Title: New Insight into Magnetic Interaction in Monodisperse Gd12Fe14 Metal Cluster

Authors: Xiu-Ying Zheng,Hui Zhang,Zhenxing Wang,Pengxin Liu,Ming-Hao Du,Ying-Zi Han,Rong-Jia Wei,Zhongwen Ouyang,Xiang-Jian Kong,Gui-Lin Zhuang,La-Sheng Long,Lan-Sun Zheng

Abstract:

Largest Ln-Fe metal cluster of [Gd12Fe14(μ3-OH)12(μ4-OH)6(μ4-O)12(TEOA)6(CH3COO)16(H2O)8]*(CH3COO)2(CH3CN)2* (H2O)20 (1) and core-shell monodisperse metal cluster of 1a@SiO2 (1a = [Gd12Fe14(μ3-OH)12(μ4-OH)6(μ4-O)12(TEOA)6(CH3COO)16 (H2O)8]2+) were prepared. Experimental and theoretical studies on the magnetic properties of 1 and 1a@SiO2 reveal that encapsulation of one cluster into one silica nanosphere not only effectively decreases intermolecular magnetic interaction but also significantly increases the zero-field splitting effect of the outer layer Fe3+ ions.

Full-Link: http://onlinelibrary.wiley.com/doi/10.1002/anie.201705697/full