Linear 3d-4f compounds: synthesis, structure, and determination of the d-f magnetic interaction

被引:41
|
作者
Wu, Jianfeng [1 ,2 ]
Zhao, Lang [1 ]
Zhang, Peng [1 ,2 ]
Zhang, Li [1 ,2 ]
Guoa, Mei [1 ,2 ]
Tang, Jinkui [1 ]
机构
[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100039, Peoples R China
基金
中国国家自然科学基金;
关键词
SINGLE-MOLECULE MAGNET; ANISOTROPY BARRIER; COMPLEXES; RELAXATION; BLOCKING; SUBSTITUTION; HYSTERESIS; CLUSTERS; EXCHANGE; BEHAVIOR;
D O I
10.1039/c5dt01382h
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A family of [RE2M2L2(BA)(6)] (RE = Gd, Tb, Dy, Y; M = Co, Ni, Cu, Zn; L = 1,2-bis(2-hydroxy-3-methoxybenzylidene)hydrazine; BA = benzoic acid) complexes were synthesized and structurally and magnetically characterized. The magnetic interactions between spin centers were systematically investigated. The interactions of M-M (M = Co, Ni and Cu) and Gd-Ni/Cu were extracted from the fitting of the experimental data of Y2M2 (M = Co, Ni and Cu) and Gd2M2 (M = Ni and Cu) derivatives, respectively. Furthermore, the Ln-M interactions were qualitatively analyzed by deducting the M-M coupling and the contribution of the crystal-field effects of the Ln(III) ion from the total magnetic susceptibility of Ln(2)M(2) (Ln = Dy and Tb) compounds. In addition, complex [Dy2Zn2L2(BA)(6)] shows field induced single molecular magnet behavior profiting from the isolated anisotropic dysprosium ions.
引用
收藏
页码:11935 / 11942
页数:8
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