Journal of Applied Physics · 2007 · 55 citations · 9 references
Natural SciencesMaterials EngineeringMaterials ScienceMagnetic MaterialsNanomaterialsNanotechnologyFerromagnetic MaterialsFerromagnetismInorganic NanoparticlesMagnetic NanomaterialsMagnetic OxidesNanoparticle SynthesisCharge TransportCharge Transport MechanismsGrain Size ReductionMagnetic NanoparticlesMagnetic Oxide NanoparticlesManganitesNanomagnetismPolyol Synthesis
In this paper we report the structural, magnetic, and transport properties of nanoparticles of Pr0.5Ca0.5MnO3(PCMO). On comparing our results with that of bulk PCMO, we find that there is a likely destabilization of charge ordering in nanoparticles of PCMO. The investigation has been done with particle sizes as small as 15nm synthesized by polyol route. The size reduction (by keeping the chemical composition unchanged) reduces the orthorhombic c axis preferentially and thus reduces the orthorhombic distortion. The size reduction to 15nm enhances the ferromagnetic moment at low temperatures and strongly suppresses the activated charge transport which is seen in the bulk samples of charge ordered PCMO.
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X-ray line broadening from filed aluminium and wolfram
G.K. Williamson, W H Hall · Acta Metallurgica · 1953 · 10.2K citations
C. N. R. Rao, A. Arulraj, Panjikar Santosh et al. · Chemistry of Materials · 1998 · 160 citations