Korth Kristalle GmbH

Refractive Index


Magnesium Oxide (MgO)

Properties (MgO)   
Transmission Range (50% of total transmission)  0,3 - 7,5µm (thickness 0,49/5,5mm)  
Refractive Index   1,73461 @633 nm  
Reflective Loss  6,6% @3 µm 
Density   3.585 g/cm3  
Melting Point   2832°C  
Molecular Weight   40.311  
Thermal_Conductivity   59 W/(m·K) @300K  
Heat Capacity   923,5 J/(kg·K)  
Thermal Expansion   11 · 10-6 /°C @300 K 
Hardness (Mohs)   692 (Indenter Load 600g) 
Young`s Modulus   248,73 GPa  
Shear Modulus   154.56 GPa 
Bulk Modulus   155 
Rupture Modulus   130 MPa 
Elastic Coefficient   C11 = 294; C12 = 93; C44 = 155 GPa 
Dielectric Constant   9,65 @f = 100 Hz...100 MHz , 298K  
Solubility in Water   0.00062 g/100g 
Crystal Structure   Single crystal, synthetic  
Crystal Type  cubic, NaCl type structure, a0 = 4.212 Å  
Cleavage Planes   (100) 
Poisson Ratio   0.18 
Application   Substrates for superconductive and for pyroelectric thin films, super high temperature crucibles, window material for super high temperature furnaces, optical material  
Remarks   Also available as electrofused material for refractories or ceramics, max. temperature for application: 2000°C, soluble in concentrated acids, ammonium ion, unsoluble in ethanol  

UV transmission spectrum


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