【摘要】 对自制的低功耗Mn-Zn铁氧体样品,用穆斯堡尔谱研究了其结构和预烧过程中的相变情况,得出以下结论:（1）高温烧结样品是含过量铁的Mn-Zn铁氧体,有较典型的穆斯堡尔参数,其分子式可写为Mn_0.70,Zn_。.23Fe_2.07O₄;（2）在预烧过程中出现的双线子谱面积随相变进程有特征变化,可作为相变进程的标识;（3）在预烧温度1040℃下,已初步达到形成Mn-Zn铁氧体的相变前期;（4）预烧过程中升温中断或在较低温度下反复预烧不利于正常相变;（5）原料Fe₂O₃穆斯堡尔参数比较特殊,对预烧样品谱有明显影响,但对高温烧结样品影响不显著。更多还原

【Abstract】 The samples of Mn-Zn ferrite having characteristic of low power expense, were obtained. Its structure and phase transformation in pre-sintering process by means of Mossbauer spectroscopy were studied. The conclusions are as follows:(1) The sample sintered at high temperature contains excess iron and has typical Mossbauer parameters. Its formula can be written as Mn0.70Zn0.23Fe2.07O4,. (2) The doublet subspectrum arised during thermal transformation varies with the process of the phase transformation. It serves as a mark of the course of the transformation. (3) The pre-sintering temperature 1040C has primarily approached to the earlier stage of phase transformation to form Mn-Zn ferrite. (4) The breaks in heating and pre-sintering repeatedly at low temperature are unfavourable to phase transformation. (5) The Mossbauer parameters of the raw material Fe2O3 are markedly different from that in literature[9]. There is obvious influence on the samples pre-sintered but little influence on the sample sintered at high temperature.更多还原