Reversible Magnetization of Melt-Processed NEG-123 Superconductor
M. Jirsa a, M. RameŇ° a, M. Muralidhar b, J. Kacmarcik c and Ch. Marcenat d
aInstitute of Physics, ASCR, v.v.i., Na Slovance 2, CZ-18221 Praha 8, Czech Republic
bRailway Technical Research Institute, 2-8-38 Hikari-cho, Kokubuni-shi, Tokyo 185-8540, Japan
cInstitute of Experimental Physics SAS, Kosice, Slovakia
dCEA Grenoble, Grenoble Cedex 9, France
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Specific heat of superconducting electrons was measured in a melt-processed (Nd0.33Eu0.38Gd0.28)Ba2Cu3Oy superconductor (NEG-123) with 5 mol% of Gd-211, 1 wt% Ag, and 0.035 mol% of Zn. The thermodynamic characteristics of this compound are still not well known. From calorimetric measurements the reversible magnetization, critical fields, penetration depth, and coherence length were deduced. In the vicinity of Tc, the reversible magnetic moment was additionally measured by means of SQUID.
DOI: 10.12693/APhysPolA.118.1022
PACS numbers: 74.25.Ha, 74.25.Bt, 74.25.Op