Jun 5 2013
Applications of nanoparticles have dominated numerous fields such as pharmaceutical, cosmetics, biomedicine and electronics. This article will elaborate on the properties and applications of strontium titanate nanoparticles.
Strontium titanate (SrTiO3) nanoparticles are black spherical particles having a high surface area. They are available in coated, dispersed, high and ultra high purity forms. They are known by other names such as strontium titanium trioxide, strontium titanium oxide and strontium dioxido(oxo)titanium. Strontium belongs to Block S, Period 5 while titanium belongs to Block D, Period 4 and oxygen belongs to Block P and Period 2 of the periodic table.
Chemical Properties
The following tables list the chemical properties of strontium titanate.
| Chemical Data |
| Chemical symbol |
SrTiO3 |
| CAS No |
12060-59-2 |
| Group |
Strontium 2
Titanium 4
Oxygen 16 |
| Electronic configuration |
Strontium [Kr] 5s2
Titanium [Ar] 3d2 4s2
Oxygen [He] 2s2 2p4 |
| Chemical Composition |
| Element |
Content (%) |
| Strontium |
47.7% |
| Titanium |
26.1% |
| Oxygen |
26.2% |
Physical Properties
Strontium titanate nanoparticles appear in the form of a black powder having a spherical surface area. The table below provides the physical properties of these nanoparticles.
| Properties |
Metric |
Imperial |
| Density |
4.81 g/cm3 |
0.173 lb/in3 |
| Molar Mass |
183.49 g/mol |
- |
Thermal Properties
The thermal properties of strontium titanate nanoparticles are given in the table below.
| Properties |
Metric |
Imperial |
| Melting Point |
2080°C |
3776°F |
| Boiling Point |
>3000°C |
>5432°F |
Applications
Given below are some of the chief applications of strontium titanate:
- In tunable microwave capacitors
- Flat panel displays, field emission displays
- Microwave solitons, PTC thermistors and varistors
- Magnetic field insensitive thermometers
- Ultralow-temperature scanning microscopes
- Semiconductive ceramics
- Pyroelectric far-infrared detectors
- Alloy and catalyst applications.