Scholarlink

<p>The magnetic nanoparticles of Y<sup>3+</sup> doped cobalt ferrite (CoFe<sub>2 − x</sub>Y<sub>x</sub>O<sub>4</sub>, x = 0.00, 0.01, 0.02, 0.03, 0.04, 0.05) were synthesized by sol-gel auto combustion method using green synthesis approach by utilizing Piper Nigrum (black pepper) extract. The structural, surface, thermo-elastic and mechano-elastic properties were investigated using Rietveld X-ray diffraction analysis, transmission electron microscopy (TEM), Brunauer Emmitt Teller (BET) and Fourier Transform Infrared Spectroscopy (FTIR) techniques. The X-ray diffraction analysis confirmed the single phase production of the nanoparticles. The XRD patterns of all the samples were successfully refined using Rietveld analysis, yielding goodness-of-fit (χ<sup>2</sup>) values in the range of1.83-3.03.The average particle sizeobtained from histogram plots was in the range of 45 –47&#xa0;nm. The surface area calculated through BET analysis was found to be 1.555 m<sup>2</sup>/g, 8.796 m<sup>2</sup>/g and 17.509 m<sup>2</sup>/g for x = 0.00, 0.03 and 0.05 respectively. The thermo-elastic properties namely Debye temperature found todecreases from 690&#xa0;K to 675&#xa0;K with Y<sup>3+</sup> doping. The mechano-elastic properties such as Young’s modulus decreases from 149.31 GPa to 143.31 GPa, bulk modulus decreases from 106.11 GPa to 101.85 GPa, the modulus of rigidity decreases from 71.87 GPa to 68.98 GPa on doping Y<sup>3+</sup> ions. However, thePoisson’s ratio remains almost constant to 0.224. Thus, the doping of Y<sup>3+</sup> ions in cobalt ferrite strongly affects the structural, surface, thermo-elastic, mechano-elastic properties.</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

Rietveld refined structural analysis, surface analysis, thermo-elastic, mechano-elastic properties of cobalt ferrite nanoparticles doped with Y3+ ions

  • 期刊论文

  • 发表日期：

    2026年1月6日

查看全文
  • Sudarshan Gawali,
  • Smita More,
  • Vasudev R. Bhagwat,
  • Tukaram S. Saraf,
  • K. M. Jadhav

摘要

The magnetic nanoparticles of Y3+ doped cobalt ferrite (CoFe2 − xYxO4, x = 0.00, 0.01, 0.02, 0.03, 0.04, 0.05) were synthesized by sol-gel auto combustion method using green synthesis approach by utilizing Piper Nigrum (black pepper) extract. The structural, surface, thermo-elastic and mechano-elastic properties were investigated using Rietveld X-ray diffraction analysis, transmission electron microscopy (TEM), Brunauer Emmitt Teller (BET) and Fourier Transform Infrared Spectroscopy (FTIR) techniques. The X-ray diffraction analysis confirmed the single phase production of the nanoparticles. The XRD patterns of all the samples were successfully refined using Rietveld analysis, yielding goodness-of-fit (χ2) values in the range of1.83-3.03.The average particle sizeobtained from histogram plots was in the range of 45 –47 nm. The surface area calculated through BET analysis was found to be 1.555 m2/g, 8.796 m2/g and 17.509 m2/g for x = 0.00, 0.03 and 0.05 respectively. The thermo-elastic properties namely Debye temperature found todecreases from 690 K to 675 K with Y3+ doping. The mechano-elastic properties such as Young’s modulus decreases from 149.31 GPa to 143.31 GPa, bulk modulus decreases from 106.11 GPa to 101.85 GPa, the modulus of rigidity decreases from 71.87 GPa to 68.98 GPa on doping Y3+ ions. However, thePoisson’s ratio remains almost constant to 0.224. Thus, the doping of Y3+ ions in cobalt ferrite strongly affects the structural, surface, thermo-elastic, mechano-elastic properties.