Title :
Magnetic irreversibility of copper-oxide superconductors by splayed irradiation of swift heavy ions
Author :
Fan, X. ; Terasawa, M. ; Mitamura, T. ; Kohara, T. ; Ueda, K. ; Tsubakino, H. ; Matsubara, I. ; Yamamoto, A. ; Kambara, T.
Author_Institution :
Himeji Inst. of Technol., Hyogo, Japan
Abstract :
A series of the splayed configurations of orientations of columnar defects in La1.85Sr0.15CuO4 was formed by irradiation with 3.5-GeV Xe ions. The angular dependence of the irreversible magnetization and an upward shift of the irreversibility lines was observed. It is noticed that there exists a critical temperature T below which the vortex system is in a state of single pinning, whereas over which a single vortex is pinned by many columnar defects
Keywords :
critical points; crystal defects; flux pinning; high-temperature superconductors; ion beam effects; lanthanum compounds; magnetisation; strontium compounds; 3.5 GeV; La1.85Sr0.15CuO4; Xe ions; angular dependence; columnar defects; copper-oxide superconductor; critical temperature; irreversibility lines; irreversible magnetization; magnetic irreversibility; orientations; single pinning; splayed irradiation; swift heavy ions; vortex system; Amorphous magnetic materials; Chemical technology; Creep; High temperature superconductors; Magnetic flux; Magnetization; Pins; SQUIDs; Superconducting magnets; Superconductivity;
Conference_Titel :
Ion Implantation Technology Proceedings, 1998 International Conference on
Conference_Location :
Kyoto
Print_ISBN :
0-7803-4538-X
DOI :
10.1109/IIT.1998.813859
