| Nikko Hitech International, Inc.

SrTiO3 characteristics
Crystal structure	Cubic Perovskyte
Lattice constant	0.3905 nm
Melting temperature	2080ºC
Density	5.122 g/cm3	(20ºC)
Dielectric constant	310	(27ºC,1 MHz)
Coefficient of thermal expansion	11.1×10-6 /ºC	(room temperature to 1000℃)
Phase transistion	110 K	(Cubic to quadratic)
Coefficient of refraction	2.407	(at 589 nm)

Standard SrTiO3 Products
Orientation	(100), (110), (111)
Crystal axis tolerance	±0.5º
Dimensions	10 × 10 × 0.5 mm or 15 ×15 ×0.5 mm
Polish	Single or Double side

Nb:SrTiO3 characteristics
Crystal structure	Cubic Perovskyte
Lattice constant	0.3905 nm
Melting temperature	2080ºC
Density	5.122 g/cm3	(20 ℃)
Dielectric constant	310	(27 ℃,1 MHz)
Coefficient of thermal expansion	11.1×10-6/ºC	(room temperature to 1000℃)
Phase transistion	110 K	(Cubic to quadratic)
Coefficient of refraction	2.407	(at 589 nm)
Resistivity(Ω•cm) (typical example)	7 – 10×10-2 3 – 7×10-3	(Nb: 0.05 wt%) (Nb: 0.50 wt%)

Standard Nb:SrTiO3 Products
Orientation	(100), (110), (111)
Crystal axis tolerance	±0.5º
Dimensions	10 × 10 × 0.5 mm or 15 ×15 × 0.5 mm
Polish	Single or Double side

Al2O3 (Sapphire) characteristics
Crystal structure	Corundum 3-directional
Lattice constant	a=0.4759 nm c=1.299 nm
Melting temperature	2040ºC
Density	3.987 g/cm3
Dielectric constant	(in c direction) 9.41	(30 GHz)
Dielectric loss	(in c direction) 3×10-5	(30 GHz)
Pressure strength	(in a direction) 6.93×10-6/ºC (in c direction) 7.63×10-6/ºC (in a direction) 8.89×10-6/ºC (in c direction) 9.97×10-6/ºC	(200ºC) (1000ºC)

Standard Al2O3 (Sapphire) products
	Al2O3
Orientation	(0001), (01-12), (11-20)
Size	10 ×10 × 0.5mmt , 15 × 15 × 0.5mm 、 50.8 diameter × 0.325 mm, 50.8 diameter × 0.425 mm 76.2 diameter × 0.425 mm, 76.2 × 0.525 mm
Polish	Single／Double

NdGaO3 characteristics
Crystal structure	Prismatic
Lattice constant	a=0.5431 nm, b=0.5499 nm, c=0.7710 nm
Melting temperature	1650ºC
Density	7.56 g/cm3
Dielectric constant	20 – 25	(27ºC,1MHz)
Coefficient of thermal expansion	10×10-6/ºC

Standard NdGaO3 Products
Orientation	(100), (001), (110)
Crystal axis tolerance	±0.5º
Dimensions	10 × 10 × 0.5 mm
Polish	Single or Double side
Roughness	Ra ≤ 1.0 nm Rmax ≤ 5.0 nm
Flatness	≤ λ (λ = 632.8 nm)
Note: NdGaO3 available in up to 2-inch diameter

TiO2 Characteristics
Crystal structure	Quadratic
Lattice constant	a=0.459 nm c=0.295 nm
Melting temperature	1840 ºC
Density	4.252 g/cm3	(20 ºC)
Dielectric constant	113	(1 MHz)
Coefficient of thermal expansion	(in a direction)        7.81×10-6 / ºC (In b direction) 10.1×10-6 / ºC	(30–400 ºC) (30–400 ºC)
Band gap	3.0 eV
Coefficient of refractance	no=2.5490 ne=2.8226	(at 706.5 nm)