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Sign-reversing Magnetocaloric Effect in R FeAl (R = Dy and Ho) Compounds

Crystallography Reports, ISSN: 1562-689X, Vol: 68, Issue: 3, Page: 441-445
2023
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Abstract: The magnetic properties of rare-earth ferrimagnetic compounds DyFeAl and HoFeAl with a ThZn crystal structure have been studied. The temperature dependences of the magnetization and magnetocaloric effect have been examined in the temperature range of 4.2‒300 K in magnetic fields of up to 70 and 18 kOe, respectively. The temperatures of magnetic compensation of the magnetization of the rare-earth and iron sublattices have been determined. The magnetocaloric effect has been determined by the direct method. It has been found that the sign of the effect changes near the magnetic compensation point. This phenomenon has an application potential.

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