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Co2+, Ni2+ and Co2+/Ni2+ co-doped β-MnO2 were synthesized by hydrothermal reaction to study the influence of crystal defects on the microwave dielectric response. The samples were characterized by X-ray powder diffraction (XRD), X-ray fluorescence spectrometry (XRF), transmission electron microscopy (TEM), and vector network analyzer. The construction of defective β-MnO2, with doping of Co2+ and Mn/O...
Surface-protected nanoparticles of CoPt were synthesised by means of a polyol process and subjected to a post heat treatment procedure at temperatures up to 700 o C under flowing argon gas. This led to the transformation from a disordered fcc into a L1 0 long-range ordered (LRO) phase, which was verified by X-ray diffraction and high-resolution electron microscopy (HRTEM) studies on...
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