TY - JOUR
T1 - The effect of Y 2 O 3 buffer layer on the magnetic properties of melt-processed YBCO superconductor
AU - Aydıner, Alev
AU - Çakır, Bakiye
AU - Seki, Hironori
AU - Başoğlu, Mehmet
AU - Wongsatanawarid, Atikorn
AU - Murakami, Masato
AU - Yanmaz, Ekrem
N1 - Funding Information:
Acknowledgements This study was supported by Turkish Scientific and Research Council (TUBITAK) research grant (TBAG-107T751) and Karadeniz Technical University research grant (BAP-2008.111.001.8).
PY - 2011/7
Y1 - 2011/7
N2 - In this study, two kinds of melt-processed YBCO samples (Y1050-1 and Y1050-2) grown on a buffer layer of Y 2 O 3 addition were fabricated. The compacted powders were located on a crucible with Y 2 O 3 powder freely poured and a buffer layer of pressed Y 2 O 3 to avoid liquid to spread on the furnace plate. The superconducting transition temperature was determined by a standard four-point method at temperatures between 40 and 100 K. The transition temperatures of Y1050-1 and Y1050-2 were found to be 91.6 and 92.9 K at zero magnetic fields, respectively. The magnetization measurements were performed using a vibrating sample magnetometer (VSM) on the same system at 5, 40, and 77 K. The critical current densities for Y1050-1 and Y1050-2 samples were determined to be 6.5×10 3 and 5.6×10 3 A/cm 2 at 77 K in zero magnetic fields, respectively. The trapped magnetic field measurements of the samples were performed by using a Hall probe scanning device and a Fe-Nd-B permanent magnet at 77 K. It was found that the trapped magnetic field of the Y1050-1 sample is higher than that of the Y1050-2 sample.
AB - In this study, two kinds of melt-processed YBCO samples (Y1050-1 and Y1050-2) grown on a buffer layer of Y 2 O 3 addition were fabricated. The compacted powders were located on a crucible with Y 2 O 3 powder freely poured and a buffer layer of pressed Y 2 O 3 to avoid liquid to spread on the furnace plate. The superconducting transition temperature was determined by a standard four-point method at temperatures between 40 and 100 K. The transition temperatures of Y1050-1 and Y1050-2 were found to be 91.6 and 92.9 K at zero magnetic fields, respectively. The magnetization measurements were performed using a vibrating sample magnetometer (VSM) on the same system at 5, 40, and 77 K. The critical current densities for Y1050-1 and Y1050-2 samples were determined to be 6.5×10 3 and 5.6×10 3 A/cm 2 at 77 K in zero magnetic fields, respectively. The trapped magnetic field measurements of the samples were performed by using a Hall probe scanning device and a Fe-Nd-B permanent magnet at 77 K. It was found that the trapped magnetic field of the Y1050-1 sample is higher than that of the Y1050-2 sample.
KW - Trapped magnetic field
KW - YBCO
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U2 - 10.1007/s10948-010-0841-6
DO - 10.1007/s10948-010-0841-6
M3 - Article
AN - SCOPUS:79960700664
SN - 1557-1939
VL - 24
SP - 1397
EP - 1401
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
IS - 5
ER -