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您的检索式：作者名="Manjunath B.Bellakki"
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| 1 | Synthesis and measurement of structural and magnetic properties of K-doped LaCoO_3 perovskite materials显示文摘Polycrystalline La1-xKxCoO3(0 ≤ x ≤ 0.2) rare earth cobaltates have been synthesized by a solution combustion method using glycine as a fuel.The synthesized ceramic materials were characterized by powder X-ray diffraction(XRD),scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR),and magnetic measurements and studied for physical properties,such as photocatalytic activity.FTIR measurements in conjunction with XRD showed that phases beyond 10% K doping are accompanied by small amounts of impurities.Chemical titrations show the presence of Co4+ and account for the Co3+-Co4+ mixed-valency of the system.The parent LaCoO3 shows spin-glass transition at low temperatures,whereas doped samples show transition from spin-glass behavior to paramagnetic ordering on progressive doping of K. 'Mixed-conductor' nature of these ceramics positions them as viable candidates for solid oxide fuel cell(SOFC) applications. | Manjunath B.Bellakki C.Madhu Tobias Greindl Sandeep Kohli Patrick McCurdy V.Manivannan | 2010 | Rare Metals2010，29，5： | 3 |
| 2 | Synthesis,and measurement of structural and magnetic properties,of La_(1-x)Na_xFeO_3 (0.0≤x≤0.3) perovskite oxides显示文摘Polycrystalline La1-xNaxFeO3 (0.0≤x≤0.3) solid solutions were synthesized by a solution combustion method using glycine as a fuel. The combustion synthesized compounds were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), diffused reflectance (DR) in the UV-vis, and magnetic measurements. The crystal structure examined by X-ray powder diffraction indicated that the samples were single phase and crystallized in an orthorhombic (space group, Pbnm no.62) structure. The parent and so-dium-substituted compounds showed canted anti-ferromagnetic behavior associated with an increase in magnetic moment as Na content increased. The changes in magnetic properties of the materials were correlated to the changes in structural features, as shown by Rietveld structural refinement of the materials. | Manjunath B.Bellakki Venkatesan Manivannan Patrick McCurdy Sandeep Kohli | 2009 | Journal of Rare Earths2009，27，5： | 1 |
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