Magnetization jumps in nanostructured temperatures Nd-Fe-B alloy at low / Neznakhin D. S.,Bolyachkin A. S.,Volegov A. S.,Markin P. E.,Andreev S. V.,Kudrevatykh N. V. // JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - 2015. - V. 377, l. . - P. 477-479.

ISSN/EISSN:

0304-8853 / 1873-4766

Type:

Article

Abstract:

Magnetic properties of the nanostructured isotropic alloy on the base of Nd2Fe14B type phase were investigated at low temperatures. The evaluated average grain size of this phase was much smaller than its critical single domain diameter. Hence the magnetization and demagnetization processes were expected to be performed by coherent magnetization rotation. For such coercivity type system magnetization jumps were revealed on the demagnetization hysteresis loop branch in the vicinity of the coercive force at temperatures below 4 K. It was shown that magnetization jumps have a stochastic behavior and their number strongly depends on the temperature and the mass of measured samples. High temperature spikes corresponding to magnetization discontinuities were observed. All these results allowed to propose that magnetization jumps in nanostructured magnetics with magnetization rotation reversal processes comply with the local heating model. (C) 2014 Published by Elsevier B.V.

Author keywords:

Nd-Fe-B nanostructured alloy; Magnetization jump; Low temperature PERMANENT-MAGNETS; REVERSAL

DOI:

10.1016/j.jmmm.2014.11.002

Web of Science ID:

ISI:000345683200080

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR 1
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-4766
Keywords-Plus	PERMANENT-MAGNETS; REVERSAL
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Condensed Matter
Author-Email	d.s.neznakhin@urfu.ru
ResearcherID-Numbers	Bolyachkin, Anton/E-6362-2017 Markin, Pavel/K-7088-2013
ORCID-Numbers	Bolyachkin, Anton/0000-0003-0420-1806 Markin, Pavel/0000-0002-9537-2303 Neznakhin, Dmitriy/0000-0002-5175-4473
Funding-Acknowledgement	UrFU Young Scientists Competition grant {[}1362, 2582]
Funding-Text	This research has been performed under the aegis of the state order projects 1362 and 2582 with the partial support of UrFU Young Scientists Competition grant. We thank A.V. Korolev, T.P, Rasskazova and I. Miller for special support.
Number-of-Cited-References	13
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	52
Journal-ISO	J. Magn. Magn. Mater.
Doc-Delivery-Number	AU6AA