Temperature dependence of field‐responsive mechanisms in lead zirconate titanate. Issue 9 (1st June 2017)

• Record Type: Journal Article
• Authors: Chung, Ching‐Chang; Fancher, Chris M.; Isaac, Catherine; Nikkel, Jason; Hennig, Eberhard; Jones, Jacob L.
• Is Part Of: Journal of the American Ceramic Society. Volume 100:Issue 9(2017)
• Page Start: 4352
• Page End: 4361
• Publication Date: 2017-06-01
• Subjects: domains -- ferroelectricity/ferroelectric materials -- lead zirconate titanate -- phase transformations -- X‐ray methods; Ceramics -- Periodicals; 620.1405
• DOI: 10.1111/jace.14979
• Languages: English
• ISSNs: 0002-7820

Abstract

Abstract: An electric field loading stage was designed for use in a laboratory diffractometer that enables in situ investigations of the temperature dependence in the field response mechanisms of ferroelectric materials. The stage was demonstrated by measuring PbZr1− x Ti x O3 (PZT) based materials—a commercially available PZT and a 1% Nb‐doped PbZr0.56 Ti0.44 O3 (PZT 56/44)—over a temperature range of 25°C to 250°C. The degree of non‐180° domain alignment (η002 ) of the PZT as a function of temperature was quantified. η002 of the commercially available PZT increases exponentially with temperature, and was analyzed as a thermally activated process as described by the Arrhenius law. The activation energy for thermally activated domain wall depinning process in PZT was found to be 0.47 eV. Additionally, a field‐induced rhombohedral to tetragonal phase transition was observed 5°C below the rhombohedral‐tetragonal transition in PZT 56/44 ceramic. The field‐induced tetragonal phase fraction was increased 41.8% after electrical cycling. A large amount of domain switching (η002 =0.45 at 1.75 kV/mm) was observed in the induced tetragonal phase.