1. Paramagnetism and macroscopic magnetic properties of single-crystalYxGd1−xBa2Cu2.43Al0.19O6+y
- Author
-
X.X. Yao, Mengjun Qin, Ji Hl, Fu Xk, Jin X, Y.M. Ni, Rong Xs, and Xiao L
- Subjects
Paramagnetism ,Magnetic anisotropy ,Magnetization ,Materials science ,Magnetic energy ,Condensed matter physics ,Condensed Matter::Superconductivity ,Brillouin and Langevin functions ,Magnetic hysteresis ,Magnetic dipole ,Magnetic susceptibility - Abstract
Magnetic measurements are carried out on single-crystal YxGd1-xBa2Cu2.43Al0.19O6+y (x = 0,0.5) samples. The magnetic-field dependence of the averaged paramagnetic moments carried by the rare-earth Gd3+ ions in these samples is well described by the extended Brillouin function. This paramagnetism tilts the magnetic hysteresis loop and broadens the widths of the magnetic hysteresis DELTAM; therefore the magnetization critical-current density J(c) based on the Bean critical-state model deviates from the intrinsic value. At temperature T = 4.2 K, this deviation is up to 9% for the single-crystal GdBa2Cu2.43Al0.19O6+y sample. At the end, the influence of the paramagnetism of Gd3+ ions on some other macroscopic magnetic properties is discussed.
- Published
- 1994