Materials Synthesis Search More

Moissanite

IMA-Approved Mineral Species


Properties and Data
Physical Properties
Composition
SiC
Chemical Name
Silicon Carbide
Molecular Weight
40.096 g/mol
Density
3.16 - 3.24 g/cm3
Mohs Hardness
9.25 - 9.5
Decomposition Point
2730 °C (4946 °F)
Crystal System
Hexagonal
Optical Properties
Type
Uniaxial (+)
Refractive Index
nω = 2.616 - 2.757
nε = 2.654 - 2.812
Dispersion Factor
0.104
Birefringence
δ = 0.038 - 0.043

Additional Properties
Inherent
Semiconductive
Thermoluminescent
Thermochromic
Additional Information
Otherwise known by Carborundum

Material articles have temporarily been disabled for renewal and polishing.
Variants and Types
Intrinsic
Intrinsic
Color: Colorless
4H SiC
4H SiC
Color: Yellow, Green, Blue
Cause: Hexagonal 4-Layer Structure
Used for N-Type, P-Type Semiconductors, and Semi-insulators
6H SiC
6H SiC
Color: Yellow, Green
Cause: Hexagonal 6-Layer Structure
Used for N-Type, P-Type Semiconductors, and Semi-insulators
3C SiC
3C SiC
Color: Gray, Dark Blue, Dark Red
Cause: Cubic 3-Layer Structure
Used for N-Type, P-Type Semiconductors
N-Type SiC
N-Type SiC
Color: Yellow, Green, Blue, Brown
Cause: Nitrogen Ions
Effect: Pleochroism
Used for N-Type Semiconductors
SI SiC
SI SiC
Cause: Vanadium Ions
Used for Semi-insulators
Unnamed Variant
Unnamed Variant
Color: Pink, Magenta, Purple
Cause: Hydrogen Ions
P-Type SiC
P-Type SiC
Color: Blue
Cause: Aluminium and Boron Ions
Used for P-Type Semiconductors
Production and Synthesis
High-Pressure High-Temperature Synthesis
HPHT
Involves supplying extreme pressures / temperatures on ingredients or a seed crystal to produce larger crystals, which can then be used as seeds again or simply used on their own.
Chemical Vapor Deposition
CVD
Involves leeching specialty gasses onto a heated / pressurized environment with seed crystals. Slowly builds up atomic layers of material until a solid crystal is produced.
Sintering and Annealing
Sintering and Annealing
An umbrella of methods involving heat treatment or controlled heating / burning to form solids and crystals. Often used for making polycrystalline media or annealing monocrystalline media.
References
REFERENCES





Page Generated with Material Database Revision 0.3.2
Copyright (c) 2024 - Taylor Schneider

About Syndat