Enhanced magnetocaloric effect in distilled terbium and emergence of novel properties after severe plastic deformation

We report the magneto-structural and magnetocaloric properties study of Tb purified by distillation and further processed by severe plastic deformation (SPD). Both parent and the SPD-processed Tb contain nanosized structural elements and have a very pronounced (00l) texture. We observe an improved m...

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Bibliographic Details
Published in:	Scripta materialia Vol. 187; pp. 340 - 344
Main Authors:	Tereshina-Chitrova, E.A., Korneeva, Yu.V., Ozherelkov, D.Yu, Doležal, P., Tereshina, I.S., Kaminskaya, T.P., Gorbunov, D.I., Dobatkin, S.V., Minárik, P.
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01-10-2020
Subjects:	High purity Magnetocaloric effect Phase transitions Rare earths Severe plastic deformation Severe plastic deformation Magnetocaloric effect Rare earths Phase transitions High purity
Online Access:	Get full text
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Summary:	We report the magneto-structural and magnetocaloric properties study of Tb purified by distillation and further processed by severe plastic deformation (SPD). Both parent and the SPD-processed Tb contain nanosized structural elements and have a very pronounced (00l) texture. We observe an improved magnetocaloric effect (MCE) in the distilled nanocrystalline Tb while novel properties emerge in the sample after severe plastic deformation. The latter demonstrates zero thermal expansion over a wide temperature range while its MCE vanishes. We show that the absolutely new physical properties in Tb result from the structural transformation and modification of magnetic interactions. [Display omitted]
ISSN:	1359-6462 1872-8456
DOI:	10.1016/j.scriptamat.2020.06.046