Effects of Lu Doping on the Magnetic Behavior of YBCO Superconductors Prepared by MPMG Method |
| |
Authors: | E. Uysal A. Ozturk S. Kutuk S. Çelebi |
| |
Affiliation: | 1. Department of Physics, Faculty of Science, Karadeniz Technical University, 61080, Trabzon, Turkey
|
| |
Abstract: | We report on magnetic behavior of Y 1?xLu xBa 2 Ca 3 O 7?δ (x= 0, 0.5) samples synthesized by a modified melt powder melt growth (MPMG) method at three different sintering temperatures (920, 930, 940 °C). Isothermal magnetization measurements were done as a function of magnetic field at 20 and 77 K upon zero-field cooling (ZFC) process. The critical current densities as a function of magnetic field have been estimated from M–H hysteresis loop. Partial Lu substitution for Y on YBCO superconductors improved significantly the bulk critical current density, which is confirmed by field-cooled magnetization and AC susceptibility measurements. Magnetic relaxation measurement has been carried out in remanent magnetization regime. AC susceptibility measurements have been performed as a function of temperature to determine the transition temperature. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|