Examination of even–odd distinction in magnetic susceptibility of silver nanoclusters on silver bromide in light of the Kubo effect
Examination of even–odd distinction in magnetic susceptibility of silver nanoclusters on silver bromide in light of the Kubo effect
复制标题
根据久保效应检查溴化银上银纳米团簇磁化率的奇偶差异
DOI：
10.1063/1.1452767
复制
发表时间：
2002
影响因子：
3.2
通讯作者：
T. Tani
中科院分区：
文献类型：
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作者：
T. Tani
通过光照和还原在八面体AgBr微晶体上形成银纳米团簇，并利用Kubo效应对其奇偶区别进行表征。电镜观察发现，光作用下每个微晶只能形成一个银团簇，而还原作用下每个微晶可以形成多个银团簇。结果表明，在平均尺寸和浓度相同的情况下，光形成银团簇的平均磁化率比还原形成银团簇的平均磁化率大3个数量级以上。根据Kubo理论[R]。J.物理学家久保。Soc。[Jpn. 17, 740(1962)]，银纳米团簇应该是电中性的，由奇数银原子组成的团簇（即奇数团簇）应该是顺磁性的，而偶数团簇应该是反磁性的。因此可以认为，还原形成的星团是偶星团，而光形成的星团包含许多奇星团。根据…
Silver nanoclusters were formed on octahedral AgBr microcrystals by light and reduction, and characterized by examining their even–odd distinction in light of the Kubo effect. It was observed with an electron microscope that only one Ag cluster per microcrystal was formed by light, while many clusters per microcrystal were formed by reduction. It was found that the average magnetic susceptibility of Ag clusters formed by light was more than 3 orders of magnitude larger than that of Ag clusters formed by reduction when the average size and concentration were the same between them. According to the Kubo theory [R. Kubo, J. Phys. Soc. Jpn. 17, 740 (1962)], Ag nanoclusters should be electrically neutral, and the clusters composed of odd number of Ag atoms (i.e., odd clusters) should be paramagnetic, while even clusters should be diamagnetic. It is therefore considered that the clusters formed by reduction were even clusters, while the clusters formed by light contained many odd clusters. In accord with the Ku...