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Elmet Technologies

Zinc Sulfide, ZnS, Sphalerite (Zincblende)
Categories: Ceramic; Sulfide/Chalcogenide; Other Engineering Material; Semiconductor

Key Words: Chalcogenide; Semiconductor
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Physical PropertiesMetricEnglishComments
Density 4.079 g/cc0.1474 lb/in³
a Lattice Constant 5.4093 Å5.4093 Å
Formula Units/Cell (Z) 44
Molecular Weight 97.46 g/mol97.46 g/mol
 
Mechanical PropertiesMetricEnglishComments
Knoop Microhardness 17801780N/mm²
Hardness, Mohs 3.83.8
Modulus of Elasticity 75.0 GPa10900 ksiCrystal structure not specified.
Flexural Strength 103 MPa14900 psi4-pt. test; Crystal structure not specified.
Poissons Ratio 0.270.27Crystal structure not specified.
Shear Modulus 29.5 GPa4280 ksiCalculated
 
Electrical PropertiesMetricEnglishComments
Magnetic Susceptibility -0.00000990-0.00000990Atomic (cgs)
Dielectric Constant 8.98.9
Band Gap 3.54 eV3.54 eV
Electron Mobility, cm²/V-s 180180
Hole Mobility, cm²/V-s 5.05.0at 400°C
 
Thermal PropertiesMetricEnglishComments
Heat of Fusion 390 J/g168 BTU/lbCrystal structure not specified.
CTE, linear 6.36 µm/m-°C
@Temperature 20.0 °C
3.53 µin/in-°F
@Temperature 68.0 °F
Specific Heat Capacity 0.472 J/g-°C0.113 BTU/lb-°F
Thermal Conductivity 25.1 W/m-K174 BTU-in/hr-ft²-°F
Melting Point 1827 °C3321 °FTransition at 1012°C
Heat of Formation 477 kJ/mol477 kJ/mol
Debye Temperature 257 °C495 °F
 
Optical PropertiesMetricEnglishComments
Refractive Index 2.3562.356
IR Transmittance 72 %72 %peak. absorption coefficient 0.1 at 8 µm/ 0.4 at 12 µm. Crystal structure not specified.
 
Descriptive Properties
CAS Number1314-98-3
ColorGray white
Crystal StructureCubicSphalerite Structure - Space Group F(-4)3m

References for this datasheet.

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DSEN74 / 3083

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