We report the effect of Fe doping at the Mn site in La 0.7 Sr 0.3 MnO 3 oxides. We find that
the doping of Fe does not cause any structural change, but the electrical transport in the …

Abstract We substitute Ga for Mn in the La 2/3 Sr 1/3 MnO 3 compound to see how magnetic
and atomic disorder affects the properties of this system. Ga doping gives rise to minor …

The temperature dependence of the resistivity of La 1− x Sr x MnO 3 indicates that the
samples are semiconducting for x= 0.0 and 0.1, but metallic for x⩾ 0.2 at lower temperatures …

The effect of 5% Fe doping at Mn site, on the valence band structure of La 0.7 Sr 0.3 MnO 3
has been investigated. Polycrystalline samples of La 0.7 Sr 0.3 MnO 3 and La 0.7 Sr 0.3 Mn …

Ti-substituted perovskites La 0.7 Sr 0.3 Mn 1− x Ti x O 3 with 0⩽ x⩽ 0.20, were investigated
by neutron diffraction, magnetization, electric resistivity, and magnetoresistance (MR) …

A semiconductor-metal transition occurring just below the Curie temperature TC was
observed in single crystals of perovskite La 1-x Sr x MnO 3 for x> or= 0.175. For x< or= 0.15 …

The effect of low Fe substitution in Mn sites of La 0.8 Sr 0.2 MnO 3 is presented. We report
the electrical and magnetic properties of these materials in the Fe concentration range x= 0 …

The effect of Fe doping (<~ 1 0%) on polycrystalline samples of La 0.7 Sr 0.3 MnO 3 has
been studied by means of x-ray diffraction, resistivity, ac susceptibility, magnetization, and …

We study a simplified model of the electronic structure of compounds of the type of La1−
xSrxMnO3. The model represents each Mn4+ ion by a spin S= 1 2, on which an electron can …

The crystal structure (rhombohedral) is not changed on the replacement of Mn by Co. The
lattice parameters a and c decrease with the increasing Co concentration. In this paper we …