EPJ Web of Conferences 29, 00004 (2012)
https://doi.org/10.1051/epjconf/20122900004

Effect of Fe doping on properties of Pr_0.67Ba_0.33Mn_1-xFe_xO₃ perovskites

¹ Laboratoire de Physico–Chimie des Matériaux, Faculté des Sciences de Monastir, Département de Physique, 5019, Université de Monastir, Monastir, Tunisie
² Laboratoire des Matériaux et du Génie Physique (CNRS UMR 5628), Minatec Bâtiment INPG, parvis Louis Néel, BP 257, 38016 Grenoble Cedex 1, France
³ Institut Néel (CNRS and UJF), BP 166, 38042 Grenoble Cedex 9, France
⁴ Institut Laue Langevin, BP 156, 38042 Grenoble Cedex 9, France

^a e-mail: medbaazaoui@yahoo.fr

Abstract

Changes in the physical properties of ceramic Pr_0.67Ba_0.33Mn_1-xFe_xO₃ (0 ≤ x ≤ 0.15) are interpreted as resulting from the suppression of the ferromagnetic double exchange interaction with almost no lattice effect due to similar ionic radii value of Fe³⁺ and Mn³⁺ Magnetization and transport measurements show at low temperature ferromagnetic and metallic behavior for x=0 and 0.05 samples, whereas x = 0.10 and x = 0.15 compounds show spin glass like and semiconducting behavior. At high temperature semiconductor and paramagnetic behavior are observed for all the samples.