High Blocking Temperature of Magnetization and Giant Coercivity in the Azafullerene Tb <subscript>2</subscript> @C <subscript>79</subscript> N with a Single-Electron Terbium-Terbium Bond. - OpacWWW

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Tytuł:: High Blocking Temperature of Magnetization and Giant Coercivity in the Azafullerene Tb 2 @C 79 N with a Single-Electron Terbium-Terbium Bond.
Autorzy:: Velkos G; Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069, Dresden, Germany.
Krylov DS; Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069, Dresden, Germany.; Center for Quantum Nanoscience, Institute for Basic Science (IBS), Seoul, Republic of Korea.
Kirkpatrick K; Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24061, USA.
Spree L; Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069, Dresden, Germany.
Dubrovin V; Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069, Dresden, Germany.
Büchner B; Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069, Dresden, Germany.
Avdoshenko SM; Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069, Dresden, Germany.
Bezmelnitsyn V; Luna nanoWorks, a Division of, Luna Innovation Inc., 521 Bridge St, Danville, Virginia, USA.
Davis S; Luna nanoWorks, a Division of, Luna Innovation Inc., 521 Bridge St, Danville, Virginia, USA.
Faust P; Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24061, USA.
Duchamp J; Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24061, USA.
Dorn HC; Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24061, USA.
Popov AA; Leibniz Institute for Solid State and Materials Research, Helmholtzstrasse 20, 01069, Dresden, Germany.
Źródło:: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2019 Apr 23; Vol. 58 (18), pp. 5891-5896. Date of Electronic Publication: 2019 Mar 27.
Typ publikacji:: Journal Article
Język:: English
Imprint Name(s):: Publication: <2004-> : Weinheim : Wiley-VCH
Original Publication: Weinheim/Bergstr. : New York, : Verlag Chemie ; Academic Press, c1962-
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Grant Information:: 648295 H2020 European Research Council; 1602/4-1 Deutsche Forschungsgemeinschaft; 1602/5-1 Deutsche Forschungsgemeinschaft; 748635 H2020 Marie Skłodowska-Curie Actions
Contributed Indexing:: Keywords: endohedral fullerenes; exchange coupling; metal-metal bonds; single-molecule magnets; terbium
Entry Date(s):: Date Created: 20190221 Latest Revision: 20210109
Update Code:: 20240104
PubMed Central ID:: PMC6519270
DOI:: 10.1002/anie.201900943
PMID:: 30786125
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The azafullerene Tb 2 @C 79 N is found to be a single-molecule magnet with a high 100-s blocking temperature of magnetization of 24 K and large coercivity. Tb magnetic moments with an easy-axis single-ion magnetic anisotropy are strongly coupled by the unpaired spin of the single-electron Tb-Tb bond. Relaxation of magnetization in Tb 2 @C 79 N below 15 K proceeds via quantum tunneling of magnetization with the characteristic time τ QTM =16 462±1230 s. At higher temperature, relaxation follows the Orbach mechanism with a barrier of 757±4 K, corresponding to the excited states, in which one of the Tb spins is flipped.
(© 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA.)

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High Blocking Temperature of Magnetization and Giant Coercivity in the Azafullerene Tb 2 @C 79 N with a Single-Electron Terbium-Terbium Bond.