首页> 外文期刊>Materials Research Bulletin >Significant enhancement in structural, dielectric, piezoelectric and ferromagnetic properties of Ba_(0.9)Sr_(0.1)Zr_(0.1)Ti_(0.9)O_3-CoFe_2O_4 multiferroic composites
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Significant enhancement in structural, dielectric, piezoelectric and ferromagnetic properties of Ba_(0.9)Sr_(0.1)Zr_(0.1)Ti_(0.9)O_3-CoFe_2O_4 multiferroic composites

机译:Ba_(0.9)Sr_(0.1)Zr_(0.1)Ti_(0.9)O_3-CoFe_2O_4多铁复合材料的结构,介电,压电和铁磁性能显着增强

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摘要

Multiferroic composites (1-x)Ba0.9Sr0.1Zr0.1Ti0.9O3-(x)CoFe2O4 (x = 0.0, 0.05, 0.10, 0.20 & 0.30) were prepared using mechanochemical activation method. Rietveld refined XRD patterns confirm the diphasic nature of composite samples. All of the diffraction peaks of (1 - x)BSZT-(x)CFO can be identified for the separate perovskite (BSZT) and inverse spinal (CFO) phases and no other impurity phase were observed for the composites. (1 - x)BSZT-(x)CFO sample with x = 0.05 have shown significant improvement in microstructural, dielectric, ferroelectric and piezoelectric properties over the pristine BSZT sample. Such an improvement in electrical properties can be attributed to larger grain size, improved density and easier ferroelectric domain wall motion inside the grain. Dielectric breakdown strength of the composites also shows a similar trend and is observed to be maximum for the sample with x = 0.05 CFO concentration. The composite samples also show a substantial enhancement in ferromagnetic characteristics and increases progressively with increase in ferrite (CFO) content.
机译:使用机械化学活化法制备了多铁性复合材料(1-x)Ba0.9Sr0.1Zr0.1Ti0.9O3-(x)CoFe2O4(x = 0.0、0.05、0.10、0.20和0.30)。 Rietveld精制的XRD图案证实了复合样品的两相性质。 (1-x)BSZT-(x)CFO的所有衍射峰都可以确定为钙钛矿(BSZT)和脊柱反向(CFO)相,复合物中没有其他杂质相。 x = 0.05的(1-x)BSZT-(x)CFO样品已显示出比原始BSZT样品在微观结构,介电,铁电和压电性能方面的显着改善。电性能的这种改善可归因于较大的晶粒尺寸,改善的密度以及晶粒内部铁电畴壁的运动更容易。复合材料的介电击穿强度也显示出类似的趋势,并且在x = 0.05 CFO浓度的样品中观察到最大。复合样品还显示出铁磁特性的显着增强,并随着铁素体(CFO)含量的增加而逐渐增加。

著录项

  • 来源
    《Materials Research Bulletin》 |2018年第4期|367-376|共10页
  • 作者单位

    Delhi Technol Univ, Dept Appl Phys, Bawana Rd, Delhi 110042, India;

    Delhi Technol Univ, Dept Appl Phys, Bawana Rd, Delhi 110042, India;

    AIACTR Geeta Colony, Dept Appl Sci, Delhi 110031, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Perovskite; Ferrite; Multiferroic; Ferroelectric; Ceramic;

    机译:钙钛矿;铁氧体;多铁性;铁电性;陶瓷;

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