Zur Kenntnis der Nitride der Cererden
Zur Kenntnis der Nitride der Cererden
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DOI：
10.1002/zaac.19623170106
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发表时间：
1962-08
期刊：
影响因子：
--
通讯作者：
U. Essen;W. Klemm
中科院分区：
文献类型：
--
作者：
U. Essen;W. Klemm
磁性测量表明，在CeN的大部分的Ce粒子是在四价状态和PrN的相当数量的Me/sup 4+/离子存在。随着温度的升高，Me/sup ~（3+）/~（3+）离子所占的百分比也随之升高。因此，CeN的热膨胀系数相当高，PrN的热膨胀系数略大于LaN的热膨胀系数。稀土金属的所有氮化物都是金属性的。CeN在低温下的电导率显著低于LaN和PrN;在210和280 ° K之间，CeN的电阻下降超过10的2次方。（auth）
Magnetic measurements demonstrate that in CeN the majority of the Ce particles are in the tetravalent state and in PrN a considerable number of Me/sup 4+/ ions are present. With increasirg temperature the percentage of Me/sup 3+/ ions rises. Therefore, the coefficient of thermal expansion of CeN is considerably higher and that of PrN is somewhat greater than that of LaN. Ail nitrides of the rare earth metals are metallic. The electric conductivity of CeN at low temperature is considerably lower than that of LaN and PrN; between 210 and 280 deg K, there is a drop of the resistance of CeN of more than two powers of ten. (auth)