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SrLaAlO4 (001) 5x5x0.5mm, 1SP


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Item Number: SLAOb050505S1

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50 or moreUSD$46.55
Specifications:
  • Single crystal SrLaAlO4 
  • Size: 5mm x 5mm x 0.5mm
  • Orientation: (001)
  • Orientation tolerance + / - 0.5°
  • Surface Roughness <10 Å
  • Edge alignment available on request
  • Polish: one side EPI polished
Features:
  • Good lattice match with perovskite structure superconductors
  • Stable structure with much less defects than SrTiO3
  • Low dielectric constant suitable for microwave or high frequency application
Typical Properties

Purity

 99.99%

Color

Light Brown

Crystal Struture

Tetragonal

Lattice Constant

a = b = 3.756 A   C = 12.636 A

Density

 5.92 g / cc

Melt Point

1650 oC

Thermal Expansion Coeff.

12 ppm / oC

Dielectric Constant 

16.81 at a axis 20.02 at c axis

 Comparison of SrTiO3 - LaAlO3 - SrLaAlO3 

Properties/Crystal

SrTiO3

LaAlO3

SrLaAlO4

Structure

Cubic

Rhombohedral at 25 oC
   Cubic at > 435 oC            

Tetragonal

Lattice Constant

a=3.905

a=3.821 A

a=b=3.756 A     c= 12.636

mismatch to YBCO (a=3.9)

+0.12%

-2.0%

-3.7%

Dielectric Constant

~300

~ 25 

~ 17

Grown Method

Vernuil

CZ

CZ

Thermal expansion

10.4 (x10-6oC)

10 (x10-6oC)

12 (x10-6oC)

Melting point

2080

2080 oC        

1650 oC

Density

5.175 g/cm3

6.52 g/cm3

5.92 g/cm3

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

 

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Notices
1. Prices listed online are valid for the US market and who pay by credit card only. There will be extra charges for shipping & handling. Price various from country to country.
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