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LSAT Single Crystal Substrate, (100), DSP (10 pcs/box)
Product Type: LSAT single crystal substrate
Research-grade laboratory product
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LABORATORY PROCUREMENT SUPPORT
For material matching, specification review, model selection or configuration confirmation, contact our technical sales team.
E-MAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This substrate requires material matching to the target thin-film or device workflow to ensure lattice and thermal compatibility. Orientation tolerance and surface roughness must be verified before use to maintain epitaxial quality.
- Lattice Matching: Confirm lattice constant match between substrate and deposited film to minimize strain.
- Thermal Expansion: Align thermal expansion coefficients of substrate and film to prevent cracking during thermal cycling.
- Surface Quality: Verify surface roughness below 5 Å to ensure adequate film nucleation.
- Orientation: Confirm orientation tolerance within ±0.5° to maintain crystallographic alignment.
What is the lattice constant of the LSAT (100) single crystal substrate and why is it critical for epitaxial growth?
The LSAT (100) substrate has a cubic lattice constant of a = 3.868 Å, as stated in the technical specifications. This value is crucial for determining the lattice mismatch with target thin-film materials, such as perovskite oxides, to minimize strain and defects in epitaxial layers. The orientation tolerance of ±0.5° further ensures precise alignment during deposition.
What is the surface roughness of the LSAT (100) substrate and how does it impact thin-film quality?
The LSAT substrate is specified with a surface roughness Ra < 5Å, as per the product description. Such low roughness is essential for achieving high-quality epitaxial thin films by reducing nucleation sites for defects and ensuring uniform film thickness. The DSP (double-sided polished) finish also provides a smooth surface for both sides, facilitating handling and characterization.
What are the key thermal and mechanical properties of the LSAT substrate that influence device fabrication?
The LSAT material has a melting point of 1840°C, a hardness of 6.5 Mohs, and a thermal expansion coefficient of 10 × 10⁻⁶ /K, as specified. These properties dictate the substrate's stability during high-temperature deposition processes and its compatibility with subsequent thermal cycling. The density of 6.74 g/cm³ also affects handling and mounting in vacuum systems.
LSAT (La,Sr)(Al,Ta)O3 single crystal substrate with (100) orientation and DSP finish, providing twin-free cubic structure, high melting point (1840°C), and surface roughness Ra <5Å for thin-film epitaxy applications.
Positive
- High melting point for thermal processing: With a melting point of 1840°C, the substrate withstands high-temperature deposition and annealing steps common in oxide thin-film growth.
- Twin-free, no visible domains: The substrate is explicitly twin-free with no visible domains, ensuring uniform crystallographic orientation and reducing defect nucleation in epitaxial layers.
Trade-offs
- Orientation tolerance requires alignment: The ±0.5° orientation tolerance demands careful alignment during substrate mounting and film deposition to maintain epitaxial quality.
- Material compatibility must be verified: The specific lattice constant and chemical composition of LSAT necessitate confirmation of match with the target thin-film or device workflow before quotation.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
