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Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units
นักวิจัย : Shen, Lei , Yang, Shuo-Wang , Xiang, Shengchang , Liu, Tao , Zhao, Bangchuan , Ng, Man-Fai , Göettlicher, Jörg , Yi, Jiabao , Li, Sean , Wang, Lan , Ding, Jun , Chen, Banglin , Wei, Su-Huai , Feng, Yuan Ping
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : 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. , http://hdl.handle.net/10220/11263 , http://dx.doi.org/10.1021/ja3077654
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of the American chemical society
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

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.

บรรณานุกรม :
Shen, Lei , Yang, Shuo-Wang , Xiang, Shengchang , Liu, Tao , Zhao, Bangchuan , Ng, Man-Fai , Göettlicher, Jörg , Yi, Jiabao , Li, Sean , Wang, Lan , Ding, Jun , Chen, Banglin , Wei, Su-Huai , Feng, Yuan Ping . (2555). Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Shen, Lei , Yang, Shuo-Wang , Xiang, Shengchang , Liu, Tao , Zhao, Bangchuan , Ng, Man-Fai , Göettlicher, Jörg , Yi, Jiabao , Li, Sean , Wang, Lan , Ding, Jun , Chen, Banglin , Wei, Su-Huai , Feng, Yuan Ping . 2555. "Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Shen, Lei , Yang, Shuo-Wang , Xiang, Shengchang , Liu, Tao , Zhao, Bangchuan , Ng, Man-Fai , Göettlicher, Jörg , Yi, Jiabao , Li, Sean , Wang, Lan , Ding, Jun , Chen, Banglin , Wei, Su-Huai , Feng, Yuan Ping . "Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Shen, Lei , Yang, Shuo-Wang , Xiang, Shengchang , Liu, Tao , Zhao, Bangchuan , Ng, Man-Fai , Göettlicher, Jörg , Yi, Jiabao , Li, Sean , Wang, Lan , Ding, Jun , Chen, Banglin , Wei, Su-Huai , Feng, Yuan Ping . Origin of long-range ferromagnetic ordering in metal–organic frameworks with antiferromagnetic dimeric-Cu(II) building units. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.