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Abstract <p>Ba<sub>0.85</sub>Ca<sub>0.15</sub>Zr<sub>0.9</sub>Ti<sub>0.1</sub>O<sub>3</sub> (BCZT) ceramics possess exceptional dielectric, ferroelectric, and piezoelectric properties, making them a compelling choice for manufacturing microelectronic devices. The BCZT ceramic materials were replaced with Ba<sub>0.85</sub>Ca<sub>0.15–<i>x</i></sub>Sr<sub><i>x</i></sub>Zr<sub>0.9</sub>Ti<sub>0.1</sub>O<sub>3</sub>. The samples were calcinated at 1150°C for 4 h in a conventional high-temperature muffle furnace. The powders were then sintered in a microwave furnace at 1450°. The cubic structure of the material at room temperature was confirmed using Rietveld X-ray diffraction. Dielectric studies, which were temperature and frequency dependent, showed that the dielectric constant and dielectric loss increased with SrO substitution upto <i>x</i> = 0.10. Relaxor behavior was observed in all Sr-substituted samples. The degree of diffuseness was calculated using the modified Curie–Weiss law.</p>

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Dielectric Diffusive and Relaxor Behaviour of SrO Substituted BCZT Ceramics

  • 期刊论文

  • 发表日期：

    2025年2月27日

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  • Srimannarayana Kola,
  • K. V. Ramesh,
  • D. Venkatesh,
  • G. V. Swamy,
  • T. Durga Rao,
  • Md Haleema

摘要

Abstract

Ba0.85Ca0.15Zr0.9Ti0.1O3 (BCZT) ceramics possess exceptional dielectric, ferroelectric, and piezoelectric properties, making them a compelling choice for manufacturing microelectronic devices. The BCZT ceramic materials were replaced with Ba0.85Ca0.15–xSrxZr0.9Ti0.1O3. The samples were calcinated at 1150°C for 4 h in a conventional high-temperature muffle furnace. The powders were then sintered in a microwave furnace at 1450°. The cubic structure of the material at room temperature was confirmed using Rietveld X-ray diffraction. Dielectric studies, which were temperature and frequency dependent, showed that the dielectric constant and dielectric loss increased with SrO substitution upto x = 0.10. Relaxor behavior was observed in all Sr-substituted samples. The degree of diffuseness was calculated using the modified Curie–Weiss law.