High Magnetic Field Study of Chromium Trimer Complexes below 1 K
High Magnetic Field Study of Chromium Trimer Complexes below 1 K
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1 K 以下铬三聚体配合物的高磁场研究
DOI：
10.1143/jpsj.57.1428
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
M. Date
中科院分区：
文献类型：
--
作者：
T. Yosida;M. Morita;M. Date
两种三核铬盐在高达350克埃的脉冲磁场中被磁化。实验在1k以下进行，使用放置在直径6cm的大口径磁铁中的3he低温恒温器。在丙酸铬中，随着磁化曲线的逐步增加，在272 kOe处观察到基态从S =1/2到S =3/2的交叉。在0.6 K下对cr -乙酸盐的测定表明，在276和314 kOe处的增加由两个步骤组成，对应于该化合物中磁性三聚体的两个不相等的位点。讨论了三聚体内和三聚体间交换作用的大小。
Magnetizations of two trinuclear chromium salts are measured in pulsed magnetic fields up to 350 kOe. The experiment is done below 1 K using a 3 He cryostat arranged in a large-bore magnet of 6 cm in diameter. In Cr-propionate, the ground state crossover from S =1/2 to S =3/2 is observed at 272 kOe as a stepwise increase in the magnetization curve. The measurement in Cr-acetate at 0.6 K shows that the increase consists of two steps at 276 kOe and 314 kOe corresponding to two inequivalent sites of magnetic trimers in this compound. The magnitudes of the intra- and inter-trimer exchange interactions are discussed.