Spin-glass state of Fe/Cr multilayer structures with ultrathin iron layers / Drovosekov A. B.,Kreines N. M.,Kholin D. I.,Korolev A. V.,Milyaev M. A.,Romashev L. N.,Ustinov V. V. // JETP LETTERS. - 2008. - V. 88, l. 2. - P. 118-122.

ISSN/EISSN:

0021-3640 / нет данных

Type:

Article

Abstract:

The evolution of the magnetic properties of Fe/Cr Superlattices with a decrease in the nominal thickness of the iron layers down to atomic dimensions at which these layers are not continuous has been analysed. Investigations have been carried out with multilayer samples with Fe-layer thicknesses in a range of 2-6 angstrom and Cr-layer thicknesses of 10 and 20 angstrom. It has been found that the System with various temperatures exhibits various magnetic phases-superparmagnetic. magnetically ordered, and nonergodic-characterized by the dependence of the magnetization of the sample on its magnetic prehistory. It has been shown that the observed nonergodic phase has the properties of a spin glass. A qualitative phase diagram of the magnetic states of the system has been obtained.

Author keywords:

NANOPARTICLES; MAGNETIZATION

DOI:

10.1134/S0021304008140105

Web of Science ID:

ISI:000259641800010

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUL 25
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	NANOPARTICLES; MAGNETIZATION
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	drovosekov@kapitza.ras.ru
ResearcherID-Numbers	Milyaev, Mikhail/J-8070-2013 Alexander, Korolev/K-3036-2013 Ustinov, Vladimir/G-7501-2011 Romashev, Lazar/J-7644-2013
ORCID-Numbers	Milyaev, Mikhail/0000-0001-7828-3571 Alexander, Korolev/0000-0002-5104-3997 Ustinov, Vladimir/0000-0002-5155-7947 Romashev, Lazar/0000-0002-6051-4543
Funding-Acknowledgement	Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools {[}NSh-6122.2008.2]; Russian Foundation for Basic Research {[}07-02-01252, 07-02-01289]
Funding-Text	We are grateful to A.A. Mukhin and V.Yu. Ivanov (Prokhorov Gcneral Physics Institute, Russian Academy of Sciences) for placing the SQUID magnetometer at our disposal for measuring the low-frequency characteristics of the samples, as well as to V.V. Tugushev and V.I. Marchenko for stimulating discrussions of the measurement results. This work was supported by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. NSh-6122.2008.2) and the Russian Foundation for Basic Research (project nos. 07-02-01252 and 07-02-01289).
Number-of-Cited-References	17
Usage-Count-Since-2013	4
Journal-ISO	Jetp Lett.
Doc-Delivery-Number	354LT