Eur. Phys. J. B 47, 207-211 (2005)
https://doi.org/10.1140/epjb/e2005-00316-y

Temperature dependence of phase separation and magnetic anisotropy by electron spin resonance in Pr_0.6Ca_0.4Mn_0.9Ru_0.1O₃

¹ LEMA, UMR 6157 CNRS-CEA, Faculté des Sciences et Techniques, Université François Rabelais, Parc de Grandmont, 37200 Tours, France
² CRMHT, UPR4212 CNRS, 45071 Orléans Cedex 02, France

Corresponding author: ^a cecile.autret@univ-tours.fr

Received: 4 February 2005
Revised: 13 July 2005
Published online: 11 October 2005

Abstract

Electron spin resonance (ESR) measurements have been performed on polycrystalline samples of Pr_0.6Ca_0.4Mn_1-xRu_xO₃ (x = 0, 0.1). The substitution of Ru in the Mn-site strengthens ferromagnetic interactions due to the double exchange between the Mn³⁺ and Mn⁴⁺ species and super-exchange between the Ru⁵⁺ and Mn³⁺ species. The temperature dependence of the ESR spectra indicates development of magnetic phase separation in Pr_0.6Ca_0.4Mn_0.9Ru_0.1O₃ in contrast with the un-doped sample.