Magnetic susceptibility of Al-Co-R (R = Ce, Dy) glass-forming alloys at high temperatures / Uporov S. A.,Uporova N. S.,Sidorov V. E.,Shunyaev K. Yu. // HIGH TEMPERATURE. - 2010. - V. 48, l. 4. - P. 497-505.

ISSN/EISSN:

0018-151X / нет данных

Type:

Article

Abstract:

The magnetic susceptibility of Al-Co-Ce and Al-Co-Dy amorphous alloys is investigated in a wide range of temperatures (t = 20-1700 A degrees C) and magnetic fields (B = 0.3-1.3 T). A weak gC(B) dependence in the entire temperature range and an anomalous increase in susceptibility beginning above the melting temperature of Al(2)R compound are revealed for all investigated compositions. The experimental data are used to calculate the parameters of the electronic structure of alloys and to estimate the size of super-paramagnetic inclusions. It follows from the experimental data that cobalt atoms are present in these alloys in the nonmagnetic state. It is found that the values of effective magnetic moments on cerium and dysprosium atoms are significantly lower than those for R(3+) ions and independent of the chemical composition of alloys. The results are discussed assuming the existence in melts of microregions formed by quasi-molecules of Al(2)R.

Author keywords:

INTERMETALLIC COMPOUNDS; ALUMINUM; CRYSTALLIZATION; AA2024-T3; PHASE

DOI:

10.1134/S0018151X10040061

Web of Science ID:

ISI:000280943200006

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	AUG
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
Keywords-Plus	INTERMETALLIC COMPOUNDS; ALUMINUM; CRYSTALLIZATION; AA2024-T3; PHASE
Research-Areas	Physics
Web-of-Science-Categories	Physics, Applied
ResearcherID-Numbers	Uporov, Sergey/A-5352-2014 Shunyaev, Konstantin/A-3916-2014
ORCID-Numbers	Uporov, Sergey/0000-0002-7157-201X
Funding-Acknowledgement	Russian Foundation for Basic Research {[}07-02-01049, 07-03-96102]; Federal Target-Oriented Program {[}NK-255P/1]
Funding-Text	This study was supported by the Russian Foundation for Basic Research (grant nos. 07-02-01049, 07-03-96102) and by the Federal Target-Oriented Program (NK-255P/1).
Number-of-Cited-References	24
Usage-Count-Since-2013	4
Journal-ISO	High Temp.
Doc-Delivery-Number	639AM