Article ID Journal Published Year Pages File Type
1593575 Solid State Communications 2012 5 Pages PDF
Abstract

Polycrystalline samples of Ba-doped Bi0.5Sr0.5MnO3 have been prepared by a standard solid-state reaction. The influence of the Ba doping effect on the structural, macro-magnetic, and micro-magnetic properties of the compounds has been investigated experimentally. All the samples crystallize in an orthorhombic structure and the lattice parameters increase continuously with increasing Ba doping level. Due to the increase of the egeg electron bandwidth resulting from the Ba doping, the charge-ordering (CO) transition temperature TCO decreases noticeably. Both the macro-magnetic and the micro-magnetic data show that, in all the samples, only a paramagnetic (PM)/charge-disordered state exists above the CO transition, and only a charge-ordered state coexists with the PM matrix below the CO transition, while an antiferromagnetic (AFM) state coexists with a ferromagnetic (FM) state and a paramagnetic (PM) state at temperatures below the Néel temperature (TN).

► Polycrystalline Ba-doped Bi0.5Sr0.5MnO3 samples have been prepared by a standard solid-state reaction. ► The Ba doping effect on the structural, macro-magnetic, and micro-magnetic properties of the compounds has been investigated. ► Due to the increase of the egeg electron bandwidth, TCO decreases noticeably. ► Multiple phases coexist in the compounds.

Related Topics
Physical Sciences and Engineering Materials Science Materials Science (General)
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