Ferroelectricity in the 1 μC cm−2 range induced by canted antiferromagnetism in (LaMn3)Mn4O12 Abstract: Pyroelectric current and field-dependent specific heat measurements on polycrystalline samples of the quadruple perovskite (LaMn3)Mn4O12 give evidence of ferroelectricity driven by the canted antiferromagnetic […]
Controlling the Electronic, Structural, and Optical Properties of Novel MgTiO3/LaNiO3 Nanostructured Films for Enhanced Optoelectronic Devices Abstract: This study systematically investigated the electronic, structural, and optical properties of MgTiO3 (MTO), LaNiO3 (LNO), and MgTiO3/LaNiO3 (MTO/LNO) nanostructured […]
Sintering evaluation of doped lanthanum gallate based on thermodilatometry Abstract: The sintering behavior of La0.9Sr0.1Ga0.8Mg0.2O3-delta oxide-ion conductor was systematically investigated by thermodilatometry. The shrinkage data obtained with heating rates of 4, 7, 10 and 12 degrees […]
Photoluminescence emission in zirconium-doped calcium copper titanate powders Abstract: Intense photoluminescence (PL) emission was observed in Zr-doped calcium copper titanate powders. The compounds were synthesized by a soft chemical method and heat treated at temperatures between […]
Phase composition, densification and electrical conductivity of La0.9Sr0.1Ga0.8Mg0.2O3-delta consolidated by the two-stage sintering method Abstract: The influence of the method of sintering on densification, phase assemblage and electrical conductivity of Sr- and Mg-doped lanthanum gallate was […]
Influence of small amounts of gallium oxide addition on ionic conductivity of La0.9Sr0.1Ga0.8Mg0.2O3-delta solid electrolyte Abstract: The effects of small amounts of gallium oxide on intragrain and intergrain conductivity of La0.9Sr0.1Ga0.8Mg0.2O3.delta are investigated by impedance spectroscopy […]
Spectroscopy and electronic structure of Sr2YRuO6 and Sr2YRu0.75Ir0.25O6 Abstract: We study the electronic structure of the Sr2YRuO6 and Sr2YRu0.75Ir0.25O6 compounds using x-ray (resonant) photoemission and absorption spectroscopies. The experimental results are interpreted with first-principles calculations, which […]
Influence of small amounts of gallium oxide addition on ionic conductivity of La0.9Sr0.1Ga0.8Mg0.2O3-δ solid electrolyte Abstract: The effects of small amounts of gallium oxide on intragrain and intergrain conductivity of La0.9Sr0.1Ga0.8Mg0.2O3-δ are investigated by impedance spectroscopy in the […]
Writers: S.L. Reis and E.N.S. Muccillo Keywords: A: Sintering; C: Electrical conductivity; D: Perovskites; E: Fuel cells Abstract: La0.9Sr0.1Ga0.8Mg0.2O3−δ solid electrolytes were consolidated by fast firing aiming to investigate the effects of the sintering method on densification, microstructure […]
Writers: Rafael A. Ferreira, Maria E. dos Santos, Cássio Morilla-Santos, Ronan Lebullenger, Octavio Peña, Paulo N. Lisboa-Filho Keywords: : Powders: chemical preparation; X-ray methods; Magnetic properties; Perovskites Abstract: Polycrystalline oxide materials with nominal compositions BiMn2O5 and Bi0.9Eu0.1Mn2O5were obtained […]
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