Description
Barium strontium titanate(BST)(BaSrTio3) Powder
MF: BaSrTio3
Appearance: White Powder
Application:
Barium strontium titanate is through the barium titanate (BaTiO3)
and strontium titanate (SrTiO3) high temperature solid instead
should be, is SrTiO3 BaTiO3 and the crystallology infinite. BaTiO3
in ion displacement polarization and electronic displacement
polarization under the interaction of crystal a highly polarized
state, has the high dielectric constant. But for temperature has
significant BaTiO3 dependence.Â
SrTiO3 as a new multifunctional BaTiO3 ceramic materials, and has
better stability than the lower temperature, dielectric loss Angle
(********4), but the dielectric constant (******0) but with BaTiO3
(2 * **3 **4) is a lot. In order to overcome the disadvantages of
their two materials, usually with Sr, Ba BaxSr1 formed to replace
part-xTiO3 system by adjusting the material that can be satisfied
value to x the performance requirements of capacitors ceramic
material.
Barium titanate structure as shown in figure, barium strontium
titanate (BaxSr*-xTiO3) structure and similar, typical also of
perovskite phase structure, just Sr2 + partially replaced Ba2 +.
Larger Ba2 Sr2 + +, and the position of the Angle of occupied,
smaller Ti4 + occupy body the position of the heart, six surfaces
by heart is O*-is held. These oxygen ion form oxygen octahedron,
Ti4 + in the center. The crystals can be considered by oxygen
octahedron were connected to each vertex, oxygen octahedron space
between the Ba2 + / Sr2 + occupy, so Ba2 + / Sr2 Ti4 + + and the
coordination number *2 and 6 respectively.
