Dielectric and ferroelectric properties of SrBi[sub 4]Ti[sub 4]O[sub 15] single crystals

Irie, Hiroshi; Miyayama, Masaru
July 2001
Applied Physics Letters;7/9/2001, Vol. 79 Issue 2
Academic Journal
SrBi[sub 4]Ti[sub 4]O[sub 15] single crystals were grown, and their dielectric and ferroelectric properties were investigated along the a(b) axis and c axis, separately. The dielectric permittivity at 1 MHz was 1900 along the a(b) axis at the Curie temperature of 520 °C. This value was ten times higher than that along the c axis. With respect to the ferroelectricity, the saturated remanent polarization was 29 μC/cm2 and the saturated coercive field was 26 kV/cm along the a(b) axis under an electric field of 59 kV/cm, and ferroelectricity was not observed along the c axis. © 2001 American Institute of Physics.


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