Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate

Takuya Kanetomo; Takumi Kihara; Atsushi Miyake; Akira Matsuo; Masashi Tokunaga; Koichi Kindo; Hiroyuki Nojiri; Takayuki Ishida

doi:10.1021/acs.inorgchem.6b02685

Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate

Takuya Kanetomo, Takumi Kihara, Atsushi Miyake, Akira Matsuo, Masashi Tokunaga, Koichi Kindo, Hiroyuki Nojiri, Takayuki Ishida

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	3310-3314
Number of pages	5
Journal	Inorganic Chemistry
Volume	56
Issue number	6
DOIs	https://doi.org/10.1021/acs.inorgchem.6b02685
Publication status	Published - 2017 Mar 20

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title = "Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate",

abstract = "The Gd-radical complex [GdIII(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.",

author = "Takuya Kanetomo and Takumi Kihara and Atsushi Miyake and Akira Matsuo and Masashi Tokunaga and Koichi Kindo and Hiroyuki Nojiri and Takayuki Ishida",

note = "Funding Information: T.K. was supported by the JSPS program for Research Fellowships for Young Scientist (No. 15J11497). Part of this work was performed at the Institute for Materials Research, Tohoku University (Project Nos. 16H0032 and 16K0028), and the joint research in the Institute for Solid State Physics, the University of Tokyo. Publisher Copyright: {\textcopyright} 2017 American Chemical Society.",

year = "2017",

month = mar,

day = "20",

doi = "10.1021/acs.inorgchem.6b02685",

language = "English",

volume = "56",

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T1 - Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate

AU - Kanetomo, Takuya

AU - Kihara, Takumi

AU - Miyake, Atsushi

AU - Matsuo, Akira

AU - Tokunaga, Masashi

AU - Kindo, Koichi

AU - Nojiri, Hiroyuki

AU - Ishida, Takayuki

N1 - Funding Information: T.K. was supported by the JSPS program for Research Fellowships for Young Scientist (No. 15J11497). Part of this work was performed at the Institute for Materials Research, Tohoku University (Project Nos. 16H0032 and 16K0028), and the joint research in the Institute for Solid State Physics, the University of Tokyo. Publisher Copyright: © 2017 American Chemical Society.

PY - 2017/3/20

Y1 - 2017/3/20

N2 - The Gd-radical complex [GdIII(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.

AB - The Gd-radical complex [GdIII(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.

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VL - 56

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EP - 3314

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 6

ER -

Giant Exchange Coupling Evidenced with a Magnetization Jump at 52 T for a Gadolinium-Nitroxide Chelate

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