A magnetic study of the one dimensional Sr $\mathsf{_{3}}$ NiIrO $\mathsf{_{6}}$ compound

D. Flahaut, S. Hébert, A. Maignan (), V. Hardy, C. Martin, M. Hervieu, M. Costes, B. Raquet and J. Broto

The European Physical Journal B: Condensed Matter and Complex Systems, 2003, vol. 35, issue 3, 317-323

Abstract: The magnetic properties of a polycrystalline Sr 3 NiIrO 6 sample have been investigated by means of susceptibility and magnetization measurements. On the one hand, it is found that this compound, made of magnetic chains on a triangular lattice, behaves very similarly to Ca 3 CoRhO 6 and Ca 3 CoIrO 6 . In particular, at low temperature ( T > T 2 (=21 K)), a frozen state, characterized by a very slow spin dynamic, is evidenced. On the other hand, for T 2 > T > T 1 (=70 K), this phase exhibits magnetization values, smaller than the expected ones, with a 1/3 plateau reminiscent of the ferrimagnetic state of Ising spins on a triangular lattice. Nonetheless, the absence of saturation in 35 T and the low magnetization values are consistent with an antiferromagnetic intrachain coupling between Ir 4+ (S=1/2) and Ni 2+ (S=1). Sr 3 NiIrO 6 can be viewed as made of antiferromagnetically coupled ferrimagnetic chains on a triangular lattice. On the basis of these results, a magnetic (H, T) phase diagram is proposed. Copyright Springer-Verlag Berlin/Heidelberg 2003

Date: 2003
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DOI: 10.1140/epjb/e2003-00283-3

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