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Low-temperature magnetic and magnetocaloric properties of orthorhombic DyNiSn

Physica B: Condensed Matter, ISSN: 0921-4526, Vol: 669, Page: 415300
2023
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In this work, magnetic and magnetocaloric properties of antiferromagnetic (AFM) DyNiSn compounds which shows complex magnetic behavior at low-temperatures are investigated. Performed magnetic and specific heat measurements showed that except transition to the antiferromagnetic state at T N  = 7.7(1) K, there are two more changes in the magnetic structure at T 1  = 5.6(1) K = and T 2  = 2.6(1) K. The magnetocaloric properties of the DyNiSn were determined indirectly from magnetic and specific heat measurements. DyNiSn shows normal and inverse magnetocaloric effect peaks at ∼9 K and ∼5 K, respectively. The maximum values of the magnetic entropy change (Δ S m ), relative cooling power (RCP), and temperature averaged entropy change (TEC(5)) evaluated from magnetic measurements and for magnetic field change of 5 T are −8.0(1) Jkg − 1 K − 1, 130(9) Jkg − 1, and 8.7(1) Jkg − 1 K − 1, respectively.

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