Spin Frustration in Some Magnetic Compounds |
| A. Szytułaa, Ł. Gondeka, B. Penca and J. Hernandez-Velascob
aM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland bBENSC, Hahn-Meitner Institute, Glienicker Str. 100, 14-109 Berlin-Wannsee, Germany |
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| In the paper the results of the powder neutron diffraction measurements of RAuIn (R = Ce, Tb, Dy, and Er) and ZnFe2O4 compounds at low temperatures are presented. For the RAuIn compounds, which crystallize in the hexagonal ZrNiAl-type structure, the rare-earth moments lie in the ab-plane and form a typical triangle non-collinear structure. ZnFe2O4 has the normal spinel structure in which the Fe3+ ions occupy the B sites, forming the corner-shared tetrahedra of the Fe spins. At low temperatures experimental data indicate the coexistence of the long-range and the short-range magnetic order. The obtained results suggest that the important factor which influences the magnetic ordering in these compounds is geometrical frustration of magnetic moments. |
| DOI: 10.12693/APhysPolA.106.583 PACS numbers: 75.10.Nr, 75.25.+z, 75.50.Ee |