Scholarlink

<p>Pyroelectric effect has been investigated in the NBT-BT/CCFO composites in the present work. The composition of ceramic composites has been varied as (1-x)0.94Na<sub>0.5</sub>Bi<sub>0.5</sub>TiO<sub>3</sub>-0.06BaTiO<sub>3</sub>: xCoCr<sub>0.4</sub>Fe<sub>1.6</sub>O<sub>4</sub> (NBT-BT: xCCFO where x is varied from 0 to 80%, respectively, for pyroelectric study. Solid-state route has been adopted for the preparation of these composites and structural, morphological, dielectric, ferroelectric, and pyroelectric characteristics have been studied. The well-crystallized structures for all composites alongwith well-defined grains of both NBT-BT and CCFO phase has been observed from XRD and SEM Analysis. Good response of all the composites with temperature as well as electric field is revealed from Polarization studies. The pyroelectric coefficient initially increased with the CCFO content, reaching a maximum value of 0.9 × 10⁻<sup>4</sup> C·m⁻<sup>2</sup>·K⁻<sup>1</sup> at 40% CCFO. These findings suggest that nearly equal weight proportions of Ferroelectric (FE) and Ferrimagnetic (FM) phases optimize charge distribution, which is advantageous for future pyroelectric device applications. Furthermore, these novel composites offer insights into developing multifunctional pyroelectric devices with miniaturization potential. The significance of NBT -based composites is highlighted in the present study which offer higher depolarization temperatures and moderate dielectric constants, for the development of eco-friendly pyroelectric devices.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A novel approach towards thermal energy harvesting using pyroelectric effect in lead-free (0.94Na0.5Bi0.5TiO3-0.06BaTiO3) based composites

  • 期刊论文

  • 发表日期：

    2025年10月14日

查看全文
  • Vandana Mahlawat,
  • Mukul Kumar,
  • Shashikant Sheoran,
  • Rahul Goel,
  • Sanjeev Kumar

摘要

Pyroelectric effect has been investigated in the NBT-BT/CCFO composites in the present work. The composition of ceramic composites has been varied as (1-x)0.94Na0.5Bi0.5TiO3-0.06BaTiO3: xCoCr0.4Fe1.6O4 (NBT-BT: xCCFO where x is varied from 0 to 80%, respectively, for pyroelectric study. Solid-state route has been adopted for the preparation of these composites and structural, morphological, dielectric, ferroelectric, and pyroelectric characteristics have been studied. The well-crystallized structures for all composites alongwith well-defined grains of both NBT-BT and CCFO phase has been observed from XRD and SEM Analysis. Good response of all the composites with temperature as well as electric field is revealed from Polarization studies. The pyroelectric coefficient initially increased with the CCFO content, reaching a maximum value of 0.9 × 10⁻4 C·m⁻2·K⁻1 at 40% CCFO. These findings suggest that nearly equal weight proportions of Ferroelectric (FE) and Ferrimagnetic (FM) phases optimize charge distribution, which is advantageous for future pyroelectric device applications. Furthermore, these novel composites offer insights into developing multifunctional pyroelectric devices with miniaturization potential. The significance of NBT -based composites is highlighted in the present study which offer higher depolarization temperatures and moderate dielectric constants, for the development of eco-friendly pyroelectric devices.