Bi-based superconductors prepared with addition of CoFe2O4 for the design of a magnetic probe

被引：24

作者：

Ben Salem, M. K. ^{[1
]}

Slimani, Y. ^{[2
]}

Hannachi, E. ^{[1
]}

Ben Azzouz, F. ^{[1
,3
]}

Ben Salem, M. ^{[1
]}

机构：

[1] Univ Carthage, Fac Sci Bizerte, Dept Phys, Lab Phys Mat Struct & Properties, Zarzouna 7021, Tunisia

[2] Imam Abdulrahman Bin Faisal Univ, IRMC, Dept Biophys, POB 1982, Dammam 31441, Saudi Arabia

[3] Imam Abdulrahman Bin Faisal Univ, Dept Phys, Coll Sci, Dammam, Saudi Arabia

来源：

CRYOGENICS | 2018年 / 89卷

关键词：

BSCCO superconductor; Nanometer CoFe2O4; Magnetoresistivity; Magnetic fields sensor devices; (BI; PB)-2223; SUPERCONDUCTORS; SUBSTANTIAL ADDITION; PHASE; MICROSTRUCTURE; PBO;

D O I：

10.1016/j.cryogenics.2017.11.005

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

We have investigated the microstructure and the magnetoresistivity of bismuth based superconductor bulks added with nano-sized CoFe2O4 particles (10 nm in diameter). Samples were prepared through the solid state reaction (SSR) technique by addition of CoFe2O4 nanoparticles 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 rho(T) under applied magnetic fields (B) and electrical resistance versus B at 77 K, rho(B), were carried out. The CoFe2O4 added sample shows a great magnetoresistance to weak magnetic field at the temperature of liquid nitrogen (77 K). This result is attractive for practical, because CoFe2O4 added samples can be utilized as active elements in magnetic fields sensor devices.

引用

页码：53 / 57

页数：5

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