SEM, AFM and TEM images of LNO films sintered by (a,b,e) conventional (LNO-A) and (c,d,f) microwave (LNO-B) heating sources
Role of morphological characteristics on the conductive behavior of LaNiO3 thin films
Abstract: LaNiO3 (LNO) thin films were synthesized via the polymeric precursor method and sintered using conventional and microwave heating sources. The samples were characterized by structural morphological and electrical techniques. The crystalline structure was analyzed by X-ray diffraction and indicated rhombohedral perovskite phase in both films sintered using conventional and microwave heating. The films morphology was evaluated by scanning and transmission electron microscopy, and atomic force microscopy, and the results point out that microwave heating exerts direct influence on the morphological characteristics of LNO films contributing towards the change in the grain size distribution, porosity and roughness. Conductivity was also investigated through four-probe measurements, which pointed out a conductive and ohmic behavior of the LNO thin films prepared via the polymeric precursor method where a direct relationship was found between the morphological characteristics and the electrical properties of LNO film. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
O Laboratório Aberto de Interatividade para Disseminação do Conhecimento Científico e Tecnológico (LAbI), vinculado à Universidade Federal de São Carlos (UFSCar), é voltado à prática da divulgação científica pautada na interatividade; nas relações entre Ciência, Arte e Tecnologia.
Understanding the dynamic magnetization process for the magnetoelectric effect in multiferroic composites Abstract: Based on a magnetic relaxation model, an approach that includes the spin dynamics is proposed and applied to describe the magnetoelectric (ME) effect […]
Structural characterization and photoluminescence behavior of pure and doped potassium strontium niobates ceramics with tetragonal tungsten-bronze structure Abstract: KSr2Nb5O15 and K(1.2)Sr(1.6)Ln(0.2)Nb(5)O(15) (Ln = La, Pr, and Nd) were synthesized by the Pechini method and calcined at […]
On the Model Performance of Composite CO2 Separation Membranes Abstract: A simple model on the performance of composite CO2 separation membranes (ceramic oxide-ion conductor and molten alkaline carbonates) is derived from an equivalent circuit comprising […]