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SrLaAlO4 crystal is a promising substrate material for high Tc superconduct film and other oxide films to replace SrTiO3 crystal in better quality and lower cost. MTI produces SrLaAlO4 crystal and substrate in house upto 35 mm. We strongly suggest customer use SrLaAlO4 substrate instead of SrTiO3, if possible, to improve quality of expitaxy film quality. Please see the table below for Comparison of SrTiO3 - LaAlO3 - SrAlO4 Crystal
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Properties/Crystal |
SrTiO3 |
LaAlO3 |
SrLaAlO4 |
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Structure |
Cubic |
Cubic at >435oC |
Tetragonal |
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Lattice Constant |
a=3.905 |
a=3.821 A |
a=b=3.756 A c= 12.630 |
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mismatch to YBCO a=3.9 |
+0.12% |
-2.0% |
-3.7% |
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Dielectric Constant |
~300 |
~ 25 |
~ 17 |
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Grown Method |
Vernuil |
CZ |
CZ |
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Melting point oC |
2100 |
2080 |
1650 |
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Density |
5.175 g/cm3 |
6.52 g/cm3 |
5.92 g / cc |
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Max. Crystal size |
30 mm dia. |
75 mm dia |
35 mm dia |
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Crystal quality |
Wide rocking curve due to dislocation density |
Visible twin due to phase transition around 400 oC |
Narrow rocking curve, no twins, less defects |
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Crystal cost |
Higher |
Lower |
Medium | Pleasse clcik here to download more technical data for SrLaAlO4 crystal. |
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MS&T 2012, Booth# 536, Oct.9-10, 2012, Pittsburgh, PA, USA
 Nanotech 2012, Booth# 712, June 19-20, 2012, Santa Clara, California
 MRS 2012 Spring Meeting, Booth# 321, Apr. 10-12, 2012, San Francisco, CA , USA
 TMS 2012, Booth# 330, Mar. 12- 14, 2012, Orlando, FL, USA
 APS 2012, Booth#211, Feb.27-29, 2012, Boston, MA, USA
 AABC 2012, Booth #809, Feb 6-10, 2012,Orlando, FL, USA
 36th ICAE/ICACC 2012, Booth#214, Jan.24-25, 2012, Daytona Beach, FL, USA
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Notices
1. The price listed on line is valid for US market and who pay by credit card only. There will be extra cost for shipping and handling. The price is different from country to country
2. We may add extra cost for paper order and net 30 term due to extra labor cost
3. The price is subject to change without notice
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