LaSrAlO₄ Wafer (Lanthanum Strontium Aluminate Wafer)
High-quality perovskite-related substrate for superconducting thin films and oxide epitaxy
Description
🔷 Overview
LaSrAlO₄ (Lanthanum Strontium Aluminate) wafer is a tetragonal single crystal substrate widely used for epitaxial growth of high-temperature superconducting thin films such as YBCO.
It features excellent lattice compatibility and low thermal expansion, enabling high-quality thin film growth with reduced stress and improved crystallinity.
🔷 Key Features
• Tetragonal crystal structure with high structural stability
• Excellent lattice matching for YBCO and oxide thin films
• Low thermal expansion coefficient (reduced film stress)
• No phase transition from melting to room temperature
• Epi-ready surface with ultra-low roughness (< 0.5 nm)
🔷 Specifications
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Product: |
Single crystal LaSrAlO4 wafer |
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Purity: |
> 99.99% |
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Material property: |
Crystal structure: Tetragonal |
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Lattice constant: a = 3.756 Å, c = 12.63 Å |
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Density: 5.92 g/cm3 |
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Melting point: 1650 °C |
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Hardness: 6-6.5 mohs |
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Dielectric constants: 16.8 |
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Growth method: CZ |
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Dimension: |
• 5 × 5 mm • 5 × 10 mm • 10 × 10 mm • 20 × 20 mm • φ1″ x 0.5mm |
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Thickness: |
• 0.1 mm • 0.5 mm • 1.0 mm • 2.0 mm • Other sizes customizable |
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Orientation: |
• <100> ± 0.5° • <001> ± 0.5° • other off-angle |
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Polishing: |
• Fine ground • Single side epi-polished • double side epi-polished |
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Surface roughness: |
< 0.5 nm |
🔷 Applications
• High-temperature superconducting films (e.g. YBCO)
• Oxide thin film epitaxy
• Ferroelectric and functional materials
• Strain engineering research
• Advanced quantum materials
🔷 Customization Options
• Orientation and off-cut customization
• Thickness and dimension customization
• Double-side polishing (DSP) available
• Epi-ready surface treatment
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