Influence of Zr/Sn Ratio Electric Properties of PLZST Ceramic

Abstract:

(Pb0.97La0.02)(Zr0.92-xSnxTi0.08)O3 (PLZST) ferroelectric ceramics with x=0.40, 0.25, 0.15, respectively, were investigated. It was found that these ceramics with different Zr:Sn ratios were perovskite structure. With increasing of Zr:Sn ratio, the phase-transition electric-field of antiferroelectric to ferroelectric phase increased. when x>0.15,All the samples have double hysteresis loops with antiferroelectric phase characteristics. Yet, when the electric field was removed at lower temperature of -5oC and -20oC, for x=0.25 and 0.40, the electric field induced FE phase can remain metastable FE state. But for x=0.15, the induced FE phase recover to AFE phase even at -20oC. Yet, electric field induced FE phase exist as metastable FE phase. TFE-AFE of the samples was -5oC, -20oC, when x=0.40, x=0.25, respectively. With increasing of Zr:Sn ratio, TFE-AFE increaseddecreased, Tc was hardly changed, but the dielectric constant increased from ~2500 to ~6000, the peak changed sharply, dielectric loss increased continuously with increasing of Zr:Sn ratio.

• Periodical: Key Engineering Materials (Volume 547)
• Pages: 101-105
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.547.101
• Online since: April 2013
• Authors: Jin Fei Wang, Tong Qing Yang, K. Wei, G. Li, Yong Xiang Li
• Keywords: Antiferroelectric, Dielectric Property, Ferroelectric, Phase Transition, Zr/Sn

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