High resolution transmission electron microscopy correlated to in-field Mössbauer spectrometry to investigate exchange coupling behavior and surface frustrated moments
作者： Mohamed Saidani , Wajdi Belkacem , Loïc Patout , Jean Marc Greneche , Ahmed Charaï
DOI: 10.1016/J.ACTAMAT.2018.03.066
关键词: Nanoparticle 、 Materials science 、 Magnetic field 、 Mossbauer spectrometry 、 Field (physics) 、 High-resolution transmission electron microscopy 、 Analytical chemistry 、 Hysteresis 、 Coupling (piping) 、 Magnetometer
摘要: Abstract In this work, we present a correlation between High Resolution Transmission Electron Microscopy (HRTEM) and in-field Mossbauer spectrometry to point out exchange coupling behavior, surface effects chemical disorder in CoxFe3-xO4 cobalt ferrite nanoparticles. The samples were synthesized by solvothermal route. hysteresis loops, recorded using Vibrating Sample Magnetometer (VSM), suggest jump-like behavior nearby zero applied magnetic fields. HRTEM micrographs illustrate the presence of faceted nanoparticles for x
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