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SBN & KNSBN Crystal



Main Specification
Material SrxBa1-xNb2O6 (SBN)
0.25  £ X  £ 0.75
Crystal Structure Tetragonal  Point group 4mm
Lattice parameters a = 3.946 Å  c = 12.46 Å
  KNSBN SBN(75) SBN(60)
Melting Point   1470 - 1490 1470 - 1490
Curie temperature 150-250 40 80
Spontaneous polarization ~30×10-12c/m2 17×10-12c/m2  
Dielectric constant e11~360 500 450
e32 ~120 340 900
Piezoelectric coefficient (m/v) d33~270 --- 130
d15~400 --- 140
Pyroelectric coefficient   0.28 μC × cm-2 × K-1 0.065 μC × cm-2 × K-1
Optical index no~2.31 2.3117 2.3123
ne ~2.28 2.2987 2.2733
Transmission Electro-Optic Coefficients Y 1340 420
40 42
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Photorefractive Parameters
  KNSBN:Cu KNSBN:Co KNSBN:Ce
Two-wave coupling gain(cm-1) 20 15 ---
Wavelength --- 450-700nm ---
Sensitivity (cm2/J) 43011 43011 43012
SPPC reflectivity(%) 30-68 20-70 20-45
SPPC response time (s) <10 <20 <20
Resolution (line pair/mm) >30 >20 ---
Storage time --- 1-2 months ---
Holographic response time(ms) --- <200  ---