Strontium Titanate Single Crystal Substrate Description
SrTiO3 single crystal has its lattice parameters match most materials with a Perovskite crystal structure, and therefore it is a popular crystal substrate for epitaxial growth of many oxide thin films. It is commonly used as substrate material for superconductor thin films, because Strontium Titanate (SrTiO3) and Y-Ba-Cu-O system (a = 3.89 A) have similar values in the lattice constant.
Strontium Titanate Single Crystal Substrate Specifications
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Growth method
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Vernue (flame) method
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Crystal structure
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Cubic
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Lattice constant
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a = 3.905 A
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Density (g/cm3)
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5.11
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Melting point (°C)
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2080
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Hardness
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6-6.5 Mohs
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Dielectric constants
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300 at room temperature
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Purity
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＞99.9
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Chemical stability
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Insoluble in water
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Thermal expansion coefficient (/K)
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10.4 x 10-6
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Loss Tangent at 10 GHz
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~5x10-4 @ 300K, ~3 x10-4 @77K
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Package
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Packed in class 100 grade plastic bag in class 1000 clean room
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Strontium Titanate Single Crystal Substrate Applications
Widely used in the research of high-temperature superconducting films. It is also widely used in special optical windows and high-quality sputtering targets.
Strontium Titanate Single Crystal Substrate Packaging
Our Strontium Titanate Single Crystal Substrate is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
FAQs
Q1 Why is SrTiO3 a popular choice for single crystal substrates?
SrTiO3 is a popular choice due to its excellent lattice match with many oxide materials, its high dielectric constant, and its ability to support complex epitaxial growth. Additionally, it is highly stable under high temperatures and has a wide bandgap, which is crucial for a variety of advanced electronics applications.
Q2 What are the key properties of Strontium Titanate Single Crystal Substrates?
Key properties include:
- Lattice structure: Cubic crystal system with a perovskite structure
- Dielectric constant: High relative permittivity (about 300 at room temperature)
- Thermal stability: Excellent performance at high temperatures
- Electrical properties: High-quality insulating properties, ideal for semiconductor devices
- Optical properties: Transparent in the infrared spectrum
Q3 How do Strontium Titanate Substrates support epitaxial growth?
SrTiO3 substrates provide a lattice structure that closely matches the crystal lattice of many materials, making it an excellent choice for epitaxial growth. This alignment helps to reduce strain and defects in thin films, improving the overall quality and performance of the deposited layers.
