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Annealing effect on the excess conductivity of Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−δ (M = K, Na, Li, Tl) superconductors
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10.1063/1.3684601
/content/aip/journal/jap/111/5/10.1063/1.3684601
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/5/10.1063/1.3684601

Figures

Image of FIG. 1.
FIG. 1.

X-ray diffraction pattern of O2 annealed Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−δ (M = K, Na, Li, Tl) superconductor samples.

Image of FIG. 2.
FIG. 2.

(Color online) Plot of ln(Δσ) vs ln(ɛ) of Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−δ (M = K) sample. The scattered points are experimentally found FIC. Solid and dashed lines show 3DAL and 2DAL fitting with a distinct crossover temperature. The inset shows the resistivity measurement with extrapolated linear fit and its derivative curve.

Image of FIG. 3.
FIG. 3.

(Color online) Plot of ln(Δσ) vs ln(ɛ) of Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−δ (M = Na) sample. The scattered points are experimentally found FIC. Solid and dashed lines show 3DAL and 2DAL fitting with a distinct crossover temperature. The inset shows the resistivity measurement with extrapolated linear fit and its derivative curve.

Image of FIG. 4.
FIG. 4.

(Color online) Plot of ln(Δσ) vs ln(ɛ) of Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−δ (M = Li) sample. The scattered points are experimentally found FIC. Solid and dashed lines show 3DAL and 2DAL fitting with a distinct crossover temperature. The inset shows the resistivity measurement with extrapolated linear fit and its derivative curve.

Image of FIG. 5.
FIG. 5.

(Color online) Plot of ln(Δσ) vs ln(ɛ) of Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−δ (M = Tl) sample. The scattered points are experimentally found FIC. Solid and dashed lines show 3DAL and 2DAL fitting with a distinct crossover temperature. The inset shows the resistivity measurement with extrapolated linear fit and its derivative curve.

Tables

Generic image for table
Table I.

The T c , T 0, T*, T c m f , α, λ3D, λ2D, and ΔT c of as-prepared Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−Δ; (M = K, Na, Li, Tl) samples obtained by fitting observed experimental data to AL equations.

Generic image for table
Table II.

Temperature range and widtha of 2DAL and 3DAL regimes for Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−Δ; (M = K, Na, Li, Tl) as-prepared samples.

Generic image for table
Table III.

The T c , T 0, , T*, α, λ3D, λ2D, and ΔT c of O2 annealed Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−Δ; (M = K, Ti, Na, Li) samples obtained by fitting observed experimental data to AL equations.

Generic image for table
Table IV.

Temperature range and widtha of 2DAL and 3DAL regimes for Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−Δ; (M = K, Tl, Na, Li) O2 annealed samples.

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/content/aip/journal/jap/111/5/10.1063/1.3684601
2012-03-07
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Annealing effect on the excess conductivity of Cu0.5Tl0.25M0.25Ba2Ca2Cu3O10−δ (M = K, Na, Li, Tl) superconductors
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/5/10.1063/1.3684601
10.1063/1.3684601
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