Strontium barium niobate

Strontium barium niobate is the chemical compound SrxBa1−xNb2O6 for 0.32≤x≤0.82.[1]

Strontium barium niobate
Identifiers
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)
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).
Infobox references

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]

References
  1. "Structure of strontium barium niobate SrxBa1−xNb2O6 (SBN) in the composition range 0.32 ≤ x ≤ 0.82". Acta Crystallographica Section B. 62: 960–965. 2006. doi:10.1107/S0108768106038869.
  2. "Physicochemial Study of the SrNb2O6-BaNb2O6 System". Zhurnal Fizicheskoi Khimii. 51.11: 2948–2950. 1979.
  3. "Anisotropic Glasslike Characteristics of Strontium Barium Niobate Relaxors". Journal of Applied Physics. 76: 490–496. 1994. doi:10.1063/1.357100.
  4. "A Study of Positional Disorder in Strontium Barium Niobate". Journal of Materials Science. 31: 1435–1443. 1996. doi:10.1007/bf00357850.
  5. "Effects of A1/A2-sites Occupancy upon Ferroelectric Transition in (SrxBa1-x)Nb2O6 Tungsten Bronze Ceramics". Journal of the American Ceramic Society. 97: 507–512. 2014. doi:10.1111/jace.12659.


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