Magnetostructural phase transitions and magnetocaloric effect in Tb-Dy-Ho-Co-Al alloys with a Laves phase structure

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10325211" target="_blank" >RIV/00216208:11320/16:10325211 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/16:00485680
Result on the web
<a href="http://dx.doi.org/10.1063/1.4955047" target="_blank" >http://dx.doi.org/10.1063/1.4955047</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4955047" target="_blank" >10.1063/1.4955047</a>

Result language
angličtina
Original language name
Magnetostructural phase transitions and magnetocaloric effect in Tb-Dy-Ho-Co-Al alloys with a Laves phase structure
Original language description
The influence of simultaneous substitution within the rare earth (R) and Co sublattices on the structural, magnetic, and magnetocaloric properties of the Laves phase RCo2-type compounds is studied. Main attention is devoted to the studies of the magnetostructural phase transitions and the transition types with respect to the alloy composition. Multicomponent alloys Tb-x(Dy0.5Ho0.5)(1-x)Co-2 and Tb-x(Dy0.5Ho0.5)(1-x)Co1.75Al0.25 were prepared with the use of high purity metals. Majority of the Tb-x(Dy0.5Ho0.5)(1-x)Co-2 alloys exhibit magnetic transitions of the first-order type and a large magnetocaloric effect. The substitution of Al for Co in Tb-x(Dy0.5Ho0.5)(1-x)Co-2 increases the Curie temperature (TC) but changes the transition type from first-to the second-order. The discussion of the physical mechanisms behind the observed phenomena is given on the basis of the first principles electronic-structure calculations taking into account both the atomic disorder and the magnetic disorder effects at finite temperatures. The advantage of Al-containing materials is that sufficiently high magnetocaloric effect values are preserved at T> T-C. Published by AIP Publishing.
Czech name
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Czech description
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Project
<a href="/en/project/LM2011025" target="_blank" >LM2011025: MLTL - Magnetism and Low Temperature Laboratories - operation and development of national research infrastructure</a>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP) S - Specificky vyzkum na vysokych skolach I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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