SIMULATION OF MAGNETIZATION REVERSAL AND HYSTERETIC LOOPS OF (ND,PR)2FE14B MAGNETS AT LOW TEMPERATURES

1 MENUSHENKOV Vladimir P.
Co-authors:
1 SAVCHENKO Alexander G. 1 STOLYAROV Vasily L. 1 ZHELEZNYI Mikhail V. 2 B. KOLCHUGINA Natalia 2 DORMIDONTOV Nikolay A. 3 SKOTNITCOVÁ Kateřina 4 KOSHKID’KO Yurij S. 4 ĆWIK Jacek
Institutions:
1 National Research Technological University “MISiS”, 119049, Leninskij prospect 4, Moscow, Russia. menushenkov@gmail.com
2 Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119991, Leninskii prospect, 49, Moscow, Russia, nkolchugina@imet.ac.ru
3 Vysoka Skola Banska-Technical University, Ostrava, Czech Republic, EU katerina.skotnicova@vsb.cz
4 Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland, EU yurec@mail.ru
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
1621-1627
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
29 views / 13 downloads
Abstract

In the present work, the computer simulation of hysteresis loops of (Nd1-xPrx)2Fe14B compounds with different Pr contents was performed for a temperature range of 300-5 K. The simulation results suggest that the alloying of Nd2Fe14B with Pr (1) leads to reducing the negative effect of the spin-reorientation phase transition on the residual magnetization of the compound (Nd1-xPrx)2Fe14B, (2) reduces the slope of the demagnetization curve making the hysteresis loop more rectangular, (3) does not have a noticeable effect on the maximum value of the coercive force, shifting its maximum to lower temperatures as the Pr content increases. Thus, the alloying of Nd2Fe14B-based compositions with Pr can increase the temperature stability of the hysteresis characteristics of permanent magnets and ensures their operation at low temperatures without loss of magnetic properties.

Keywords: Nd-Pr-Fe-B magnets, coercive force, magnetic properties, simulation of hysteretic loops
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