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Low-Temperature Magnetic Hysteresis in Nd(Pr)-Fe-B Nanostructured Alloys with Nd2Fe14B Type Main Phase Composition

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Abstract:

Magnetic hysteresis properties of nanostructured industrially manufactured Nd-Fe-B and Pr-Fe-B alloys on the base of a tetragonal Nd2Fe14B (2-14-1) hard magnetic phase (MQP-B, MQP-B+ and MQP-16-7 brands) have been investigated at 4.2 K in magnetic fields up to 58 T. The chemical composition of the alloys given in the certificates was defined more precisely. The grain sizes of the main 2-14-1 phase were determined. The average grain size is much smaller than a critical single domain diameter. Coercivity, remanence magnetization, saturation magnetization and maximal magnetic energy product were determined at 4.2 K and compared with those obtained at room temperature.

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Periodical:

Defect and Diffusion Forum (Volume 386)

Pages:

125-130

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.386.125

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Online since:

September 2018

Authors:

Dmitriy Sergeevich Neznakhin, Galina Aleksandrovna Politova*, Lev Aleksandrovich Ivanov, Aleksey Sergeevich Volegov, Denis Ivanovich Gorbunov, Irina Tereshina, Nikolay Vladimirovich Kudrevatykh

Keywords:

Low-Temperature Magnetic Properties, Magnetic Hysteresis, Nanostructured Hard Magnetic Alloys, Remanence Enhancement

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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