(a) TEM and (b) HRTEM image of nanocrystals. The insets of (a) and (b) show the element distributions of Zn, Co, and O along the white line by line scanning under STEM mode and the FFT of the HRTEM picture, respectively.
(a) XRD spectra of powders and commercial . The inset shows the magnified pattern of the spectrum in the green frame. (b) Evolution of the lattice constants , , the interplanar spacing of (110) plane, and unit cell volume of the wurtzite phases of as a function of values.
Raman spectra of and . The inset shows Guass fit of the Raman peak from of .
UV-vis absorption spectra of and pure ZnO powders.
curves of powders detected by VSM. The insert shows the evolution of magnetizations of as a function of value.
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