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Bi-based superconductors prepared with addition of CoFe 2O 4 for the design of a magnetic probe

机译：添加CoFe 2 O 4 用于设计磁性的设计 探测

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摘要

We have investigated the microstructure and the magnetoresistivity of bismuth based superconductor bulks added with nano-sized CoFe2O4particles (10?nm in diameter). Samples were prepared through the solid state reaction (SSR) technique by addition of CoFe2O4nanoparticles during the last step of heat treatment. Phase examination using X-ray diffraction (XRD), morphology investigation by scanning electron microscope (SEM), microstructure and local chemical composition analyses using transmission electron microscope (TEM) coupled with energy dispersive X-ray spectroscope (EDXS), electrical resistance versus temperature ρ(T) under applied magnetic fields (B) and electrical resistance versus B at 77?K, ρ(B), were carried out. The CoFe2O4added sample shows a great magnetoresistance to weak magnetic field at the temperature of liquid nitrogen (77?K). This result is attractive for practical, because CoFe2O4added samples can be utilized as active elements in magnetic fields sensor devices.
机译：我们已经研究了基于铋的超导体块的微观结构和磁阻率加入的纳米大小的COFE2O4分子（直径为10·NM）。 通过在热处理的最后一步中加入COFE 2 O 4 NANOMATICLE来制备样品通过固态反应（SSR）技术制备。 使用X射线衍射（XRD），通过扫描电子显微镜（SEM），微观结构和局部化学成分的形态研究使用透射电子显微镜（TEM）与能量分散X射线分光镜（EDX），电阻与温度进行分析 ρ（t）在施加的磁场（b）下和电阻与b处为77Ωk，ρ（b）。 CoFe2O4Added样品在液氮温度下显示出弱磁场的大磁阻（77μk）。 该结果对于实际具有吸引力，因为CoFe2O4Added样本可以用作磁场传感器装置中的有源元件。

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  • 来源
    《Cryogenics》 |2018年第2018期|共5页
  • 作者

    M.K. Ben Salem; Y. Slimani; E. Hannachi; F. Ben Azzouz; M. Ben Salem;

  • 作者单位

    Laboratory of Physics of Materials – Structures and Properties Department of Physics Faculty of Sciences of Bizerte University of Carthage;

    Department of Biophysics Institute for Research and Medical Consultations (IRMC) Imam Abdulrahman Bin Faisal University;

    Laboratory of Physics of Materials – Structures and Properties Department of Physics Faculty of Sciences of Bizerte University of Carthage;

    Laboratory of Physics of Materials – Structures and Properties Department of Physics Faculty of Sciences of Bizerte University of Carthage;

    Laboratory of Physics of Materials – Structures and Properties Department of Physics Faculty of Sciences of Bizerte University of Carthage;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 制冷工程;低温物理学;
  • 关键词

    BSCCO superconductor; Nanometer CoFe2O4; Magnetoresistivity; Magnetic fields sensor devices;

    机译：BSCCO超导体;纳米COFE2O4;磁阻;磁场传感器装置;

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