Published Date
Date:
S. A. Syamsyir
, H. Azhan
, Z. A. S. Zuliana
, W. A. W. Razali
, A. W. Norazidah
, H. N. Hidayah
, J. S. Hawa
, H. J. M. Ridzwan
, A. Nazree
Abstract
These pioneer studies unveil the distinguishable properties of standard YBa2Cu3O7 (Y123) and Y3CaBa4Cu8Oy (Y348) in terms of its porous and nonporous structure. Solid-state reaction method was used to fabricate the ceramic materials which involve a series of heating and grinding. The electrical properties of superconductor such as critical temperature, T c, and critical current density, J c, were determined using resistivity measurement system (RMS). Scanning electron microscope was used to analyze the structural properties and morphology of particular material, respectively. The highest critical current density (J C) is porous (Y123) which is 2.66 A/cm2 instead of 2.34 A/cm2for porous Y3CaBa4Cu8Oy. The critical temperature YCaBa2Cu3Oy (Y123) for porous structure is much higher compared to nonporous structure, which is T C = 89 K. The critical temperature for porous YCaBa4Cu6Oy is 65 K which is higher than the nonporous sample. SEM micrograph for porous structure showed the increase of critical currents is dominantly determined by porosity due to bigger and continuity formation of grains which lessen the current blocking effect causes by grain boundaries.
References
For further details log on website. :
http://link.springer.com/chapter/10.1007/978-981-287-077-3_79
Date:
Abstract
These pioneer studies unveil the distinguishable properties of standard YBa2Cu3O7 (Y123) and Y3CaBa4Cu8Oy (Y348) in terms of its porous and nonporous structure. Solid-state reaction method was used to fabricate the ceramic materials which involve a series of heating and grinding. The electrical properties of superconductor such as critical temperature, T c, and critical current density, J c, were determined using resistivity measurement system (RMS). Scanning electron microscope was used to analyze the structural properties and morphology of particular material, respectively. The highest critical current density (J C) is porous (Y123) which is 2.66 A/cm2 instead of 2.34 A/cm2for porous Y3CaBa4Cu8Oy. The critical temperature YCaBa2Cu3Oy (Y123) for porous structure is much higher compared to nonporous structure, which is T C = 89 K. The critical temperature for porous YCaBa4Cu6Oy is 65 K which is higher than the nonporous sample. SEM micrograph for porous structure showed the increase of critical currents is dominantly determined by porosity due to bigger and continuity formation of grains which lessen the current blocking effect causes by grain boundaries.
References
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For further details log on website. :
http://link.springer.com/chapter/10.1007/978-981-287-077-3_79
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