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Magnetism of ZnO nanoparticles: Dependence on crystallite size and surfactant coating
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10.1063/1.3536414
/content/aip/journal/jap/109/7/10.1063/1.3536414
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3536414
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Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Representative x-ray diffraction patterns from Zn0.99Fe0.01O nanoparticles with and without PAA coating and varying crystallite size. Shown on the right-hand side are TEM images of 8 nm nanoparticles (b) uncoated and (c) coated with 0.25 mg/mL PAA. Inset in the left panel is the size distribution from the sample in panel b.

Image of FIG. 2.
FIG. 2.

(Color online) (a) XPS spectra of the Fe 3p region from Fe doped ZnO nanoparticles with an approximate size of 6 nm and varying PAA concentrations. The highest PAA concentration results in a shift toward lower binding energies. (b) Optical absorbance spectra demonstrating a blueshift of the peak absorbance. (c) Absorbance peak position as a function of crystallite size. Curve shown is an inverse square fit.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Representative M vs H curves of Zn0.99Fe0.01O after subtracting off a linear susceptibility component, demonstrating the size effect on magnetism. Inset in (a) shows the low field region. (c) Saturation magnetization as a function of crystallite size at varying surfactant concentrations.

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/content/aip/journal/jap/109/7/10.1063/1.3536414
2011-03-21
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetism of ZnO nanoparticles: Dependence on crystallite size and surfactant coating
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3536414
10.1063/1.3536414
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