Eur. Phys. J. B 14, 655-659 (2000)
https://doi.org/10.1007/s100510051075

Magnetic properties of the S = 1/2 one-dimensional antiferromagnet MgVO₃

¹ Laboratoire MATOP, Université d'Aix-Marseille III and CNRS, Faculté des Sciences de Saint-Jérôme, C-151, 13397 Marseille Cedex 20, France
² Grenoble High Magnetic Field Laboratory, MPIFKF and CNRS, 38042 Grenoble Cedex 9, France
³ CEA Grenoble, Département de Recherche Fondamentale sur la Matière Condensée, 38054 Grenoble Cedex 9, France
⁴ Laboratoire de Physique Quantique, Université Paul Sabatier and CNRS, 118 route de Narbonne, 31062 Toulouse, France
⁵ Centre d'Élaboration de Matériaux et d'Études Structurales, CNRS, BP 4347, 29 rue J. Marvig, 31055 Toulouse Cedex 4, France
⁶ Laboratoire de Physique de la Matière Condensée, ENS, 24 rue Lhomond, 75231 Paris Cedex 5, France
⁷ Laboratoire d'Études des Propriétés Électroniques des Solides, CNRS, 38042 Grenoble Cedex 9, France

Received: 14 July 1999
Published online: 15 April 2000

Abstract

The magnetic susceptibility and the electron spin resonance in the X-band of the transition metal oxide compound MgVO₃ are reported. We show that this compound, made of weakly coupled infinite chains of VO₅ pyramids, behaves as a S=1/2 one-dimensional Heisenberg antiferromagnet. From the ESR and magnetic experiments we deduce the Néel temperature Tn=5.2±0.5 K, the in-chain coupling constant J/K = 100 ± 5 K and the g-factor values g_x=g_z=1.972(2), g_y=1.949(1) for V⁴⁺ ions in MgVO₃.