ACTA

Magnetic Properties of NdFe_0.9Mn_0.1O₃

M. Zentková^a, J. Lazúrová^a, J. Kováč^a, M. Mihalik^a, M. Mihalik jr.^a, J. Briančin^b, M. Fitta^c, V. Kusigerski^d
^aInstitute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia
^bInstitute of Geotechnics SAS, Watsonova 45, 040 01 Košice, Slovakia
^cInstitute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, Kraków, Poland
^dThe Vinca Institute, University of Belgrade, PO BOX 522, 11001 Belgrade, Serbia

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In our paper we study effect of Mn for Fe substitution on magnetic properties of NdFe_x-1Mn_xO₃ compounds for x=0 and 0.1, which have been grown by the OFZ technique. The Néel temperature decreases from T_N1=691 K to T_N1=621 K, and the anomaly in AC susceptibility, related to spin reorientation, vanishes with Mn substitution. Low temperature heat capacity measurement for sample with x=0.1 revealed that substitution of Mn for Fe shifts a Schottky-type anomaly at T_sh to higher temperatures. Another anomaly is generated by doping at T_max=11 K. The anomaly is smeared out by magnetic field, confirming its magnetic origin.

DOI: 10.12693/APhysPolA.126.306
PACS numbers: 75.50.-y, 75.47.Lx, 75.30.-m, 75.30Kz, 75.30.Et, 75.30.Cr