1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Study of Bi2Sr2CaCu2O8/BiFeO3 nano-composite for electrical transport applications
Rent:
Rent this article for
USD
10.1063/1.4751277
/content/aip/journal/jap/112/5/10.1063/1.4751277
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/5/10.1063/1.4751277

Figures

Image of FIG. 1.
FIG. 1.

X-ray diffraction plot of BSCCO/BFO composite. The plots are slightly off-shifted for better clarity. The peaks marked up arrow ↑ represents 2201 phase and those marked down arrow ↓ represents BiFeO3 phase. Some extra peaks in composite samples marked (*) is observed which resembles with Bi free superconducting phase Ca7Sr7Cu24O41 (JCPDS: 48-1503).

Image of FIG. 2.
FIG. 2.

Temperature variation of normalized resistivity ρ/ρ273 for BSCCO and its composites with BFO (1%, 2%, 3%, 4%, 5%, 10%, 15%, 20%, 25%, and 30%). The two arrows show the variation of Tc-on with increasing BFO concentration in the sample. The inset shows the temperature dependence of normalized resistivity (ρ/ρ273) of BFO in the sample. This resistivity is found to obey the power law . .

Image of FIG. 3.
FIG. 3.

Plot of on-set transition temperature Tc-on and mean field transition temperature Tc1, obtained from the dR/dT plot, as a function of increasing BFO content in the sample. The lines are just a guide to eye.

Image of FIG. 4.
FIG. 4.

Plot of as a function of temperature. Deviation from the flat behavior marks the onset of pseudogap temperature T* (shown as arrow mark). The respective plots are off-shifted for better clarity.

Image of FIG. 5.
FIG. 5.

ρ-T plot is found to be good fit with up to 10% BSCCO/BFO. The solid lines are the fit corresponding to the equation.

Image of FIG. 6.
FIG. 6.

For 15% BFO, temperature dependence of resistivity is fitted with and for 20%–30% BFO composite samples. The solid lines are the fit to the respective equations.

Image of FIG. 7.
FIG. 7.

ln (Δσ) vs. ln (ε) plot of BSCCO and its composites (a) 1%, 2%, 3%, 4% (b) 5%, 10%, 15%, and 20% added BFO. 2D and 3D fitted regions are shown by straight lines along with cross over temperature at the intersection of solid lines.

Image of FIG. 8.
FIG. 8.

Variation of critical current density (Jc) as a function of temperature (T). The solid red lines are fit to the equation in the respective regions. Plot of Jc(0), obtained from the fitting of above equation in region 2, as a function of BFO content in BSCCO is shown in the last figure. Here, the solid black line is just a guide to eye.

Image of FIG. 9.
FIG. 9.

Schematic grain/grain boundary arrangement for BSCCO/BFO composites. The inner most circles are the superconducting grains and second one with light shade are the intrinsic grain boundaries. The additional grain boundary due to BFO (shown with dark shade circle) is present in second figure. The dark spots in the second figure stand for the BFO nano particles inside the grains acting as pinning centers.

Tables

Generic image for table
Table I.

Variation of superconducting parameters with BFO wt. %. Samples having BFO% more than 15, did not show zero resistance, hence not included here.

Generic image for table
Table II.

Various parameters obtained from the paraconductivity studies of BSCCO/BFO composites: 2D-3D cross-over temperature T0, 3D and 2D exponents λ3D and λ2D or λpercolative, Coherence length (ξ) and Josephson coupling constant (EJ). 20% sample is not included here as the TC2 is not available.

Generic image for table
Table III.

Values of critical current density Jc(0) and “n” in the two regions.

Loading

Article metrics loading...

/content/aip/journal/jap/112/5/10.1063/1.4751277
2012-09-10
2014-04-18
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Study of Bi2Sr2CaCu2O8/BiFeO3 nano-composite for electrical transport applications
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/5/10.1063/1.4751277
10.1063/1.4751277
SEARCH_EXPAND_ITEM