1. XRD patterns of natural flake graphite (a), GO (b), Co0.5Zn0.5Fe2O4 (c), and rGO/Co0.5Zn0.5Fe2O4 composite (d)
2. Raman spectra of natural flake graphite, GO (a) and Co0.5Zn0.5Fe2O4, rGO/Co0.5Zn0.5Fe2O4 composite (b)
3. FT-IR spectra of natural flake graphite, GO (a), Co0.5Zn0.5Fe2O4 (b) and rGO/Co0.5Zn0.5Fe2O4 (c)
4. TEM images of rGO/Co0.5Zn0.5Fe2O4-1(a), rGO/ Co0.5Zn0.5Fe2O4-2 (b), rGO/Co0.5Zn0.5Fe2O4-3 (c), and rGO/ Co0.5Zn0.5Fe2O4-4 (d)
5. Real part of complex permittivity (a), imaginary part of complex permittivity (b), real part of complex permeability (c), imaginary part of complex permeability (d), dielectric loss tangent (e) and magnetic loss tangent (f) of GO、Co0.5Zn0.5Fe2O4 and rGO/Co0.5Zn0.5Fe2O4 composite with different ratios
6. Real part of complex permittivity (ε°)-imaginary part of complex permittivity (ε) curves of GO and rGO/Co0.5Zn0.5Fe2O4 composites with different ratios
7. Curves of reflectivity and frequency of GO and rGO/Co0.5Zn0.5Fe2O4 composites with different ratios
Structural formula | 2θ/(°) | a/nm | (311) Priority crystallization diffraction peak |
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FWHM/rad | Intensity/(a.u.) | Size/nm |
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Co0.5Zn0.5Fe2O4 | 35.597 | 0.8391 | 0.618 | 86 | 13.8 | rGO/Co0.5Zn0.5Fe2O4 | 35.595 | 0.8358 | 0.466 | 94 | 17.7 |
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Table 1. Composition and structure parameters of ferrite
Samples | Graphite | GO | rGO/Co0.5Zn0.5Fe2O4 |
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ID/IG | 0.21 | 0.95 | 1.02 |
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Table 2. ID/IG ratios of natural flake graphite, GO and rGO/Co0.5Zn0.5Fe2O4 composite