Magnetic Properties of the Nanocrystalline DyMnO3 Compound

V. Dyakonova, b, A. Szytułac, S. Baranc, Z. Kravchenkob, E. Zubovb,, O. Iessenchuka, W. Bazelad, M. Duld, A. Zarzyckic and H. Szymczaka a Institute of Physics, PAS, al. Lotników 32/46, 02-668 Warsaw, Poland b A.A. Galkin Donetsk Physico Technical Institute, NANU, R. Luxembourg St. 72, 83114 Donetsk, Ukraine c M. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059, Kraków, Poland d Institute of Physics, Technical University, Podchorążych 1, 30-084 Kraków, Poland

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We report on the X-ray powder diffraction and magnetic measurements of the polycrystalline and the two nanocrystalline samples of DyMnO3 compound synthesized at temperatures of 800 and 850°C. All samples at room temperature crystallize in the orthorhombic crystal structure (space group Pnma). The crystal structure parameters determined change only slightly with preparation methods but the average grains size of the nanoparticles determined from X-ray data increases significantly with increasing annealing temperature. Temperature dependence of the magnetic susceptibility indicates the antiferromagnetic order in Dy sublattice at low temperatures.

DOI: 10.12693/APhysPolA.117.607 PACS numbers: 61.05.cp, 75.47.Lx, 75.50.Ee, 75.75.-c