Essential details
MOQ:10
Shipping:Air freight, land freight, sea freight
Product Code:CRY-02
Product Introduction
Product name: Potassium Tantalate (KTaO3) Substrate
Potassium tantalate is a perovskite oxide with a TaO6 octahedral framework and potassium ions sitting in the cavities between octahedra. That structure gives it a combination of ferroelectric, dielectric and optical behaviour that is hard to find in one material.
Key properties:
At room temperature KTaO3 is a cubic ferroelectric; on cooling it passes into an antiferroelectric phase, which is what makes it useful in ferroelectric components. It is transparent from 380 to 4000 nm and has a refractive index of 2.226 at 633 nm, so it serves as an optical window and lens material as well as a substrate. The cubic perovskite structure makes it a candidate substrate for perovskite films and for devices that need a high dielectric constant with low loss.
At room temperature KTaO3 is a cubic ferroelectric; on cooling it passes into an antiferroelectric phase, which is what makes it useful in ferroelectric components. It is transparent from 380 to 4000 nm and has a refractive index of 2.226 at 633 nm, so it serves as an optical window and lens material as well as a substrate. The cubic perovskite structure makes it a candidate substrate for perovskite films and for devices that need a high dielectric constant with low loss.
Typical use:
capacitors and ferroelectric random access memories, optical lenses and windows, and as a substrate for perovskite oxide films. Current work also looks at KTaO3 in photovoltaic and optical communication devices.
Fabrication and options:
Standard sizes are 5×5, 10×10 and 20×20 mm at 0.5 mm thickness, orientation <100>, <110> or <111>, single or double side polished to Ra ≤ 5 Å. Special orientations and sizes are processed to customer requirement, including bevelled wafers with 1° to 45° inclination. Packed in a Class 100 clean bag inside a Class 1000 clean room.
Standard sizes are 5×5, 10×10 and 20×20 mm at 0.5 mm thickness, orientation <100>, <110> or <111>, single or double side polished to Ra ≤ 5 Å. Special orientations and sizes are processed to customer requirement, including bevelled wafers with 1° to 45° inclination. Packed in a Class 100 clean bag inside a Class 1000 clean room.
Ordering:
Minimum order 10 pcs. Send the orientation, size, thickness and surface finish; special orientations are quoted from the drawing.
Minimum order 10 pcs. Send the orientation, size, thickness and surface finish; special orientations are quoted from the drawing.
Product Parameter：
Material | Potassium tantalate, KTaO3 (KT)
Space group | Pm3m
Lattice constant | 0.3984 nm
Melting point | 1352.2 °C
Density | 7.025 g/cm3
Mohs hardness | 6
Growth method | Czochralski (VCZ)
Refractive index | 2.226 at 633 nm, 2.152 at 1539 nm
Thermal expansion | 4.027 × 10-6 /K
Specific heat capacity | 0.378 J·K-1·g-1 at room temperature
Transparent band | 380-4000 nm
Standard orientation | <100>, <110>, <111>
Standard size | 20×20×0.5 mm, 10×10×0.5 mm, 5×5×0.5 mm
Polishing | Single side or double side, Ra ≤ 5 Å
Customisation | Special orientation and size processed to customer requirement
Packing | Class 100 clean bag, Class 1000 clean room
Minimum order | 10 pcs
Space group | Pm3m
Lattice constant | 0.3984 nm
Melting point | 1352.2 °C
Density | 7.025 g/cm3
Mohs hardness | 6
Growth method | Czochralski (VCZ)
Refractive index | 2.226 at 633 nm, 2.152 at 1539 nm
Thermal expansion | 4.027 × 10-6 /K
Specific heat capacity | 0.378 J·K-1·g-1 at room temperature
Transparent band | 380-4000 nm
Standard orientation | <100>, <110>, <111>
Standard size | 20×20×0.5 mm, 10×10×0.5 mm, 5×5×0.5 mm
Polishing | Single side or double side, Ra ≤ 5 Å
Customisation | Special orientation and size processed to customer requirement
Packing | Class 100 clean bag, Class 1000 clean room
Minimum order | 10 pcs
