Magnetic volcanos in gadolinium Langmuir-Blodgett films

Tishin, A.M.; Snigirev, O.V.; Khomutov, G.B.; Gudoshnikov, S.A.; Bohr, J.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Web of Science, Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

Авторы: Tishin A.M., Snigirev O.V., Khomutov G.B., Gudoshnikov S.A., Bohr J.
Журнал: Journal of Magnetism and Magnetic Materials
Том: 234
Номер: 3
Год издания: 2001
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 499
Последняя страница: 504
Аннотация: Magnetic, structural and electronic properties of Langmuir-Blodgett films with incorporated Gd3+ ions has been detected using a scanning DC SQUID microscope, scanning electron microscope and X-ray diffraction. The magnetic images of 28 and 50 layer thick films at 77 K have been obtained after in-plane and out-of-plane pre-magnetization in a field of 1.4T at 300K. Randomly placed "magnetic volcanos" with a remanent magnetic moment of the order of 10(-13) A m(2) was observed. A decay of the remanent magnetization with a characteristic time of about 120 h was observed. It is suggested that the magnetic order is relatively long ranged, and that topological defects (vortices) lead to the observed out-of-plane field lines, and are responsible for the magnetic volcanos. Finally, it is hypothesized that a similar topology of field lines is responsible for superconductivity as observed in ceramic high-T-C superconductors. (C) 2001 Elsevier Science B.V. All rights reserved.
Добавил в систему: Снигирев Олег Васильевич

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Magnetic volcanos in gadolinium Langmuir-Blodgett filmsстатья

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