Issue 9, 2002

Crystal and magnetic structure of the perovskites La2MTiO6 (M = Co, Ni)

Abstract

The crystal structures of the perovskites La2MTiO6 (M = Co and Ni) were determined on the basis of powder neutron diffraction data collected at room temperature. Refinements of the data showed that these compounds have monoclinic symmetry, space group P21/n, and the common structure is a perovskite-type with a partially ordered arrangement of M(II) and Ti(IV) cations on the 6-coordination sites.

Magnetic structures of type II have been determined from neutron diffraction data collected at 1.5 K and it was found that there was a long range antiferromagnetic ordering where only the M2+ ions are responsible for their magnetic properties. The antiferromagnetic ordering is explained by means of a propagation vector [k = ½, 0, ½] and the respective magnetic moments at 1.5 K are 2.88 μB for Co and 2.05 μB for Ni.

Graphical abstract: Crystal and magnetic structure of the perovskites La2MTiO6 (M = Co, Ni)

Article information

Article type
Paper
Submitted
11 Mar 2002
Accepted
01 May 2002
First published
06 Aug 2002

J. Mater. Chem., 2002,12, 2798-2802

Crystal and magnetic structure of the perovskites La2MTiO6 (M = Co, Ni)

E. Rodríguez, M. L. López, J. Campo, M. L. Veiga and C. Pico, J. Mater. Chem., 2002, 12, 2798 DOI: 10.1039/B202504N

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