Repartition cationique et structure magnetique de Cs2MnNiF6 |
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| Authors: | Jean-Michel Dance Jean Grannec Alain Tressaud Michel Perrin |
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| Affiliation: | Laboratoire de Chimie du Solide du C.N.R.S. Université de Bordeaux I 351 cours de la Libération, 33405 Talence, Cedex, France;Service de Physique du Solide et de Résonance Magnétique C.E.A., Orme des Merisiers, B.P. n° 2, 91190 Gif-sur-Yvette. France |
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| Abstract: | A neutron diffraction study of Cs2MnNiF6 shows that the cationic distribution differs from that of the apparently isostructural 12R - Cs2NaCrF6 (R3̄m). Below the ordering point the magnetic cell is identical with the crystallographic one and the moments are perpendicular to the c axis. Ferromagnetic couplings inside MnNi2F12 units (three face-shared octahedra) and antiferromagnetic interactions between these units and corner-shared MnF6 octahedra are observed. |
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