TY - JOUR
T1 - Quantum tunneling of magnetization via well-defined Dy-Cu exchange coupling in a ferrimagnetic high-spin [Dy4Cu] single-molecule magnet
AU - Ueki, Sohei
AU - Ishida, Takayuki
AU - Nogami, Takashi
AU - Choi, Kwang Yong
AU - Nojiri, Hiroyuki
N1 - Funding Information:
This work was partly supported by Grants-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan and the Inter-University Cooperative Research Program of the Institute for Materials Research, Tohoku University.
PY - 2007/6/8
Y1 - 2007/6/8
N2 - A centrosymmetric rectangular complex [Dy4Cu] was prepared from dysprosium(III) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate and copper(II) dimethylglyoximate. From magnetic studies, the Dy magnetic moments are all aligned parallel at the ground state via antiferromagnetic superexchange interaction with the central Cu spin. In pulsed-field magnetization measurements at 0.5 K, complex [Dy4Cu] exhibited magnetization steps with hysteresis, which is typical of a single-molecule magnet. This behavior is explained in terms of a simple Ising model together with well-defined Dy-Cu exchange coupling (-0.64 K).
AB - A centrosymmetric rectangular complex [Dy4Cu] was prepared from dysprosium(III) 1,1,1,5,5,5-hexafluoropentane-2,4-dionate and copper(II) dimethylglyoximate. From magnetic studies, the Dy magnetic moments are all aligned parallel at the ground state via antiferromagnetic superexchange interaction with the central Cu spin. In pulsed-field magnetization measurements at 0.5 K, complex [Dy4Cu] exhibited magnetization steps with hysteresis, which is typical of a single-molecule magnet. This behavior is explained in terms of a simple Ising model together with well-defined Dy-Cu exchange coupling (-0.64 K).
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U2 - 10.1016/j.cplett.2007.04.063
DO - 10.1016/j.cplett.2007.04.063
M3 - Article
AN - SCOPUS:34248682416
SN - 0009-2614
VL - 440
SP - 263
EP - 267
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -