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Superconductivity and the disorder effect in Ag and Al double doped
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View: Figures


Image of FIG. 1.
FIG. 1.

X-ray diffraction patterns of samples .

Image of FIG. 2.
FIG. 2.

Variations of the - and -axis lattice parameters and the lattice cell volume as a function of doping level .

Image of FIG. 3.
FIG. 3.

(a) HRTEM image of a single crystal selected from the powder of the doped sample with and the corresponding (b) [001]-zone-axis electron diffraction pattern and (c) energy dispersion spectrum for the selected area.

Image of FIG. 4.
FIG. 4.

Raman spectra of with different doping contents.

Image of FIG. 5.
FIG. 5.

Raman spectrum of the doped with . The open circle represents the measurement data, and the solid curve is the fitting result.

Image of FIG. 6.
FIG. 6.

Double doping content dependence of the Raman peak position of .

Image of FIG. 7.
FIG. 7.

Temperature dependence of the resistivity for with different doping concentrations.

Image of FIG. 8.
FIG. 8.

Dependence of superconducting transition temperature on double doping level .

Image of FIG. 9.
FIG. 9.

Variation of the corrected superconducting transition temperature with the ionic size variance for samples.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Superconductivity and the disorder effect in Ag and Al double doped MgB2