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Title: High energy storage density performance of Ba, Sr-modified lead lanthanum zirconate titanate stannate antiferroelectric ceramics

Graphical abstract: Polarization hysteresis (P–E) loops of the (Pb{sub 0.85}Ba{sub 0.08}Sr{sub 0.03}La{sub 0.03}) (Zr{sub 0.74}Sn{sub 0.22}Ti{sub 0.04}) samples: (a) measured at different applied electric-field and (b) measured at different temperatures is shown. It is typical antiferroelectrics whose remnant polarization is zero. As the remnant polarization of AFE is small and the ceramics are accompanied by the formation of the anti-parallel domain structure, energy stored in PLZST can be effectively released. Thus we calculated the energy density from the P–E loop and obtained the power density was up to 1.2 J/cm{sup 3} at 55 °C, and at 45 °C the energy density was ∼1.24 J/cm{sup 3}. As usual, for bulk ceramics, the switching between the AFE and FE states occurs at lower field. This value is much higher than that reported previously for the PLZT bulk ceramic (0.4 J/cm{sup 3}). - Highlights: • Ba{sup 2+}, Sr{sup 2+} co-doping caused the T{sub c} of PLZST moved to the lower temperature (T{sub c} ≈ 40 °C). • The ΔE was so smaller, E{sub AF} ≈ 90 kV/cm and E{sub FA} ≈ 85 kV/cm. • Ba, Sr co-doped PLZST ceramic exhibited slanted P–E loops with a large breakdown field (100 kV/cm). • A highmore » energy density was up to 1.2 J/cm{sup 3}. - Abstract: (Pb{sub 0.85}Ba{sub 0.08}Sr{sub 0.03}La{sub 0.03})(Zr{sub 0.74}Sn{sub 0.22}Ti{sub 0.04}) (Ba, Sr co-doped PLZST) co-doping antiferroelectric (AFE) ceramics with orthorhombic perovskite structure were prepared by the traditional solid state reaction process. It was observed that the doping of barium and strontium caused the Curie temperature of PLZST move to the lower temperature (T{sub c} ≈ 40 °C). Ba, Sr co-doped PLZST AFE ceramics exhibited excellent electrical properties, the AFE to ferroelectric (FE) transition occurred at field E{sub AF} ≈ 90 kV/cm, and the transition from FE to AFE occurred at E{sub FA} ≈ 85 kV/cm. The maximum relative permittivity was about 4800, occurring at a field near the AFE to FE transition point, with a dielectric loss of 0.006. The samples exhibited small ΔE and slanted hysteresis loops with a large breakdown field of 100 kV/cm due to Ba, Sr co-doping ceramics, and a high energy density of 1.2 J/cm{sup 3}.« less
Authors:
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Publication Date:
OSTI Identifier:
22475708
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 48; Journal Issue: 10; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BARIUM ADDITIONS; BREAKDOWN; CERAMICS; CURIE POINT; DENSITY; DOMAIN STRUCTURE; DOPED MATERIALS; ELECTRIC FIELDS; ENERGY DENSITY; ENERGY STORAGE; FERROELECTRIC MATERIALS; HYSTERESIS; ORTHORHOMBIC LATTICES; PERFORMANCE; PERMITTIVITY; PEROVSKITE; PLZT; POLARIZATION; STRONTIUM ADDITIONS; X-RAY DIFFRACTION