Open AccessEffects of strain on La0.67-x Prx Ca0.33 MnO3, LaMn1-x Cox O3 and LaMn1-x Nix O3 magnetite samples
Author(s) -
Javier Alberto Olarte Torres,
María Cristina Cifuentes Arcila,
Harvey Andrés Suárez Moreno
Publication year - 2019
Publication title -
dyna
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.164
H-Index - 18
eISSN - 2346-2183
pISSN - 0012-7353
DOI - 10.15446/dyna.v86n211.78081
Subject(s) - magnetite , paramagnetism , ferromagnetism , materials science , electrical resistivity and conductivity , metal , manganite , strain (injury) , chemistry , analytical chemistry (journal) , nuclear magnetic resonance , condensed matter physics , metallurgy , medicine , physics , chromatography , engineering , electrical engineering
This paper presents the results obtained from the synthesis and morphological characterization of different magnetite samples: La0.67-x Prx Ca0.33 MnO3.LaMn1-x Cox O3 and LaMn1-x Nix O3 at 0.13 ≤ ≤ 0.67 produced by a solid-state reaction mechanism and 1−(/)3 at 0.0 ≤ ≤ 0.5 produced by the sol-gel method. These samples were characterized using X-ray diffraction spectroscopy and by measuring electric resistivity and magnetic susceptibility which were carried out as a function of temperature. Notably, the effects of strain and compressive strength on the lattices of magnetite samples were highly dependent on the concentration of , , and . Moreover, the transition temperatures of metal-insulator and ferromagnetic-paramagnetic phases also largely depend on these strength effects, e.g., at higher concentrations of , effects of increased strain strength were observed, relocating the shifts of ferromagnetic-paramagnetic transitions to lower temperatures. On the other hand, effects of increased compressive strength were observed at higher concentrations of and , relocating the shifts of ferromagnetic-paramagnetic and metal-insulator transitions to higher temperatures.