Exchange stiffness of ferromagnets

Spin-wave and exchange stiffness constants of 22 ferromagnetic compounds have been deduced from their spontaneous magnetization, M s , by using an improved technique. The improvement consists in utilizing the entire M s ( T ) curve, up to the Curie point, rather than just its low-temperature part, w...

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Veröffentlicht in:	European physical journal plus 2020-03, Vol.135 (3), p.301, Article 301
Hauptverfasser:	Kuz’min, M. D., Skokov, K. P., Diop, L. V. B., Radulov, I. A., Gutfleisch, O.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied and Technical Physics Atomic Complex Systems Condensed Matter Condensed Matter Physics Crystal growth Crystals Curie temperature Ferromagnetism Low temperature Materials Science Mathematical and Computational Physics Molecular Neutrons Optical and Plasma Physics Physics Physics and Astronomy Regular Article Single crystals Stiffness Symmetry Temperature Theoretical
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Beschreibung
Zusammenfassung:	Spin-wave and exchange stiffness constants of 22 ferromagnetic compounds have been deduced from their spontaneous magnetization, M s , by using an improved technique. The improvement consists in utilizing the entire M s ( T ) curve, up to the Curie point, rather than just its low-temperature part, with T ≪ T C . For 17 of the 22 ferromagnets, literature data have been used, while 5 compounds have been studied anew, on single crystals grown for the purpose.
ISSN:	2190-5444 2190-5444
DOI:	10.1140/epjp/s13360-020-00294-y