Magnetism of GdMn1-xFexO3 (0≤x≤1) Nanoparticles |
| M. Mihalik Jr.a, M. Vavrab, M. Šestákováb, J. Briančinc, M. Mihalika
aInstitute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovak Republic bInstitute of Chemistry, Faculty of Science, P.J. Šafárik University in Košice, 040 01 Košice, Slovak Republic cInstitute of Geotechnics SAS, Watsonova 45,040 01 Košice, Slovak Republic |
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| Magnetic properties of GdMn1-xFexO3 (0≤x≤1) substitutional system are investigated on the nanocrystalline samples prepared by glycine-nitrate method. The polarization of Gd sublattice due to Gd-3d ion exchange interaction was observed for x=0,0.2 and 1 below 10.5(5) K, 9.5(5) K, and 5.6(5) K, respectively. The magnetic ordering temperatures of GdMnO3 and GdFeO3 parent compounds were confirmed to be 44(2) K and 658(5) K. The ordering temperatures of 350(10) K, 570(5) K, 605(5) K, and 622(5) K for x=0.4,0.5,0.6, and 0.8, as well as spin-reorientation temperatures of 409(5) K, 430(5) K, and 336(5) K for x=0.5,0.6, and 0.8 were systematically higher than the data reported on polycrystalline material and single crystals by other experimental groups. These effects can be explained by the grain size effects and/or amount of vacancies in the crystal structure. |
DOI:10.12693/APhysPolA.137.993 topics: perovskites, magnetism, nanoparticles |