Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units
Even though metal–organic frameworks (MOFs) derived from antiferromagnetic dimeric-Cu(II) building units and nonmagnetic molecular linkers are known to exhibit unexpected ferromagnetic behavior, a comprehensive understanding of the underlying mechanism remains elusive. Using a combined theoretical a...
| Main Authors: | , , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/97602 http://hdl.handle.net/10220/11263 |
| _version_ | 1826113112595496960 |
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| author | Göettlicher, Jörg Yi, Jiabao Li, Sean Wang, Lan Ding, Jun Chen, Banglin Wei, Su-Huai Feng, Yuan Ping Shen, Lei Yang, Shuo-Wang Xiang, Shengchang Liu, Tao Zhao, Bangchuan Ng, Man-Fai |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Göettlicher, Jörg Yi, Jiabao Li, Sean Wang, Lan Ding, Jun Chen, Banglin Wei, Su-Huai Feng, Yuan Ping Shen, Lei Yang, Shuo-Wang Xiang, Shengchang Liu, Tao Zhao, Bangchuan Ng, Man-Fai |
| author_sort | Göettlicher, Jörg |
| collection | NTU |
| description | Even though metal–organic frameworks (MOFs) derived from antiferromagnetic dimeric-Cu(II) building units and nonmagnetic molecular linkers are known to exhibit unexpected ferromagnetic behavior, a comprehensive understanding of the underlying mechanism remains elusive. Using a combined theoretical and experimental approach, here we reveal the origin of the long-range ferromagnetic coupling in a series of MOFs, constructed from antiferromagnetic dimeric-Cu(II) building blocks. Our studies show that the strong localization of copper vacancy states favors spontaneous spin polarization and formation of local moment. These copper vacancy-induced moments are coupled via the itinerant electrons in the conjugated aromatic linkers to establish a long-range ferromagnetic ordering. The proposed mechanism is supported by direct experimental evidence of copper vacancies and the magnetic hysteresis (M-H) loops. |
| first_indexed | 2024-10-01T03:17:51Z |
| format | Journal Article |
| id | ntu-10356/97602 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:17:51Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/976022020-03-07T12:31:22Z Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units Göettlicher, Jörg Yi, Jiabao Li, Sean Wang, Lan Ding, Jun Chen, Banglin Wei, Su-Huai Feng, Yuan Ping Shen, Lei Yang, Shuo-Wang Xiang, Shengchang Liu, Tao Zhao, Bangchuan Ng, Man-Fai School of Physical and Mathematical Sciences Even though metal–organic frameworks (MOFs) derived from antiferromagnetic dimeric-Cu(II) building units and nonmagnetic molecular linkers are known to exhibit unexpected ferromagnetic behavior, a comprehensive understanding of the underlying mechanism remains elusive. Using a combined theoretical and experimental approach, here we reveal the origin of the long-range ferromagnetic coupling in a series of MOFs, constructed from antiferromagnetic dimeric-Cu(II) building blocks. Our studies show that the strong localization of copper vacancy states favors spontaneous spin polarization and formation of local moment. These copper vacancy-induced moments are coupled via the itinerant electrons in the conjugated aromatic linkers to establish a long-range ferromagnetic ordering. The proposed mechanism is supported by direct experimental evidence of copper vacancies and the magnetic hysteresis (M-H) loops. 2013-07-12T02:22:52Z 2019-12-06T19:44:29Z 2013-07-12T02:22:52Z 2019-12-06T19:44:29Z 2012 2012 Journal Article Shen, L., Yang, S. W., Xiang, S., Liu, T., Zhao, B., Ng, M. F., et al. (2012). Origin of Long-Range Ferromagnetic Ordering in Metal–Organic Frameworks with Antiferromagnetic Dimeric-Cu(II) Building Units. Journal of the American Chemical Society, 134(41), 17286-17290. https://hdl.handle.net/10356/97602 http://hdl.handle.net/10220/11263 10.1021/ja3077654 en Journal of the American chemical society © 2012 American Chemical Society. |
| spellingShingle | Göettlicher, Jörg Yi, Jiabao Li, Sean Wang, Lan Ding, Jun Chen, Banglin Wei, Su-Huai Feng, Yuan Ping Shen, Lei Yang, Shuo-Wang Xiang, Shengchang Liu, Tao Zhao, Bangchuan Ng, Man-Fai Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units |
| title | Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units |
| title_full | Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units |
| title_fullStr | Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units |
| title_full_unstemmed | Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units |
| title_short | Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units |
| title_sort | origin of long range ferromagnetic ordering in metal organic frameworks with antiferromagnetic dimeric cu ii building units |
| url | https://hdl.handle.net/10356/97602 http://hdl.handle.net/10220/11263 |
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