Porous Mn2+ Magnet with a Pt-Cl Framework: Correlation between Water Vapor Adsorption/Desorption and Slow Magnetic Relaxation
Porous Mn2+ Magnet with a Pt-Cl Framework: Correlation between Water Vapor Adsorption/Desorption and Slow Magnetic Relaxation
复制标题
具有 Pt-Cl 骨架的多孔 Mn2 磁体：水蒸气吸附/解吸与慢磁弛豫之间的相关性
DOI：
10.1002/cphc.202200618
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发表时间：
2022
期刊：
影响因子：
2.9
通讯作者：
Takaishi Shinya
中科院分区：
文献类型：
--
作者：
Nakajima Hirotaka;Uchida Kaiji;Yoshida Takefumi;Horii Yoji;Sato Tetsu;Luming Zhang;Yamashita Satoshi;Nakazawa Yasuhiro;Agulto Verdad C.;Nakajima Makoto;Breedlove Brian K.;Yamashita Masahiro;Iguchi Hiroaki;Takaishi Shinya
本文报道了铂-氯链络合物[{[Pt(en)2][PtCl2(en)2]}3][{(MnCl5)Cl3}2] ⋅ 12H2O(1)的吸水/脱附行为和动态磁性。在真空中加热，得到脱水形式[{[Pt(En)2][PtCl2(En)2]}3][{(MnCl5)Cl3}2](1Dh)。1DH3和1DH3的骨架结构相同，都经历了缓慢的磁驰豫。然而，1HD的磁弛豫时间比1的短，这意味着动态磁性受控于水蒸气的吸附/解吸。从对动态磁行为的详细分析可以看出，声子瓶颈效应对磁弛豫过程有贡献。我们从热容和导热系数的角度讨论了磁弛豫过程在脱水过程中变化的机理。
We report the water adsorption/desorption behavior and dynamic magnetic properties of the Pt−Cl chain complex [{[Pt(en)2][PtCl2(en)2]}3][{(MnCl5)Cl3}2] ⋅ 12H2O (1). Upon heating1in a vacuum, we obtained the dehydrated form [{[Pt(en)2][PtCl2(en)2]}3][{(MnCl5)Cl3}2] (1DH). The framework structures of1and1DHare identical, and both complexes underwent slow magnetic relaxation. However, the magnetic relaxation times for1DHwere shorter than those for1, meaning that the dynamic magnetic properties were controlled upon water vapor adsorption/desorption. From detailed analyses of the dynamic magnetic behavior, a phonon‐bottleneck effect contributes to the magnetic relaxation processes. We discuss the mechanism for the changes in the magnetic relaxation processes upon dehydration in terms of the heat capacity and thermal conductivity.