2 documents found, page 1 of 1
Thermal stability and decomposition kinetics of NdNiO3− δ at 1 bar of O2
Bassou, A. A.; Machado, P. J.; Gomes, M. M.; Manjunath, B.; Vilarinho, R.; Silva, Bruna Andreia Nogueira Airosa; Oliveira, José A.; Almeida, B. G.Despite the interest in rare-earth nickelates for applications, their processing under 1 bar of oxygen pressure is still challenging. In this work, we report the co-precipitation synthesis, thermal stability and thermally driven decomposition of NdNiO3 phase, in order to determine the synthesis parameters towards a pure perovskite phase. We concluded that using a 1% molar excess of Nd during preparation and pos...
Enhancement of resistivity and magnetization of Bi1-xLaxFe1-yMnyO3 ceramics by ...
Carvalho, T.T.; Manjunath, B.; Pérez de la Cruz, J.; Amaral, V.S.; Fernandes, J.R.A.; Almeida, A.; Moreira, J. Agostinho; Vilarinho, R.; Tavares, P.B.This work aims at studying the effect of La and Mn substituents on the structural, electrical and magnetic properties of Bi1-xLaxFe1-yMnyO3 (0≤x≤0.30; 0≤y≤0.20) at room temperature, in order to find out the optimal compositions that provide both high resistivity and remnant magnetization. The analysis of the XRD patterns and Raman spectra suggest a progressive transition from a rhombohedral for x<0.15 with y = ...