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Magnetic properties of the nanocrystalline DyMnO3 |
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| Authors: | Stanis?aw Baran Vladimir Dyakonov Andreas Hoser Arkadiusz Zarzycki Andrzej Szytu?a |
| Institution: | 1. Department of Solid State Physics, M. Smoluchowski Institute of Physics, Jagiellonian University, Kraków, Poland;2. Division of Physics of Magnetism, Institute of Physics, PAS, Warsaw, Poland;3. Department of Structure and Dynamics of Energy Materials, Helmholtz-Zentrum Berlin für Materialen and Energies GmbH, Berlin, Germany;4. Department of Materials Science, H. Niewodniczański Institute of Nuclear Physics, PAS, Kraków, Poland |
| Abstract: | We report on the X-ray and neutron diffraction and magnetic measurements of the nanosamples of DyMnO3 annealed at temperatures of 800 °C, 850 °C and 900 °C. The diffraction data indicate that all the samples crystallize in an orthorhombic crystal structure (space group Pnma). The crystal structure parameters change slightly with preparation. All the samples are antiferromagnets at low temperatures. The Mn magnetic moments order near 40 K, while those of Dy below 8.4 K. The macroscopic magnetic and neutron diffraction data indicate a small difference of properties between the DyMnO3 samples synthesized at different temperatures. The observed broadening of magnetic peaks connected with the Dy sublattice suggests a cluster-like character of magnetic ordering. |
| Keywords: | X-ray diffraction neutron diffraction magnetic measurements manganites nanocrystalline |