Studying features of the structural state of high-coercivity (Nd, Pr, Dy, Tb)-Fe-B magnetic materials via Mössbauer spectroscopy

Mössbauer spectroscopy is used to study the structure of sintered (Nd, Pr, Dy, Tb)-Fe-B magnets and the initial alloy obtained via strip-casting and used in the magnets’ preparation. Terbium is made a part of the composition by adding TbH 2 hydride, considerably improving the hysteretic characterist...

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Published inBulletin of the Russian Academy of Sciences. Physics Vol. 79; no. 8; pp. 1022 - 1025
Main Authors Burkhanov, G. S., Kol’chugina, N. B., Lukin, A. A., Godovikov, S. K., Koshkid’ko, Yu. S., Skotnicova, K.
Format Journal Article
LanguageEnglish
Published New York Allerton Press 01.08.2015
Springer Nature B.V
Subjects
Casting alloys
Coercivity
Crystal lattices
Hadrons
Heat treatment
Heavy Ions
Iron
Magnetic materials
Magnets
Neodymium
Nonuniformity
Nuclear Physics
Physics
Physics and Astronomy
Proceedings of the 13th International Conference “Mössbauer Spectroscopy and its Applications”
Sintering
Spectroscopic analysis
Spectrum analysis
Strip casting
Terbium
Terbium
Coercive Force
Strip Casting
Initial Alloy
Hyperfine Field
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Summary:Mössbauer spectroscopy is used to study the structure of sintered (Nd, Pr, Dy, Tb)-Fe-B magnets and the initial alloy obtained via strip-casting and used in the magnets’ preparation. Terbium is made a part of the composition by adding TbH 2 hydride, considerably improving the hysteretic characteristics of the magnets. Along with an increase in the local nonuniformity of the iron atoms’ environment, the study reveals the substantial normalization of the population of iron atoms in the Nd 2 Fe 14 B crystal lattice as a result of heat treatment and the incorporation of Tb atoms into the crystal lattice.
ISSN:1062-8738
1934-9432
DOI:10.3103/S1062873815080031