Matches in SemOpenAlex for { <https://semopenalex.org/work/W830551450> ?p ?o ?g. }
Showing items 1 to 83 of
83
with 100 items per page.
- W830551450 abstract "An experiment on crystal growth of Pb(1-x)Sn(x)Te in microgravity is planned. This material is an alloy of the compound semiconductors PbTe and SnTe. It is a promising material for infrared diode lasers and detectors in the wavelength region between 6 and 30 micron. Since the electrical properties of Pb(1-x)Sn(x)Te depend greatly on the Pb/Sn ratio and crystalline defects as well as impurity concentration, homogeneous, defect-free, high-quality crystals are anticipated. Although many growth methods, such as the pulling method, the Bridgman method, the vapor growth method, etc., have been applied to the growth of Pb(1-x)Sn(x)Te, large, homogeneous, low-defect-density crystals have not yet been grown on Earth. The unsuccessful results were caused by buoyancy-driven convection in the fluids induced by the specific gravity difference between heated and cooled fluids on Earth. A crystal is grown by cooling the melt from one end of the ampoule. In crystal growth from the melt, about 30 percent of the SnTe in the melt is rejected at the solid-liquid interface during solidification. On Earth, the rejected SnTe is completely mixed with the remaining melt by convection in the melt. Therefore, SnTe concentration in the melt, and accordingly in the crystal, increases as the crystal grows. In the microgravity environment, buoyancy-driven convection is suppressed because the specific gravity difference is negligible. In that case, the rejected SnTe remains at the solid-liquid interface and its concentration increases only at the interface. If the growth rate is higher than the PbTe-SnTe interdiffusion rate, the amount of SnTe which diffuses from the interface into the melt increases as SnTe piles up at the interface, and finally it balances the amount of rejected SnTe during solidification, resulting in steady-state SnTe transportation at the interface. By using this principle, compositionally homogeneous crystals can be grown. Furthermore, low-defect-density crystals will be grown in microgravity, because convection causes crystalline defects by mising hot and cold fluids and generating temperature fluctuations in them." @default.
- W830551450 created "2016-06-24" @default.
- W830551450 creator A5077056890 @default.
- W830551450 date "1993-08-01" @default.
- W830551450 modified "2023-09-27" @default.
- W830551450 title "Growth experiment of narrow band-gap semiconductor PbSnTe single crystals in space (M-1)" @default.
- W830551450 hasPublicationYear "1993" @default.
- W830551450 type Work @default.
- W830551450 sameAs 830551450 @default.
- W830551450 citedByCount "0" @default.
- W830551450 crossrefType "journal-article" @default.
- W830551450 hasAuthorship W830551450A5077056890 @default.
- W830551450 hasConcept C108225325 @default.
- W830551450 hasConcept C10899652 @default.
- W830551450 hasConcept C113196181 @default.
- W830551450 hasConcept C121332964 @default.
- W830551450 hasConcept C159985019 @default.
- W830551450 hasConcept C174544924 @default.
- W830551450 hasConcept C178790620 @default.
- W830551450 hasConcept C185592680 @default.
- W830551450 hasConcept C192562407 @default.
- W830551450 hasConcept C199360897 @default.
- W830551450 hasConcept C26456737 @default.
- W830551450 hasConcept C2781285689 @default.
- W830551450 hasConcept C28845197 @default.
- W830551450 hasConcept C41008148 @default.
- W830551450 hasConcept C43617362 @default.
- W830551450 hasConcept C49040817 @default.
- W830551450 hasConcept C538625479 @default.
- W830551450 hasConcept C544956773 @default.
- W830551450 hasConcept C71987851 @default.
- W830551450 hasConcept C8010536 @default.
- W830551450 hasConcept C96485317 @default.
- W830551450 hasConcept C97355855 @default.
- W830551450 hasConceptScore W830551450C108225325 @default.
- W830551450 hasConceptScore W830551450C10899652 @default.
- W830551450 hasConceptScore W830551450C113196181 @default.
- W830551450 hasConceptScore W830551450C121332964 @default.
- W830551450 hasConceptScore W830551450C159985019 @default.
- W830551450 hasConceptScore W830551450C174544924 @default.
- W830551450 hasConceptScore W830551450C178790620 @default.
- W830551450 hasConceptScore W830551450C185592680 @default.
- W830551450 hasConceptScore W830551450C192562407 @default.
- W830551450 hasConceptScore W830551450C199360897 @default.
- W830551450 hasConceptScore W830551450C26456737 @default.
- W830551450 hasConceptScore W830551450C2781285689 @default.
- W830551450 hasConceptScore W830551450C28845197 @default.
- W830551450 hasConceptScore W830551450C41008148 @default.
- W830551450 hasConceptScore W830551450C43617362 @default.
- W830551450 hasConceptScore W830551450C49040817 @default.
- W830551450 hasConceptScore W830551450C538625479 @default.
- W830551450 hasConceptScore W830551450C544956773 @default.
- W830551450 hasConceptScore W830551450C71987851 @default.
- W830551450 hasConceptScore W830551450C8010536 @default.
- W830551450 hasConceptScore W830551450C96485317 @default.
- W830551450 hasConceptScore W830551450C97355855 @default.
- W830551450 hasLocation W8305514501 @default.
- W830551450 hasOpenAccess W830551450 @default.
- W830551450 hasPrimaryLocation W8305514501 @default.
- W830551450 hasRelatedWork W1515532469 @default.
- W830551450 hasRelatedWork W1636231724 @default.
- W830551450 hasRelatedWork W1796709399 @default.
- W830551450 hasRelatedWork W2000427736 @default.
- W830551450 hasRelatedWork W2017770580 @default.
- W830551450 hasRelatedWork W2058454096 @default.
- W830551450 hasRelatedWork W2075625714 @default.
- W830551450 hasRelatedWork W2087381360 @default.
- W830551450 hasRelatedWork W2127598725 @default.
- W830551450 hasRelatedWork W2149165013 @default.
- W830551450 hasRelatedWork W2314283530 @default.
- W830551450 hasRelatedWork W2552375042 @default.
- W830551450 hasRelatedWork W2560768803 @default.
- W830551450 hasRelatedWork W2596821010 @default.
- W830551450 hasRelatedWork W271067718 @default.
- W830551450 hasRelatedWork W3166709673 @default.
- W830551450 hasRelatedWork W3184489442 @default.
- W830551450 hasRelatedWork W573592284 @default.
- W830551450 hasRelatedWork W800748411 @default.
- W830551450 hasRelatedWork W2123149187 @default.
- W830551450 isParatext "false" @default.
- W830551450 isRetracted "false" @default.
- W830551450 magId "830551450" @default.
- W830551450 workType "article" @default.