TY - JOUR
T1 - Effect of CeO2 addition on microstructure and magnetic properties in (Nd,Eu,Gd)-Ba-Cu-O
AU - Muralidhar, M.
AU - Jirsa, M.
AU - Iida, K.
AU - Murakami, M.
N1 - Funding Information:
This work was supported by New Energy and Industrial Technology Development Organization (NEDO) as a part of its Research and Development of Fundamental Technology for Superconductor applications project under the new sunshine program administrated by the Agency of Industrial Science and Technology M.I.T.I of Japan. M. J. greatly appreciates the JSPS fellowship covering his stay at Iwate University and the collaboration with ISTEC. Partial support was provided by the grant no. A1010919/99 of the Grant Agency of the ASCR, M. Muralidhar acknowledges support from NEDO fellowship.
PY - 2001/8
Y1 - 2001/8
N2 - Morphology of Gd2BaCuO5 (Gd-211) secondary phase particles in an oxygen-controlled-melt-growth processed (Nd0.33Eu0.33Gd0.33)Ba2 Cu3Oy + 0.5 mol% of Pt (NEG-123) was studied as a function of varying amount (0-3 mol%) of CeO2. Optical and scanning electron microscopy revealed that sub-micron Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% of CeO2. With increasing CeO2 content the critical current density, Jc, increased particularly at low magnetic fields. The maximum value of Jc was achieved for 1 mol% CeO2 and reached 100 kA cm-2 at zero field and 77 K. The improved low-field critical current density is attributed to the refinement of Gd-211 particles.
AB - Morphology of Gd2BaCuO5 (Gd-211) secondary phase particles in an oxygen-controlled-melt-growth processed (Nd0.33Eu0.33Gd0.33)Ba2 Cu3Oy + 0.5 mol% of Pt (NEG-123) was studied as a function of varying amount (0-3 mol%) of CeO2. Optical and scanning electron microscopy revealed that sub-micron Gd-211 particles were distributed uniformly throughout the NEG-123 matrix for additions of up to 2 mol% of CeO2. With increasing CeO2 content the critical current density, Jc, increased particularly at low magnetic fields. The maximum value of Jc was achieved for 1 mol% CeO2 and reached 100 kA cm-2 at zero field and 77 K. The improved low-field critical current density is attributed to the refinement of Gd-211 particles.
KW - CeO
KW - Fine normal-conducting particles
KW - Gd-211
KW - High critical current density
KW - LRE-BaCuO
KW - Peak effect
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U2 - 10.1016/S0921-4534(01)00362-8
DO - 10.1016/S0921-4534(01)00362-8
M3 - Article
AN - SCOPUS:0035423378
VL - 357-360
SP - 665
EP - 668
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - SUPPL. 2
ER -