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DOPING CHARACTERIZATION STUDIES OF LAYERED PEROVSKITE SrBi2Ta2O9 FERROELECTRIC THIN FILMS

YANG PING-XIONG CHU JUN-HAO DENG HONG-MEI

DOPING CHARACTERIZATION STUDIES OF LAYERED PEROVSKITE SrBi2Ta2O9 FERROELECTRIC THIN FILMS

YANG PING-XIONG, CHU JUN-HAO, DENG HONG-MEI
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  • Received Date:  13 November 1997
  • Accepted Date:  06 January 1998
  • Published Online:  20 July 1998

DOPING CHARACTERIZATION STUDIES OF LAYERED PEROVSKITE SrBi2Ta2O9 FERROELECTRIC THIN FILMS

  • 1. (1)中国科学院上海技术物理研究所红外物理国家重点实验室,上海 200083; (2)中国科学院上海冶金研究所,上海 200050

Abstract: The characterization of Nb-doped layered perovskite SrBi2Ta2O9 was studied.The mechanism of modification of properties was analyzed.Photoacoustic spectroscopy has been used to study the light absorption of SrBi2Ta2O9 with various Nb contents.The results show that the absorption band at 580nm in the photoacoustic spectroscopy exhibits a red shift with increasing niobium content.The remanent polarization of Nb-doped SrBi2Ta2O9 films depends on the concentration ratio of Ta/Nb.The remanent polarization of the films arose an maximum at the area of Ta/Nb≈1.This may be related to the existence of morphotropic phase boundary.

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