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<p>This work involved the dynamic scaling hysteresis behavior of MnO<sub>2</sub>-doped BCZT (Ba<sub>0.85</sub>Ca<sub>0.15</sub>Zr<sub>0.1</sub>Ti<sub>0.9</sub>O<sub>3</sub>) perovskite compounds synthesized by a traditional solid-state reaction technique. The single-phase perovskite symmetry is observed at all dopant concentrations, as authenticated by X-ray diffraction. A small deviation in the transition temperature and electrical permittivity with rising dopant value was indicated by temperature-driven dielectric measurements. The temperature-driven ferroelectric hysteresis measurement was carried out and the correlation of remanent polarization (<i>P</i><sub>r</sub>), coercive field (<i>E</i><sub>c</sub>), and the mean hysteresis loop area ⟨<i>A</i>⟩ with temperature was analyzed. The exponents associated with the temperature-driven hysteresis quantities were obtained using a standard power-law relationship. The storage performance of the compositions was measured using conventional formula. An Olsen electrothermal cycle was utilized to assess the energy harvesting (thermal) capabilities of all compositions. The electrocaloric performance of the doped compositions was estimated using the indirect method. These results indicate that integrating MnO<sub>2</sub> into BCZT ceramics is an effective method for improving energy storage capacity and pyroelectric and electrocaloric properties.</p>

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Understanding of dynamic scaling behavior, pyroelectric energy storage and electrocaloric performance of MnO2-modified Ba0.85Ca0.15Zr0.1Ti0.9O3 ceramics

  • 期刊论文

  • 发表日期：

    2026年7月31日

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  • S. Nanda,
  • T. Badapanda,
  • H. Joardar,
  • Sumit,
  • A. Arockiarajan,
  • S. K. Rout

摘要

This work involved the dynamic scaling hysteresis behavior of MnO2-doped BCZT (Ba0.85Ca0.15Zr0.1Ti0.9O3) perovskite compounds synthesized by a traditional solid-state reaction technique. The single-phase perovskite symmetry is observed at all dopant concentrations, as authenticated by X-ray diffraction. A small deviation in the transition temperature and electrical permittivity with rising dopant value was indicated by temperature-driven dielectric measurements. The temperature-driven ferroelectric hysteresis measurement was carried out and the correlation of remanent polarization (Pr), coercive field (Ec), and the mean hysteresis loop area ⟨A⟩ with temperature was analyzed. The exponents associated with the temperature-driven hysteresis quantities were obtained using a standard power-law relationship. The storage performance of the compositions was measured using conventional formula. An Olsen electrothermal cycle was utilized to assess the energy harvesting (thermal) capabilities of all compositions. The electrocaloric performance of the doped compositions was estimated using the indirect method. These results indicate that integrating MnO2 into BCZT ceramics is an effective method for improving energy storage capacity and pyroelectric and electrocaloric properties.