Intergrain exchange interaction estimation from the remanence magnetization analysis / Bolyachkin Anton S.,Volegov Aleksey S.,Kudrevatykh Nikolay V. // JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS. - 2015. - V. 378, l. . - P. 362-366.

ISSN/EISSN:

0304-8853 / 1873-4766

Type:

Article

Abstract:

Analysis of delta m(H) = {[}M-d(H) - M-r(infinity) + 2M(r)(H)]/M-r(infinity) curves constructed from dc demagnetization and isothermal remanent magnetization (M-d(H) and M-r(H) respectively) is important for characterization of the interactions in ferromagnets. Up to nosy, it has been mainly used for qualitative deductions about them. In this work, the novel functional relation between the maximum of the delta m(H) plot and the microscopic parameters of the weakly coupled Stoner-Wohlfarth ensemble with the isotropic distribution of easy magnetization axes was established using computer modeling. It allows quantitative analysis in the frame of the model to be performed. Finally, a new method of estimating the intergrain exchange interaction constant for nanostructured high anisotropy magnets could be formulated taking into account the results of the modeling. (C) 2014 Elsevier B.V. All rights reserved.

Author keywords:

Remanence analysis; Henkel plots; Intergrain exchange interaction; Weak-coupling FERROMAGNETIC PARTICLES; NANOCOMPOSITE MAGNETS; PLOTS; MICROSTRUCTURES; ANISOTROPY; CURVES; FILMS

DOI:

10.1016/j.jmmm.2014.11.064

Web of Science ID:

ISI:000346856100054

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR 15
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1873-4766
Keywords-Plus	FERROMAGNETIC PARTICLES; NANOCOMPOSITE MAGNETS; PLOTS; MICROSTRUCTURES; ANISOTROPY; CURVES; FILMS
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Condensed Matter
Author-Email	anton.bolyachkin@urfu.ru
ResearcherID-Numbers	Bolyachkin, Anton/E-6362-2017
ORCID-Numbers	Bolyachkin, Anton/0000-0003-0420-1806
Funding-Acknowledgement	aegis of UrFU Young Scientists Competition grant {[}14/82]
Funding-Text	This research has been performed under the aegis of UrFU Young Scientists Competition grant 14/82 with partial support from State Order 1362.
Number-of-Cited-References	21
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	26
Journal-ISO	J. Magn. Magn. Mater.
Doc-Delivery-Number	AX3RH