Presentation Information
[WBP2-10]Critical Current Density of Rb3C60 Bulk Superconductor Fabricated by a Rapid and Scalable Synthesis Route
*Hiroki Hasegawa1,2, Akira Iyo2, Shigeyuki Ishida2, Hiroshi Eisaki2, Hiraku Ogino2, Kenji Kawashima3,2, Mariko Murayama1, Taichiro Nishio1,2 (1. Tokyo University of Science (Japan), 2. AIST (Japan), 3. IMRA Japan (Japan))
Keywords:
Alkali metal-intercalated C60,Rb3C60,bulk superconductor,rapid and scalable synthesis route,upper critical field,critical current density
In this study, we focused on Rb3C60, evaluated the superconducting properties of its sintered pellets to assess their feasibility for such applications.
The pellets were prepared by pelletizing a powder obtained through direct mixing of Rb and C60, followed by heat treatment at 127 K for 1 h in a glovebox. The upper critical field Hc2 and the intergrain critical current density Jc were determined by electrical resistivity and magnetization measurements, respectively.
Hc2, estimated using the WHH theory, reached as high as 674 kOe, consistent with the previous report. An intergrain Jc exceeding 100000 A per cm^2 was obtained in self field at 5 and 10 K, with a relatively weak field dependence.
These results demonstrate that Rb3C60 possesses excellent potential as a bulk superconducting magnet material.
Rb3C60 is a promising material for bulk superconducting magnets.
The pellets were prepared by pelletizing a powder obtained through direct mixing of Rb and C60, followed by heat treatment at 127 K for 1 h in a glovebox. The upper critical field Hc2 and the intergrain critical current density Jc were determined by electrical resistivity and magnetization measurements, respectively.
Hc2, estimated using the WHH theory, reached as high as 674 kOe, consistent with the previous report. An intergrain Jc exceeding 100000 A per cm^2 was obtained in self field at 5 and 10 K, with a relatively weak field dependence.
These results demonstrate that Rb3C60 possesses excellent potential as a bulk superconducting magnet material.
Rb3C60 is a promising material for bulk superconducting magnets.