Magnetic ordering of anti-Th3P4-type R4X3 and Th3P4-type R3X4 compounds (R = Ce, Pr, Nd, Sm, X = Ge, Sb, Te)статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The Th3P4-type Ce3Te4 and Nd3Te4 compounds (space group I43d, N 220) have been investigated by means of magnetization and neutron powder diffraction. The magnetization measurements indicate that Ce3Te4 and Nd3Te4 order ferromagnetically at 5 K and 38 K. Neutron diffraction experiments in zero fields show that below their magnetic transition temperatures the Ce3Te4 and Nd3Te4 compounds exhibit a collinear ferromagnetic type ordering with the C3v magnetic point group (wave vector K0 = [0, 0, 0]).
Magnetic moment values of 0.66(6) mB/Ce and 2.4 mB/Nd are obtained from the analysis of neutron diffraction data at 1.5 K for Ce3Te4 and Nd3Te4. The earlier reported magnetic structures of the anti-Th3P4-type Ce4Ge3, Ce4Sb3, Pr4Sb3 and Nd4Sb3 compounds were re-refined and re-assigned in terms of magnetic point groups.