Study of the FeII ion role in the magnetic properties of the AFM ring Cr7Fe using Mossbauer spectroscopy

被引：3
作者：
Cianchi, L. [1 ]
Del Giallo, F. [1 ]
Lantieri, M. [1 ]
Moretti, P. [1 ]
Spina, G. [2 ,3 ]
Timco, G. [4 ]
Winpenny, R. [4 ]
机构：
[1] CNR, Ist Sistemi Complessi, I-50019 Sesto Fiorentino, FI, Italy
[2] Univ Firenze, INFM, CNISM, I-50019 Sesto Fiorentino, FI, Italy
[3] Univ Firenze, Dip Fis, I-50019 Sesto Fiorentino, FI, Italy
[4] Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England
来源：
SOLID STATE COMMUNICATIONS | 2010年 / 150卷 / 19-20期
关键词：
Single molecule magnets; Magnetic properties; Mossbauer spectroscopy; WHEELS;
D O I：
10.1016/j.ssc.2010.03.011
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In recent years the synthesis of antiferromagnetic rings traced a path to the observation of interesting quantum coherence phenomena in heterometallic Single Molecule Magnets. Because of the presence of different magnetic centers, it is crucial to understand the distribution of the molecular spin on all the sites. Fe-57 Mossbauer spectroscopy is an efficient and powerful technique to contribute to this knowledge in antiferromagnetic wheels containing iron ions. We analyze the Cr7FeII wheel: the Mossbauer line shape evolution of low temperature spectra (2.1 K) at different external fields is illustrated and the mean spin value of the iron ion is evaluated. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：903 / 905
页数：3
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