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 ?
Currently, power diodes based on silicon carbide made by diffusion technology have maximal breakdown voltage ~700 V for 4H polytype and ~1000 V for the 6H polytype of silicon carbide [12, 13].
Dobrotvorskaya, "Low-temperature production of silicon carbide films of different polytypes," Semiconductors, vol.
The value 7.16 [Angstrom] for the kaolinite monoclinic polytypes dickite (2[M.sub.1]) and nacrite (2[M.sub.2]) counts for [d.sub.002].
They then present chapters on polytypes and polytype categories and the application of modularity to structure description and modeling, finally concluding with a chapter that develops the theory of twinning for solving structural problems (with worked examples).
I've quoted the last term because--as you can learn from your new 2008 Fleischer's Glossary--"arsenpolybasite" has been discredited as a species; examples of "arsenpolybasite" may be either one of two pearceite polytypes, called pearceite-M2a2b2c and pearceite-T2ac.
Polytypes with n = 3, 4, 5, 6, and 7 were prepared as single crystals by the flux method (28).
In this approach we have the usual collection of monomorphic types or monotypes (closed under the [right arrow] type constructor and any other type constructors), and a second level of polymorphic types or polytypes, based on the closure of the collection of monotypes under the universal type quantifier [inverted]A.
Two-ordered polytypes with different cell parameters (i.e., the monoclinic "charoite-96" and orthorhombic "charoite-90") were identified inside the sample along with other partially ordered and disordered polytypes (i.e., "charoite-2a" and "charoite-d").
Salansky, "A unified structural approach to linear carbon polytypes," Nature, vol.
Adamo, "Density functional theory analysis of the structural and electronic properties of Ti[O.sub.2] rutile and anatase polytypes: performances of different exchange-correlation functionals," Journal of Chemical Physics, vol.