Limit field of the AF–F transition in FeRh

By the thermodynamic cycles method using the model S– T diagram of the FeRh alloy in the AF–F transition region, it is shown that for inducing the transition adiabatically over the whole alloy volume, it is necessary to apply a magnetic field equal to or larger than a limit magnetic field H ↑ l. The...

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Published inJournal of alloys and compounds Vol. 348; no. 1; pp. 18 - 22
Main Authors Annaorazov, M.P, Ünal, M, Nikitin, S.A, Tyurin, A.L, Asatryan, K.A, Dovletov, A.Kh
Format Journal Article
LanguageEnglish
Published Elsevier B.V 13.01.2003
Subjects
Magnetically ordered material
Magnetocaloric effect
Phase transition
Transition metal compounds
Transition metal compounds
Magnetocaloric effect
Magnetically ordered material
Phase transition
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Summary:By the thermodynamic cycles method using the model S– T diagram of the FeRh alloy in the AF–F transition region, it is shown that for inducing the transition adiabatically over the whole alloy volume, it is necessary to apply a magnetic field equal to or larger than a limit magnetic field H ↑ l. The latter field is well above the field necessary to apply to induce the transition isothermally at the same temperatures. Using magnetocaloric effect measurement data, it is found that the fields, at which the effect approaches saturation indeed greatly exceed the critical fields. The calculated H ↑ l values are close to the experimentally obtained ones.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0925-8388
1873-4669
DOI:10.1016/S0925-8388(02)00829-0