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Magnetic order of FeCl3 and CoCl2-graphite intercalation compounds by neutron diffraction

1983; Elsevier BV; Volume: 8; Issue: 1-2 Linguagem: Inglês

10.1016/0379-6779(83)90010-3

1879-3290

Ch. Simon, F. Batallán, I. Rośenman, J. W. Schweitzer, Valeria Lauter, R. Vangélisti,

Graphite, nuclear technology, radiation studies

We have investigated the magnetic properties of first and second stage intercalated FeCl3 and CoCl2 graphite by neutron diffraction at low temperatures. Each case is very different: in FeCl3 we have found that in both stages strong 2-D magnetic correlations develop below 30 K. In the first stage compound we observe a transition from the 2-D phase to a 3-D order at 3.8 K. The in-plane order remains the same and corresponds to an incommensurate magnetic modulation of the propagation vector 0.394 a. By contrast, in both stages of the CoCl2 compounds, we observe a 3-D antiferromagnetism along the c-direction without any 2-D behaviour.