Pinning characteristics in chemically modified (Nd, Eu, Gd)-Ba-Cu-O superconductors

0134154 - FZU-D 20030044 RIV US eng J - Journal Article
Muralidhar, M. - Sakai, N. - Nishiyama, M. - Jirsa, Miloš - Machi, T. - Murakami, M.
Pinning characteristics in chemically modified (Nd, Eu, Gd)-Ba-Cu-O superconductors.
Applied Physics Letters. Roč. 82, č. 6 (2003), s. 943-945. ISSN 0003-6951. E-ISSN 1077-3118
R&D Projects: GA AV ČR IAA1010919
Institutional research plan: CEZ:AV0Z1010914
Keywords : melt-textured superconductors * pinning defects * irreversibility field * bulk superconductors * ternary systems * twin structure
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 4.049, year: 2003

In melt-processed (Nd_0.33Eu_0.38Gd_0.28)Ba₂Cu₃O_y a new type of a nanometer-scale lameller pinning structure was found. Due to its specific geometry, this pinning medium has an autstanding effect on super-current in very high fields. Irreversibility field increased above 12T or 15T at 77K (whenmeasured by SQUID or vibrating sample magnetometer, respectively).
Permanent Link: http://hdl.handle.net/11104/0032079