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Room-temperature ferromagnetism in Fe-doped nanocrystals
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) XRD patterns with Fe doping concentration ranging from 0% to 4%. (b) A comparison of (100) diffraction peak positions for the patterns. (c) A typical TEM image of the assembled structure of nanoparticles with 4% Fe doping. The inset includes a SAED pattern corresponding to the TEM image. (d) HRTEM image shows the connection region of three nanoparticles, as the Arabic numerals 1, 2, and 3 denoted. The insets of (d) present the SAED patterns of HRTEM image by FFT, corresponding to three particles, respectively. (e) The EDX spectroscopy pattern for the sample with 4% Fe doping.

Image of FIG. 2.
FIG. 2.

curves of the samples with different Fe doping concentrations at .

Image of FIG. 3.
FIG. 3.

curve for the sample with 1% Fe doping. The insets show curves at different temperatures for this sample.

Image of FIG. 4.
FIG. 4.

[(a) and (b)] TEM images of nanoparticles without and with PEG as the surfactant, respectively. The inset shows the corresponding SAED pattern. (c) curves corresponding to the two samples at .

Image of FIG. 5.
FIG. 5.

-center exchange interaction for the room-temperature ferromagnetism of Fe-doped nanocrystals.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Room-temperature ferromagnetism in Fe-doped PbTiO3 nanocrystals