Strontium barium niobate

Strontium barium niobate
Identifiers
CAS Number	x=0.5: 37185-09-4;
3D model (JSmol)	x=0.5: Interactive image;
EC Number	x=0.5: 253-383-3;
PubChem CID	x=0.5: 21862943;
CompTox Dashboard (EPA)	x=0.5: DTXSID70190669;
	InChI InChI=1S/Ba.4Nb.12O.Sr/q+2;;;;;;;;;;;;;4*-1;+2 Key: DKDQMLPMKQLBHQ-UHFFFAOYSA-N;
	SMILES x=0.5: [O-][Nb](=O)=O.[O-][Nb](=O)=O.[O-][Nb](=O)=O.[O-][Nb](=O)=O.[Sr+2].[Ba+2];
Properties
Chemical formula	(Srx,Ba1−x)Nb2O6 for 0.32≤x≤0.82
Density	5.24-5.39 g/cm3
Melting point	1,427–1,480 °C (2,601–2,696 °F; 1,700–1,753 K)
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H332
Precautionary statements	P261, P264, P270, P271, P301+P312, P304+P312, P304+P340, P312, P330, P501
Structure
Crystal structure	Tetragonal
Space group	P4bm
Point group	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 the chemical compound Sr_xBa_1−xNb₂O₆ for 0.32≤x≤0.82.

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. This has been attributed to positional disorder of the A-site cations alongside incommensurate oxygen octahedral tilting

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

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