Two lanthanide(Ⅲ)-copper(Ⅱ) chains based on[Cu_2Ln_2]clusters exhibiting high stability,magnetocaloric effect and slow magnetic relaxation  

作　　者：Xiao-Hong Miao Song-De Han Sui-Jun Liu Xian-He Bu 

机构地区：[1]Department of Chemistry and TKL of Metal-and Molecule-Based Material Chemistry,and Collaborative Innovation Center of Chemical Science and Engineering(Tianjin).Nankai University

出　　处：《Chinese Chemical Letters》2014年第6期829-834,共6页中国化学快报（英文版）

基　　金：financially supported by the 973 Program of China(Nos.2012CB821700 and 2014CB845600);the NNSF of China(Nos.21031002 and 21290171);MOE Innovation Team (No.IRT13022) of China

摘　　要：Two 3d-4f heterometallic one-dimensional chains with neutral 4,4＇-bipyridine ligands as linkers and[Cu2Ln2] clusters （Ln = Gd for 1, Dy for 2） as nodes have been hydrothermally synthesized and structurally characterized. Magnetic studies indicate that complex 1 exhibits a relatively large magnetocaloric effect, with an entropy change -△Smax m= 24.8 J kg 1 K^-1, whilst, complex 2 features slow magnetic relaxation at low temperature.Two 3d-4f heterometallic one-dimensional chains with neutral 4,4＇-bipyridine ligands as linkers and[Cu2Ln2] clusters （Ln = Gd for 1, Dy for 2） as nodes have been hydrothermally synthesized and structurally characterized. Magnetic studies indicate that complex 1 exhibits a relatively large magnetocaloric effect, with an entropy change -△Smax m= 24.8 J kg 1 K^-1, whilst, complex 2 features slow magnetic relaxation at low temperature.

关 键 词：3d-4f High stability Magnetocaloric effect Slow magnetic relaxation 

分 类 号：O611.3[理学—无机化学]