利用热中子透射法测定γ-Fe_2O_3的氢含量。利用差热分析、磁分析以及穆斯堡尔效应研究γ-Fe_2O_3的相变,实验结果表明在γ-Fe_2O_3结构中确实含有一定量的氢,当γ-Fe_2O_3结构中的阳离子空位被H~(1+),Co~(2+),Si~(4+),P~(5+)等离子占据时,将有利于γ-Fe_2O_3晶体结构的稳定,从而使γ-Fe_2O_3转变为α-Fe_2O_3的相变温度有所提高。 Determination of hydrogen in γ-Fe_2O_3 by thermal neutron transmission method. The phase transitions of γ-Fe_2O_3 were studied by means of DTA, magnetic analysis and Mossbauer effect. The experimental results show that there is a certain amount of hydrogen in the γ-Fe_2O_3 structure. When the cation vacancies in the γ-Fe_2O_3 structure are replaced by H_ ( 1 +), Co ~ (2 +), Si ~ (4 +) and P ~ (5+) ions will be beneficial to the stability of γ-Fe_2O_3 crystal structure, which will transform γ-Fe_2O_3 into α-Fe_2O_3 Phase transition temperature has increased.