ACTA

Large Magnetocaloric Effect in Nd₂Ni₂In

S. Maskova^a, S. Danis^a, A. Llobet^b, H. Nakotte^c, L. Havela^a
^aDepartment of Condensed Matter Physics, Charles University, Ke Karlovu 5, 12116 Prague 2, The Czech Republic
^bLANSCE, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
^cNew Mexico State University, 88003-8001 Las Cruces, USA-NM

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Nd₂Ni₂In is an antiferromagnet (T_N=8 K) with crystal structure equivalent to the Shastry-Sutherland lattice, possibly leading to the magnetic frustration. The AF coupling with moments in the basal plane can be driven by weak magnetic fields (<0.2 T) into the c-axis ferromagnet. The situation leads to large changes of magnetic entropy in fields below 1 T, which makes Nd₂Ni₂In a candidate for magnetocaloric applications. The entropy change is 9.6 J/(kg K) in fields of 1 T.

DOI: 10.12693/APhysPolA.126.282
PACS numbers: 75.50.Ee, 75.30.Kz, 75.30.Sg