摘要
The de magnetization of Y-type zeolite containing Fe ions and that after reduction treatment were measured in the temperature range of 1.5-300K.The samples show paramagnetic behavior・The obtained value for the magnetic moment of the paramagnetic units strongly implies the existence of ferromagnetic coupling between the Fe ion at site I in hexagonal prism and the one at the nearest site I' in β cage.
基金
Supported by the National Natural Science Foundation of China
National Fundamental Science Research Program.
