Potassium tantalate (or KTaO3) single crystal has a perovskite crystal structure, characterized by its cubic lattice arrangement of potassium, tantalum, and oxygen ions. This structure confers upon KTaO3 a series of intriguing properties including excellent ferroelectric properties, high dielectric constant, and low dielectric loss, transmittance to the VIS and NIR spectra, and high melting point. KTaO3 finds versatile applications as ferroelectric devices, substrates for epitaxial growth of thin films of other perovskite materials, such as complex oxides and high-temperature superconductors, or optical components.

The ferroelectric behavior of KTaO3 at low temperatures enables reversible polarization switching under an external electric field, a trait exploited in ferroelectric memory devices. In addition, KTaO3 possesses a wide transmission range spanning from ultraviolet to infrared wavelengths, making it suitable for optical applications. Its piezoelectric properties further extend its utilities in sensors, actuators, and acoustic devices.

Shanghai North Optics offers KTaO3 crystals and wafers, the unique properties of our KTaO3 crystals and substrates render them indispensable in a diverse range of applications including high-performance capacitors, microwave devices, and ferroelectric memories, waveguides, substrates for epitaxial growth, etc.