Eur. Phys. J. B 7, 551-562 (1999)
https://doi.org/10.1007/s100510050648

High magnetic field properties and ESR of the Li_1-zNi_1+zO₂compounds

¹ Grenoble High Magnetic Field Laboratory ( Laboratoire conventionné avec l'Institut National Polytechnique, Grenoble, et l'Université Joseph-Fourier, Grenoble 1.) , MPI - FKF and CNRS, B.P. 166, 38042 Grenoble Cedex 09, France
² Laboratoire MATOP, Faculté Saint-Jérôme, C-151,Université Aix-Marseille III, 13397 Marseille Cedex 20, France
³ Institut de Chimie de la Matière Condensée de Bordeaux-ICMCB-CNRS, et École Nationale Supérieure de Chimie et Physique de Bordeaux, avenue Dr. A. Schweitzer, 33608 Pessac Cedex, France

Received: 24 July 1998
Accepted: 23 September 1998
Published online: 15 February 1999

Abstract

Li_1-zNi_1+zO₂ compounds have a layered structure made of alternating Ni-O and Li-O slabs. An amount z of extra divalent Ni ions is always present in the Li-O layers. We show, using high field magnetisation, static and dynamic susceptibility and high frequency ESR, that the magnetic properties are driven by the z parameter. The compounds can be described as ferromagnetic Ni-O layers, bridged by clusters possessing a net ferromagnetic moment.