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https://doi.org/10.1038/srep16621
Title: | Desolvation-Driven 100-Fold Slow-down of Tunneling Relaxation Rate in Co(II)-Dy(III) Single-Molecule Magnets through a Single-Crystal-to-Single-Crystal Process | Authors: | Liu, Jun-Liang Wu, Jie-Yi Huang, Guo-Zhang Chen, Yan-Cong Jia, Jian-Hua Ungur, Liviu Chibotaru, Liviu F Chen, Xiao-Ming Tong, Ming-Liang |
Keywords: | Science & Technology Multidisciplinary Sciences Science & Technology - Other Topics ION MAGNET ANISOTROPY BLOCKING SYMMETRY |
Issue Date: | 17-Nov-2015 | Publisher: | NATURE PUBLISHING GROUP | Citation: | Liu, Jun-Liang, Wu, Jie-Yi, Huang, Guo-Zhang, Chen, Yan-Cong, Jia, Jian-Hua, Ungur, Liviu, Chibotaru, Liviu F, Chen, Xiao-Ming, Tong, Ming-Liang (2015-11-17). Desolvation-Driven 100-Fold Slow-down of Tunneling Relaxation Rate in Co(II)-Dy(III) Single-Molecule Magnets through a Single-Crystal-to-Single-Crystal Process. SCIENTIFIC REPORTS 5 (1). ScholarBank@NUS Repository. https://doi.org/10.1038/srep16621 | Abstract: | Single-molecule magnets (SMMs) are regarded as a class of promising materials for spintronic and ultrahigh-density storage devices. Tuning the magnetic dynamics of single-molecule magnets is a crucial challenge for chemists. Lanthanide ions are not only highly magnetically anisotropic but also highly sensitive to the changes in the coordination environments. We developed a feasible approach to understand parts of the magneto-structure correlations and propose to regulate the relaxation behaviors via rational design. A series of Co(II)-Dy(III)-Co(II) complexes were obtained using in situ synthesis; in this system of complexes, the relaxation dynamics can be greatly improved, accompanied with desolvation, via single-crystal to single-crystal transformation. The effective energy barrier can be increased from 293cm-1 (422K) to 416cm-1 (600K), and the tunneling relaxation time can be grown from 8.5 × 10-4 s to 7.4 × 10-2s. These remarkable improvements are due to the change in the coordination environments of Dy(III) and Co(II). Ab initio calculations were performed to better understand the magnetic dynamics. | Source Title: | SCIENTIFIC REPORTS | URI: | https://scholarbank.nus.edu.sg/handle/10635/228724 | ISSN: | 2045-2322 | DOI: | 10.1038/srep16621 |
Appears in Collections: | Staff Publications Elements |
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Liu_SR_2015.cif.txt | Supporting information | 152.34 kB | Text | OPEN | None | View/Download |
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