polytype


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polytype

[′päl·i‚tīp]
(crystallography)
A type of polymorph whose different forms are due to more than one possible mode of atomic packing.
References in periodicals archive ?
Taking into account the results of the XRD measurements, we assume that formation of such microcrystals can be caused by the formation of Cd[I.sub.2] polytype of 12R modification.
Single-crystal sample of silicon carbide has been grown at Cree, Inc., by physical vapor transport (PVT) method with a relatively low concentration of growth defects: N dislocations [10.sup.4] [cm.sup.-2] and N micropipes ~10-[10.sup.2] [cm.sup.-2] for 4H polytype of n-SiC.
The latter optimally combine the proficiency of Polytype AG with the technology of the Digital Competence Centre of the corporate group.
(1) Jacobs's work in the ethnic community opened a multilingual niche market for the establishment of Polytype Press in Greenwich Village.
SiC has been a suitable material for high temperature and high power applications due to its superior material as well as electrical properties over Si and GaAs and availability of different polytypes in SiC.
Petersburg, from the offprints prepared in the polytype style of the 1830s to the small size of the original drawings, intended to reproduce the pocket-size effect of the almanacs of the 1820s (Benua 1980, 396).
The second cause contributing to the diverse polytype and interstratification formations is the accepted low or higher thermal energy.
For the preparation of SiC/PPy composites, [alpha]-SiC mainly 6H polytype of SiC with two polar surfaces, that is, silicon atoms terminated and carbon atoms terminated surface, was used.
His purpose is to unearth what he calls a polytype text, a text that is scriptible, writerly, open to the play of meanings.
Peter Schweizer of Polytype SA discussed degassing requirements for curtain coating.
They found that the most prevalent defect was formation of a new triclinic polytype, with an ionic arrangement closely related to that in the accepted structure.
The company invested $3.4 million in the project, which included the installation of an eight-color polytype offset printing press and which will include a Breyer coextrusion line, Combitool tube heading machine and five-color Dubuit silk-screening machine within the next six months.