Dynamic Behavior of Polar Nanoregions in Re?Entrant Relaxor 0.6Bi(Mg <sub>1/2</sub> Ti <sub>1/2</sub> )O <sub>3</sub> –0.4PbTiO <sub>3</sub>
نویسندگان
چکیده
The existence of polar nanoregions (PNRs) is the most important characteristic ferroelectric relaxors; however, size determination and dynamic PNRs remain uncertain. Herein, it revealed that a re-entrant relaxor behavior ferroelectric–paraelectric transition coexist in complex perovskite oxide 0.6Bi(Mg1/2Ti1/2)O3-0.4PbTiO3. Two dielectric anomalies, 1) low-temperature 2) high-temperature diffuse phase (DPT), are described by phenomenological statistical model. sizes two kinds corresponding to states were obtained. dynamics analyzed using isothermal electrical modulus, which shows three critical temperatures associated with DPT, formation, freezing PNRs, respectively. temperature evolution depends on stoichiometry bismuth. results provide new insights into modification way behavior.
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ژورنال
عنوان ژورنال: Physica Status Solidi A-applications and Materials Science
سال: 2022
ISSN: ['1862-6300', '1862-6319']
DOI: https://doi.org/10.1002/pssa.202100579