The Magnetic Susceptibility of Neptunium Oxide and Carbide between 4.2° and 350°K
The Magnetic Susceptibility of Neptunium Oxide and Carbide between 4.2° and 350°K
复制标题
氧化镎和碳化物在 4.2° 到 350°K 之间的磁化率
DOI：
10.1063/1.1709662
复制
发表时间：
1967
影响因子：
3.2
通讯作者：
D. Lam
中科院分区：
文献类型：
--
作者：
J. Ross;D. Lam
在4.2 ~ 350°K范围内测量了镎的二氧化物和一碳化物的磁化率。二氧化镎的反磁化率在60°K以上的温度下呈线性，有效顺磁矩为2.95 μB。在25°K处观察到磁化率-温度曲线的峰值，与在NpO 2比热中观察到的最大值一致。一碳化镎在200°K以下变成铁磁性。磁化率-温度曲线在310°K处的峰值表明从磁有序排列到顺磁排列的转变。对于铁磁态和顺磁态，每NpC单位的有效磁矩分别为1.4 μB和3.37 μB。
The magnetic susceptibilities of the dioxide and monocarbide of neptunium have been measured from 4.2 to 350°K. The inverse susceptibility of neptunium dioxide is linear in temperature above 60°K with an effective paramagnetic moment of 2.95 μB. A peak in the susceptibility‐vs‐temperature curve is observed at 25°K, in agreement with the maximum observed in the specific heat of NpO2. The neptunium monocarbide becomes ferromagnetic below 200°K. A peak in the susceptibility‐vs‐temperature curve at 310°K indicates a transition from a magnetically ordered arrangement to a paramagnetic one. The effective moment per NpC unit for the ferromagnetic and paramagnetic states is 1.4 μB and 3.37 μB, respectively.