| Catalogue Code | IN-SrTi-01 |
| CAS No. | 12060-59-2 |
| Chemical Formula | SrTiO3 |
| Compound Name | Strontium Titanate |
| Surface Area (m2/g) | >10 |
| Particle size d50 (μm) | N/A |
| Purity (%) | >99.9 |
| Crystallite Size (nm) | ~100 |
Introduction
Strontium Titanate, SrTiO3, is one of the perovskite-structured oxides that has been specifically interesting for materials science and condensed matter physicists due to its extraordinary electronic, optical, and dielectric properties. It is a wide bandgap semiconductor with high dielectric constants, positioning it well for applications in electronic devices, ferroelectrics, and superconductors. The more excellent utility in memory devices, sensors, and potentially quantum computing platforms arises with the unique phase transition at low temperatures and ease of doping and manipulating its properties.
Properties
The following table contains the critical Strontium Titanate properties:
| Property | Description |
| Appearance | Powder |
| Molar mass | ≈183.94 g/mol |
| Bandgap | Approximately 3.2 eV |
| Ferroelectricity | Exhibits ferroelectric properties below ~105 K with spontaneous polarization. |
| Optical Transparency | Good |
| Thermal Stability | Stable at high temperatures |
| Dielectric Constant | High (exceeding 300 at room temperature) |
| Thermal Conductivity | 5.0 W/m·K (at room temperature) |
Application
Strontium titanate (SrTiO3) has a wide range of applications in various sectors. Some of the essential applications are discussed below:
- Electronics:
- They are used in capacitors and transistors.
- It serves as a substrate for multiple electronic devices.
- Ferroelectrics:
- It is employed in ferroelectric devices and memory applications.
- Superconductors:
- It acts as a substrate for high-temperature superconductors.
- It can exhibit superconductivity when doped.
- Photovoltaics:
- It is utilized in thin-film solar cells due to its semiconductor properties.
- Sensors:
- It is applied in gas and pressure sensors for its sensitive electrical properties.
- Photonic Devices:
- It is used in optical waveguides, lenses, and other photonic components.
- Dielectric Materials:
- Strontium titanate nanoparticles are dielectric materials in high-frequency applications like RF devices.
- Quantum Computing:
- Investigated for potential applications in quantum computing and spintronics.
FAQs
Answere: Strontium titanate, called SrTiO₃, is a perovskite-structured oxide with notable electronic, optical, and dielectric properties, which have led to many technological applications.
Answere: The fundamental properties include a high dielectric constant, wide bandgap (approximately 3.2 eV), ferroelectric behavior below 105K, and potential superconductivity when doped.
Answere: SrTiO₃ is generally considered safe to handle, but as with any chemical, proper safety precautions should be taken during handling and processing.
Answere: Yes, SrTiO₃ is optically transparent in the visible range, making it useful in photonic applications.
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