PREPARATION AND ELECTRICAL PROPERTIES OF LEAD-FREE Bi0.5(Na0.4K0.6)0.5TiO3 THIN FILMS.

Authors :: Changchong Yang
Zhuo Wang
Guangpeng Ma
Shengli Gu
Yuguo Yang
Dongmei Yang
Jianru Han
Source :: Surface Review & Letters; Jun2005, Vol. 12 Issue 3, p409-412, 4p
Publication Year :: 2005
Abstract: Lead-free Bi<subscript>0.5</subscript>(Na<subscript>0.4</subscript>K<subscript>0.6</subscript>)<subscript>0.5</subscript>TiO<subscript>3</subscript> films have been synthesized by a chemical solution deposition method and deposited on p-Si(111) substrate by spin coating. Powder of the precursor solution heated at 650°C was studied by infrared scattering spectroscopy. The structural characteristics and crystallization of the films were examined by X-ray diffraction. The surface morphology and quality were studied using atomic force microscopy. The films exhibit good insulating properties and resistance to breakdown. The clockwise hysteresis curve is referred to as polarization type switching and the memory window is about 1.5 V. [ABSTRACT FROM AUTHOR]

Subjects :: THIN films
SOLUTION (Chemistry)
CRYSTALLIZATION
X-ray diffraction
ATOMIC force microscopy
HYSTERESIS

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