Počet záznamů: 1
Low-temperature magnetothermodynamics performance of Tb.sub.1-x./sub.Er.sub.x./sub.Ni.sub.2./sub. laves-phases compounds for designing composite refrigerants
- 1.0566432 - FZÚ 2023 RIV CH eng J - Článek v odborném periodiku
Ćwik, J. - Koshkid'ko, Y. - Nenkov, K. - Tereshina-Chitrova, Evgenia - Weise, B. - Kowalska, K.
Low-temperature magnetothermodynamics performance of Tb1-xErxNi2 laves-phases compounds for designing composite refrigerants.
Crystals. Roč. 12, č. 7 (2022), č. článku 931. ISSN 2073-4352. E-ISSN 2073-4352
Institucionální podpora: RVO:68378271
Klíčová slova: intermetallic compounds * laves phase * magnetic entropy change * magnetic materials * magnetocaloric effect * phase transition
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.7, rok: 2022
Způsob publikování: Open access
Heat capacity measurements are performed on the polycrystalline Tb1-xErxNi2 intermetallic compounds with x = 0.25, 0.5 and 0.75. The Debye temperatures and lattice contributions as well as the magnetic part of the heat capacity were determined and analyzed. We find that the substitution of Tb atoms for Er atoms leads to a linear reduction of the Curie temperatures from 28.3 K in Tb0.25Er0.75Ni2 to 12.9 K in Tb0.75Er0.25Ni2. We calculate with good approximation the isothermal magnetic entropy ∆Smag and adiabatic temperature changes ∆Tad for Tb1-xErxNi2, for the magnetic field value equal to 1 T and 2 T. The optimal molar ratios of individual Tb0.75Er0.25Ni2, Tb0.5Er0.5Ni2 and Tb0.25Er0.75Ni2 components in the final composite were theoretically determined. According to the obtained results, the investigated composites make promising candidates that can find their application as an active body in a magnetic refrigerator performing an Ericsson cycle at low temperatures.
Trvalý link: https://hdl.handle.net/11104/0337756
Název souboru Staženo Velikost Komentář Verze Přístup 0566432.pdf 1 3.9 MB CC Licence Vydavatelský postprint povolen
Počet záznamů: 1