Growth and characterization of ferroelectric SrBi2Ta2O9 single crystals via high-temperature self-flux solution method

authors	Amorin, H; Bdikin, IK; Kholkin, AL; Costa, MEV
nationality	International
journal	PHYSICS OF THE SOLID STATE
keywords	LAYERED PEROVSKITE SRBI2TA2O9; ELECTRICAL-PROPERTIES; CAPACITORS; BI2SRTA2O9; TANTALATE; FAMILY; PHASE
abstract	StBi(2)Ta(2)O(9) (SBT) single crystals were produced by the high-temperature self-flux solution method using a Bi2O3 flux modified with B2O3. The processing conditions were optimized to obtain large and translucent SBT crystals with a layered habit and typical dimensions of approximately 7 x 5 x 0.2 mm. X-ray diffraction and x-ray topography measurements revealed that the major faces of the crystals with natural rectangular platelet morphology are perfectly (001)-oriented with edges directed along the [110] directions. The high quality of the crystals was confirmed by rocking curves (half-width of 0.04 degrees for the (0018) reflection) and by ferroelectric measurements. The anisotropy in the dielectric and ferroelectric properties was investigated both along the [110] (ab plane) and the [001] (c axis) directions. The growth mechanism, morphology, and dielectric anisotropy of the SBT crystal platelets are discussed based on its crystallographic structure.
publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
issn	1063-7834
year published	2006
volume	48
issue	3
beginning page	537
ending page	543
digital object identifier (doi)	10.1134/S1063783406030206
web of science category	Physics, Condensed Matter
subject category	Physics
unique article identifier	WOS:000237627000020