|
|
SrLaAlO4 crystal is a promising substrate material for high Tc superconduct film and other oxide films to replace SrTiO3 crystal with better quality and lower cost. MTI produces SrLaAlO4 crystal and substrate in house up to 35 mm. We strongly recommend to customers to use SrLaAlO4 substrate instead of SrTiO3, if possible, to improve expitaxy film quality. Please see the table below for comparison of SrTiO3 - LaAlO3 - SrAlO4
Crystal.
|
Properties/Crystal
|
SrTiO3
|
LaAlO3
|
SrLaAlO4
|
|
Structure
|
Cubic
|
Cubic at >435oC
|
Tetragonal
|
|
Lattice Constant
|
a=3.905
|
a=3.821 A
|
a=b=3.756 A c= 12.630
|
|
mismatch to YBCO a=3.9
|
+0.12%
|
-2.0%
|
-3.7%
|
|
Dielectric Constant
|
~300
|
~ 25
|
~ 17
|
|
Grown Method
|
Vernuil
|
CZ
|
CZ
|
|
Melting point oC
|
2100
|
2080
|
1650
|
|
Density
|
5.175 g/cm3
|
6.52 g/cm3
|
5.92 g / cc
|
|
Max.
Crystal size
|
30 mm dia.
|
75 mm dia
|
35 mm dia
|
|
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
|
|
Crystal cost
|
Higher
|
Lower
|
Medium
|
|
|
| | |
|
Your cart is empty.
Please clear the browsing history before ordering the product. Otherwise, availability and price are not guaranteed. | |
| | |
|
|
MS&T 2012, Booth# 536, Oct.9-10, 2012, Pittsburgh, PA, USA
 Nanotech 2012, Booth# 712, June 19-20, 2012, Santa Clara, California
 ECS 221st, Booth#208, May 7-9, 2012, Seattle,WA, USA
 SVC TechCon2012, Booth# 739, May 1- 2, 2012, Santa Clara, California
|
|
|
|
|
|
|
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
|
|
|