Title: Electrical Transport and Magnetic Properties of Single Crystals of the Colossal Magnetoresistance (CMR) Manganite System RE0.67Sr0.01Pb0.32MnO3, RE = (Nd, Pr, La)
Abstract: Large single crystals of the lead-doped colossal magnetoresistance (CMR) manganite compound RE0.67Sr0.01Pb0.32MnO3 RE = (Nd, Pr, La), have been grown using a flux solution of PbF2 and PbO. The perovskite cubic structure has been identified by X-ray diffraction (XRD). Resistance measurements have been performed in magnetic fields of 0, 2 and 7 T. All crystals exhibit a sharp transition from a paramagnetic and insulating to a ferromagnetic and metallic behavior. The Curie temperature of our lead-doped crystals is significantly higher than that of either the Sr- or Ca-doped systems. The magnetotransport properties, however, are very similar, exhibiting CMR effects. Preliminary results of ellipsometric measurements of the far-infrared conductivity are reported for the La and Nd compounds.
Publication Year: 1999
Publication Date: 1999-09-01
Language: en
Type: article
Indexed In: ['crossref']
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