was found to be a suitable etching solution. The lattice parameters a = 0.47573 nm and c = 1.29893 nm were determined by X-ray powder diffraction. The obtained results are discussed and compared with published data. | sr |
dc.language.iso | en | sr |
dc.publisher | Serbian Chemical Society | sr |
dc.rights | openAccess | sr |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.source | Journal of the Serbian Chemical Society | sr |
dc.subject | Czochralski technique | sr |
dc.subject | Etching | sr |
dc.subject | Growth | sr |
dc.subject | Sapphire | sr |
dc.subject | Single crystal | sr |
dc.title | The growth of sapphire single crystals | sr |
dc.type | article | sr |
dc.rights.license | BY | sr |
dc.citation.epage | 418 | |
dc.citation.issue | 6 | |
dc.citation.rank | M23 | |
dc.citation.spage | 411 | |
dc.citation.volume | 66 | |
dc.identifier.doi | 10.2298/jsc0106411g | |
dc.identifier.fulltext | http://TechnoRep.tmf.bg.ac.rs/bitstream/id/13958/V66-no6-07.pdf | |
dc.identifier.scopus | 2-s2.0-0035536382 | |
dc.type.version | publishedVersion | sr |