title: A heterometallic Fe(II)-Dy(III) single-molecule magnet with a record anisotropy barrier.
abstract: A record anisotropy barrier (319 cm(-1) ) for all d-f complexes was observed for a unique Fe(II) -Dy(III) -Fe(II) single-molecule magnet (SMM), which possesses two asymmetric and distorted Fe(II) ions and one quasi-D5h Dy(III) ion. The frozen magnetization of the Dy(III) ion leads to the decreased Fe(II) relaxation rates evident in the Mössbauer spectrum. Ab initio calculations suggest that tunneling is interrupted effectively thanks to the exchange doublets.
authors.affiliation: Key Laboratory of Bioinorganic and Synthetic Chemistry of the Ministry of Education, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275 (P. R. China) http://ce.sysu.edu.cn/bisc/members/200809/6440.html.
authors.forename: Jun-Liang
authors.initials: JL
authors.lastname: Liu
authors.forename: Jie-Yi
authors.initials: JY
authors.lastname: Wu
authors.forename: Yan-Cong
authors.initials: YC
authors.lastname: Chen
authors.forename: Valeriu
authors.initials: V
authors.lastname: Mereacre
authors.forename: Annie K
authors.initials: AK
authors.lastname: Powell
authors.forename: Liviu
authors.initials: L
authors.lastname: Ungur
authors.forename: Liviu F
authors.initials: LF
authors.lastname: Chibotaru
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Chen
authors.forename: Ming-Liang
authors.initials: ML
authors.lastname: Tong
keywords: Mössbauer spectroscopy; ab initio calculations; anisotropy barriers; ferromagnetic interactions; magnetic properties; single-molecule magnet