抄録
Due to the fact that Fermi surfaces of the electron-doped superconductors are different from those of the hole doped, microscopic studies on the dynamical characters of the former materials might bring a solution to the mechanism of high temperature superconductivity. Pr_<2_X>Ce_XCu0_4 was chosen to investigate the magnetic excitations using ncutron scattering experiments because Pr^<3+>ions have a very low background level in neutron scattering in comparison with other rare-earth ions. Flux, TSSG and TSFZ method were used to grow it. Here, a comparativc studics in crystal growth between Pr_<2_X>Ce_XCu0_4 and other electron-dopcd materials wiil be reported.
