Wu Shu-Qi, Miyazaki Yuji, Nakano Motohiro, Su Sheng-Qun, Yao Zi-Shuo, Kou Hui-Zhong, Sato Osamu
Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka Nishi-ku, Fukuoka, 819-0395, Japan.
Research Center for Structural Thermodynamics, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan.
Chemistry. 2017 Jul 26;23(42):10028-10033. doi: 10.1002/chem.201702047. Epub 2017 Jul 3.
The development of magnetic molecules with long spin reversal/decoherence times highly depends on the understanding of relaxation behavior under different external conditions. Herein, a magnetic study on a Ru complex (1) is presented. Detailed analysis of the relaxation time and the magneto-heat capacity data suggests that the resonant phonon trapping process dominates the magnetic relaxation in the crystalline sample of 1, slowing down the spin relaxation rate, as further confirmed by the measurements on a ground sample and frozen solution. Thus, it provides a rare example showing that 4d metal-centered mononuclear compounds without second-order anisotropy can display slow magnetic relaxation.
具有长自旋反转/退相干时间的磁性分子的发展高度依赖于对不同外部条件下弛豫行为的理解。在此，展示了对一种钌配合物（1）的磁性研究。对弛豫时间和磁热容量数据的详细分析表明，共振声子捕获过程主导了1的晶体样品中的磁弛豫，减慢了自旋弛豫速率，这在对研磨样品和冷冻溶液的测量中得到了进一步证实。因此，它提供了一个罕见的例子，表明没有二阶各向异性的以4d金属为中心的单核化合物可以表现出缓慢的磁弛豫。
