The experimental results show that saturation magnetization ss increases at the beginning and then decreases slowly, while coercive strength Hc decreases monotonously with increasing x, which is very beneficial to high-density magnetic recording. 实验结果表明,随替代量x的增大,比饱和磁化强度ss先增大后缓慢下降,而矫顽力Hc单调减小,这非常有利于用作高密度磁记录材料。