Strontium barium niobate
From Wikipedia, the free encyclopedia
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3D model (JSmol) |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| (Srx,Ba1−x)Nb2O6 for 0.32≤x≤0.82 | |
| Density | 5.24-5.39 g/cm3 [1] |
| Melting point | 1,427–1,480[2] °C (2,601–2,696 °F; 1,700–1,753 K) |
| Hazards | |
| GHS labelling: | |
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| Warning | |
| H302, H332 | |
| P261, P264, P270, P271, P301+P312, P304+P312, P304+P340, P312, P330, P501 | |
| Structure | |
| Tetragonal | |
| P4bm [1] | |
| 4mm | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Strontium barium niobate is the chemical compound SrxBa1−xNb2O6 for 0.32≤x≤0.82.[1]
Strontium barium niobate is a ferroelectric material commonly used in single crystal form in electro-optics, acousto-optics, and photorefractive non-linear optics for its photorefractive properties.
Strontium barium niobate is one of the few tetragonal tungsten bronze compounds without volatile elements making it a useful system for probing structure-property relations. Strontium barium niobate is a normal ferroelectric for Barium-rich compositions and becomes a relaxor ferroelectric with increasing strontium content.[3] This has been attributed to positional disorder of the A-site cations[4] alongside incommensurate oxygen octahedral tilting.[5]
Strontium barium niobate is one of numerous ceramic materials that are known to exhibit abnormal grain growth, in which certain grains grow very large within a matrix of finer equiaxed grains. This abnormal grain growth (AGG) has significant consequences on the dielectric and electronic performance of strontium barium niobate.[6]
