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Molecular magnetic materials
Języki publikacji
Abstrakty
The „molecular” term appears more and more often in the materials chemistry. The Nobel Prize in 2016 was awarded to Jean-Pierre Sauvage, Sir J. Fraser Stoddart and Bernard R. Feringa „for the design and synthesis of molecular machines”. Magnetism in molecular scale, also known as molecular nanomagnetism, has been developing intensively since the second half of the last century. This branch of science involves the magnetic properties of coordination compounds of d- and f-electron metals. The paper presents results of the magnetic studies of molecular magnets of copper(II) and dysprosium(III), which have been pursuing in two doctoral thesis. The compounds form trinuclear and triangular molecules. The spin frustration phenomenon observed in the triangular relationship of copper(II) has been described. Since dysprosium(III) ion is characterized by a large magnetic anisotropy, the triangular, trinuclear coordination compound of dysprosium(III) of the formula [Dy3L5HLCl4]∙HL (where HL = 2-methoxyethanol) presents the characteristic properties of molecular magnets (SMMs) behavior. Two values of the energy barier were determined as Ueff/kB = 84,6 K and 31,2 K with the corresponding relaxation times τ0 = 1,82·10-6 s and 5,19·10-5 s. The data are probably attributed to different geometry of the coupled dysprosium ions.
Wydawca
Czasopismo
Rocznik
Tom
Strony
523--541
Opis fizyczny
Bibliogr. 42 poz., schem., wykr.
Twórcy
autor
- Uniwersytet Wrocławski, Wydział Chemii, ul. Joliot-Curie 14, 50-383 Wrocław
autor
- Uniwersytet Wrocławski, Wydział Chemii, ul. Joliot-Curie 14, 50-383 Wrocław
autor
- Uniwersytet Wrocławski, Wydział Chemii, ul. Joliot-Curie 14, 50-383 Wrocław
autor
- Uniwersytet Wrocławski, Wydział Chemii, ul. Joliot-Curie 14, 50-383 Wrocław
autor
- Uniwersytet Wrocławski, Wydział Chemii, ul. Joliot-Curie 14, 50-383 Wrocław
Bibliografia
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Uwagi
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-693539b0-0000-4f86-8ecf-0bf74ff32279