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Title:
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Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate.
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Authors:
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Kanetomo T; Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, Japan.
Kihara T; Institute for Materials Research, Tohoku University , Sendai, Miyagi 980-8577, Japan.
Miyake A; Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan.
Matsuo A; Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan.
Tokunaga M; Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan.
Kindo K; Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan.
Nojiri H; Institute for Materials Research, Tohoku University , Sendai, Miyagi 980-8577, Japan.
Ishida T; Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, Japan.
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Source:
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Inorganic chemistry [Inorg Chem] 2017 Mar 20; Vol. 56 (6), pp. 3310-3314. Date of Electronic Publication: 2017 Mar 10.
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Publication Type:
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Journal Article
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Language:
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English
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Imprint Name(s):
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Original Publication: [Easton, Pa.] American Chemical Society.
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Entry Date(s):
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Date Created: 20170311 Date Completed: 20180216 Latest Revision: 20180216
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Update Code:
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20240104
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DOI:
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10.1021/acs.inorgchem.6b02685
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PMID:
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28281348
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The Gd-radical complex [Gd III (hfac) 3 (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.