Comparative study of pulsed field magnetization for Y–Ba–Cu–O and Sm–Ba–Cu–O

• Published in: Materials science & engineering. B, Solid-state materials for advanced technology Vol. 65; no. 1; pp. 54 - 57
• Main Authors: Fukai, Hirofumi, Nagatomo, Takao, Nagashima, Ken, Hayashi, Noriki, Murakami, Masato
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 29.10.1999; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Critical currents; Cuprates superconductors (high tc and insulating parent compounds); Exact sciences and technology; High-Tc compounds; Physics; Properties of type I and type II superconductors; Pulsed field magnetization; Sm–Ba–Cu–O; Superconductivity; Trapped flux density; Y–Ba–Cu–O; Pulsed field magnetization; Y–Ba–Cu–O; Trapped flux density; Sm–Ba–Cu–O; Samarium oxides; Magnetic flux; Inorganic compounds; Magnetization; Transition element compounds; Magnetic field effects; Rare earth compounds; Experimental study; Critical current; Flux density; Barium oxides; High-Tc superconductors; Quaternary compounds; Copper oxides; Yttrium oxides
• ISSN: 0921-5107; 1873-4944
• DOI: 10.1016/S0921-5107(99)00197-X

We have performed a comparative study of the magnetization behavior with applying pulse fields for Y–Ba–Cu–O and Sm–Ba–Cu–O, which exhibit the different field dependence of critical current densities ( J c’s). Time variation of the field was monitored with the Hall probe sensor which is attached to the sample surface by varying the maximum field values from 0 to 2 T. In a low field region, the trapped magnetic field of Sm–Ba–Cu–O was slightly smaller than that of Y–Ba–Cu–O, however, it exceeded the value of Y–Ba–Cu–O in a high field region. The results reflect the J c– B characteristic of Sm–Ba–Cu–O, in which the J c values show the secondary peak effect and high field J c values are higher than those of Y–Ba–Cu–O.