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superconductors with abnormally improved sintered after autoxidation of milled original powders
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10.1063/1.3266167
/content/aip/journal/jap/106/11/10.1063/1.3266167
http://aip.metastore.ingenta.com/content/aip/journal/jap/106/11/10.1063/1.3266167
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The XRD patterns of the original powders milled for different times and subsequently autoxidized in the air for 2 h.

Image of FIG. 2.
FIG. 2.

Temperature dependences of normalized ZFC magnetization for the sintered samples.

Image of FIG. 3.
FIG. 3.

The measured characteristics of the sample milled for 5 h and the reference sample (Ref. 6) at 20 K.

Image of FIG. 4.
FIG. 4.

The XRD pattern of the samples sintered at for 0.5 h.

Image of FIG. 5.
FIG. 5.

The SEM images of the samples sintered at for 0.5 h with (a) the reference sample and (b) the sample milled for 5 h.

Image of FIG. 6.
FIG. 6.

The HRTEM images of the sample milled for 5 h and sintered at for 0.5 h exhibiting (a) the dislocations in the grains, (b) the MgO nanoinclusions within the grains, and (c) the magnified image of the area [marked by the rectangle in Fig. 6(b)] beside a MgO nanoinclusion within the grain.

Image of FIG. 7.
FIG. 7.

The measured DSC curves of the sample milled for 5 h and the reference sample (Ref. 6) during the sintering process.

Image of FIG. 8.
FIG. 8.

The X-ray diffraction patterns of the samples milled for 5 h and sintered at different temperatures.

Image of FIG. 9.
FIG. 9.

The schematic diagram of the sintering model for different stages during the entire solid-solid reaction with (a) the initial stage, (b) the reaction between Mg and , and (c) the formation of phase.

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/content/aip/journal/jap/106/11/10.1063/1.3266167
2009-12-04
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: MgB2 superconductors with abnormally improved Jc sintered after autoxidation of milled original powders
http://aip.metastore.ingenta.com/content/aip/journal/jap/106/11/10.1063/1.3266167
10.1063/1.3266167
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