Eur. Phys. J. B 35, 317-323 (2003)
https://doi.org/10.1140/epjb/e2003-00283-3

A magnetic study of the one dimensional SrNiIrO compound

¹ Laboratoire CRISMAT, UMR CNRS ISMRA 6508, 6 boulevard du Maréchal Juin 14050 Caen Cedex, France
² Laboratoire National des Champs Magnétiques Pulsés, LNCMP, avenue de Rangueil, 31432 Toulouse, France

Corresponding author: ^a antoine.maignan@ismra.fr

Received: 28 April 2003
Revised: 21 July 2003
Published online: 15 October 2003

Abstract

The magnetic properties of a polycrystalline Sr₃NiIrO₆ 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 Ca₃CoRhO₆ and Ca₃CoIrO₆. In particular, at low temperature ( K)), a frozen state, characterized by a very slow spin dynamic, is evidenced. On the other hand, for (=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 Ir⁴⁺ (S = 1/2) and Ni²⁺ (S = 1). Sr₃NiIrO₆ 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.