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1.南京大学配位化学研究所
2.南京大学
纸质出版日期:1984-08
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汪信, 牛均宁, 陈汉文, 等. K4[Fe(CN)6]•3H2O在磁场中的穆斯堡尔谱[J]. 核技术, 1984,07(4):44.
Xin Wang, Junning Niu, Hanwen Chen, et al. Mössbauer spectra of K4[Fe (CN) 6]•3H2O in magnetic fields[J]. Nuclear techniques, 1984, 07(4): 44.
本文以
57
Co/Pd为放射源,将K
4
[Fe(CN)
6
]•3H
2
O置于磁场中,磁场方向垂直于
γ
射线方向,得到了不同磁场强度下的穆斯堡尔谱。[Fe(CN)
6
]4
-
是典型的抗磁性配离子,Fe
2+
处于
O
h
对称性的配位场中,其电子构型为,因而晶体场电场梯度和价电子电场梯度均为零,在无外磁场的情况下,得到单吸收峰的穆斯堡尔谱。当外磁场存在时,由于核Zeeman效应,铁原子核的磁偶极矩与外加磁场发生相互作用,发生了磁分裂现象。根据穆斯堡尔谱实验数据,经理论计算后得到的磁场强度(、8.2、9.6、11.9kGs)与实际施加的外磁场强度(
H
??x
=0、8.0、10.0、12.0kGs)符合很好。
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