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|Title:||Phase transitions and dielectric properties in Bi(Zn<inf>1/2</inf>Ti <inf>1/2</inf>)O3-(Na<inf>1-y</inf>Li<inf>y</inf>)NbO<inf>3</inf> perovskite solid solutions|
|Authors:||Chien Chih Huang|
Brady J. Gibbons
David P. Cann
Physics and Astronomy
|Abstract:||Perovskite solid solutions based on the system Bi(Zn1/2Ti 1/2)O3-NaNbO3 were obtained via solid-state processing techniques. The crystal structure and ferroelectric phase transitions were studied by means of X-ray diffraction and dielectric measurements. A stable perovskite phase was obtained for Bi(Zn1/2Ti 1/2)O3 substitutions up to 10mol%. The dielectric characterization revealed that as the Bi(Zn1/2Ti1/2)O 3 content increased, the transition temperature decreased and the transition peak became very diffuse. The polarization hysteresis loop and strain measurements presented evidence of an induced ferroelectric phase with 1 mol % Bi(Zn1/2Ti1/2)O3 substitutions. The planar coupling factor (kp) for 0.01Bi(Zn1/2Ti 1/2)O3-0.99NaNbO3 was measured to be 0.28. In addition, with the substitution of Li for Na in the Bi(Zn1/2Ti 1/2)O3-(Na1-yLiy)NbO3 system, the diffuseness of the transition peak decreased and the transition temperature increased. © 2009 The Japan Society of Applied Physics.|
|Appears in Collections:||CMUL: Journal Articles|
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