title: Strong axiality and Ising exchange interaction suppress zero-field tunneling of magnetization of an asymmetric Dy2 single-molecule magnet.
abstract: The high axiality and Ising exchange interaction efficiently suppress quantum tunneling of magnetization of an asymmetric dinuclear Dy(III) complex, as revealed by combined experimental and theoretical investigations. Two distinct regimes of blockage of magnetization, one originating from the blockage at individual Dy sites and the other due to the exchange interaction between the sites, are separated for the first time. The latter contribution is found to be crucial, allowing an increase of the relaxation time by 3 orders of magnitude.
authors: State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China.
authors: Yun-Nan
authors: YN
authors: Guo
authors: Gong-Feng
authors: GF
authors: Xu
authors: Wolfgang
authors: W
authors: Wernsdorfer
authors: Liviu
authors: L
authors: Ungur
authors: Yang
authors: Y
authors: Guo
authors: Jinkui
authors: J
authors: Tang
authors: Hong-Jie
authors: HJ
authors: Zhang
authors: Liviu F
authors: LF
authors: Chibotaru
authors: Annie K
authors: AK
authors: Powell