Kanetomo Takuya, Kihara Takumi, Miyake Atsushi, Matsuo Akira, Tokunaga Masashi, Kindo Koichi, Nojiri Hiroyuki, Ishida Takayuki
Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, Japan.
Institute for Materials Research, Tohoku University , Sendai, Miyagi 980-8577, Japan.
Inorg Chem. 2017 Mar 20;56(6):3310-3314. doi: 10.1021/acs.inorgchem.6b02685. Epub 2017 Mar 10.
The Gd-radical complex [Gd(hfac)(6bpyNO)] (6bpyNO = 2,2'-bipyridin-6-yl tert-butyl nitroxide; Hhfac = 1,1,1,5,5,5-hexafluoropentane-2,4-dione) showed a magnetization jump at 52 T observed in a pulsed-field facility, corresponding to an exchange coupling constant of -17.4 K. Furthermore, hysteretic behavior due to a relatively slow magnetization reversal was recorded around 2 T. From the high-frequency EPR study, the exchange coupling between Gd and radical spins accompanies an anisotropic character, which is responsible for both the broad jump and the slow magnetization reversal.
钆自由基配合物[Gd(hfac)(6bpyNO)]（6bpyNO = 2,2'-联吡啶-6-基叔丁基氮氧化物；Hhfac = 1,1,1,5,5,5-六氟戊烷-2,4-二酮）在脉冲场装置中观察到在52 T时出现磁化跳跃，对应于-17.4 K的交换耦合常数。此外，在2 T左右记录到由于相对缓慢的磁化反转导致的磁滞行为。从高频电子顺磁共振研究来看，钆和自由基自旋之间的交换耦合具有各向异性特征，这导致了宽磁化跳跃和缓慢的磁化反转。
