The influence of WO3 nano-particle addition on the structural and mechanical properties of Bi1.8Sr2Ca1.1Cu2.1Oy ceramics
作者： Berdan Özkurt
DOI: 10.1007/S10854-013-1390-0
关键词: Electrical resistivity and conductivity 、 Magnetic hysteresis 、 Superconductivity 、 Ceramic 、 Indentation 、 Analytical chemistry 、 Indentation hardness 、 Materials science 、 Scanning electron microscope 、 Hysteresis 、 Electrical and Electronic Engineering 、 Atomic and Molecular Physics, and Optics 、 Electronic, Optical and Magnetic Materials 、 Condensed matter physics
摘要: The effect of nano-sized WO3 (40 nm) addition on the physical and magnetic properties Bi-2212 superconductors was investigated by X-rays diffraction (XRD), scanning electron microscopy, dc electrical resistivity, hysteresis loop measurements Vickers microhardness measurements. XRD observations indicated that number type nonsuperconductor phases changes with increasing content. With increase in W content critical temperature decreases resistivity value at room for sample W4 significantly increases. In addition, adding into samples causes a remarkable decrease area enclosed cycles. current density (Jc) 10 K all W-doped lower than pure sample, indicating superconductor negatively affect when nono-sized particles enters structure. obtained values this work have typical indentation size behavior.
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