Phase Transition of Li2O–Fe2O3 System. II. Thermal and Electric Properties of Lithium Ferrospinel LiFe5O8
Phase Transition of Li2O–Fe2O3 System. II. Thermal and Electric Properties of Lithium Ferrospinel LiFe5O8
复制标题
Li2O-Fe2O3 体系的相变 II。LiFe5O8 的热性能和电性能。
DOI：
10.1246/bcsj.31.113
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
Eizo Kato
中科院分区：
文献类型：
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作者：
Eizo Kato
差热分析、热膨胀系数和d. C.对锂铁尖晶石进行了电阻测试，并将结果与锂铁氧体的结果进行了比较。结论如下：（1）在相变过程中，材料的热学和电学性质发生了异常变化，出现了磁滞回线。(2)LiFe5.86.O8的转变温度为745±1°C，通过热测量和电测量获得。真实转变温度被确定为750±1°C。对于化学计量试样。(3)结果表明，该相变速度比铁酸锂快。(4)热性质在磁居里点处发生变化，约。六百三十五度。
The measurements of differential thermal analysis, thermal expansion and d. c. electric resistance for lithium ferrospinel were performed ; the results were discussed in relation to these for the lithium ferrite. Conclusions are as follows; (1) Anomalous changes in the thermal and the electric properties take place during the transition and the hysteresis loops are observed. (2) The transition temperature for LiFe5.86.O8, 745±1°C., is obtained from both thermal and electric measurements. The true transition temperature is determined to be 750±1°C. for the stoichiometric specimen. (3) It is verified that the transition velocity is more rapid than that of lithium ferrite. (4) The thermal properties change at the magnetic Curie point, ca. 635°C.