Investigation of the structure and the magnetic behavior of nanostructure Ca1−Gd MnO3 (x=0.05; 0.1; 0.15; 0.2) obtained by modified glycine nitrate procedure

Effects of sintering on the structural, microstructural and magnetic properties of nanoparticle manganite Ca1−Gd MnO3 (x=0.05, 0.1, 0.15, 0.2)

“…The compositions of reacting mixtures were calculated according to the principle of propellant chemistry [10]. Detailed description of the synthesis route can be found in our previously published articles [8,9]. In the same papers were given values of calcination temperatures (which are composition dependant) for the formation of crystalline nanoparticle samples.…”

“…We have recently demonstrated [8,9] that nanoparticle Ca 1-x Gd x MnO 3 (x = 0.05, 0.1, 0.15, 0.2) can be efficiently synthesized by a modified glycine-nitrate procedure in two straightforward steps: in the first step, by combustion reaction amorphous powders were obtained which in the second step crystallized in the single-phase perovskite nanoparticles after only 10 min of calcinations at temperatures in the 850-950 o C range, depending on the concentration x. In this paper we present a continuation of that research with the focus on the systematic investigation of structural and microstructural changes of the starting nanopowders induced by their calcinations and sintering.…”

Role of B-site cation on the structure, magnetic and dielectric properties of nanosized La0.7Sr0.3Fe1−xMxO3 (M = Mn; Co and x = 0, 0.5) perovskites

“…This modern industry includes computer memories as magnetic and ferroelectric random-access memories (RAMs of computers), multilayer ceramic capacitors (MLCC), pyroelectric detectors, and high temperature piezoelectric beside its use as hydrogen storage materials. The challenge of compromisation between two sides, the first side is size control while the other includes phase purity, size distribution, morphology, crystallinity and shape tailoring [1][2][3]. To solve this problem, sol-gel combustion particular synthesized routes are utilized.…”

“…Magnetically, perovskite at nanoscale has qualitatively new different properties compared with their bulk counterparts. These novel properties include changes in the magnetic transition temperature, the emergence of superparamagnetism, size dependence of the saturation magnetization, coercivity, surface spin glass, large coercivity, low saturation magnetization and low -field magnetoresistance effect [1,4].…”

Effect of Sintering on Structural and Transport Properties on Nanosized Pr_0.85Na_0.15MnO₃

“…The research in the perovskite manganites has attached much attention because of their rich physical properties and potential application such as magnetic sensor, memory cells [1]. It is widely recognized that double exchange interaction between the Mn 3+ and Mn 4+ ions through as oxygen atom is responsible for the electron hooping process and Jahn-Teller distortion with electronphonon coupling are the main mechanism for explained the colossal magnetoresistance effect [2][3].…”