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Superconductor Substrates

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Lanthanum Aluminate
Magnesium Oxide
Neodymium Gallate
Sapphire
Strontium Titanate
Spinel
YSZ
 

TYPICAL PROPERTIES
OF SINGLE CRYSTAL SUBSTRATES

Material Crystal
  Type 		 Lattice
Const.
A
a		 Lattice
Const.
A
c		 Density
(g/cm3)		 M Pt
Celsius		 T E
coef
10^-6		 Dielectric
Constant		 Loss
Tangent @ 10GHz
Al203 Hex 4.758 12.991 3.97 2030 7.5 9.3 9x10^-3
MgO Cubic 4.216 3.58 2800 12.8 9.8
MgAl204 Cubic 8.083 3.6 2130 7.45
ZnO Hex 3.252 5.213 5.605 1975 2.9
SrTiO3 Cubic 3.905 5.12 2080 10.3 300 2 x 10^-2
LaAlO3 Rhom 3.79 13.11 6.51 2180 9.2 24.5
NdGaO3 Ortho 5.43 7.71 7.57 1600 4.5 20 3 x 10^-3
SrLaALO3 Tetrag 3.756 12.63 1348 4.65 16.8 6 x 10^-4
SrLaGaO3 Tetrag 3.84 12.68 1238 6 300
YtAlO3 Ortho 5.176 5.815 6.1 1870 5.59 16-20 10 x 10^-4
YSZ Cubic 5.41 5.8 2500 10.3 27
(LaAlO3).3-
(Sr2AlTaO8).7		 3.868 6.74 1840 10 22

Cryogenic Society of America

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