Strain-driven broken twin boundary coherence in YBa2Cu3O7−δ nanocomposite thin films

Abstract

Articles you may be interested inSize effect of out-of-plane thermal conductivity of epitaxial YBa2Cu3O7 thin films at room temperature measured by photothermal radiometry Surface texture and interior residual stress variation induced by thickness of YBa2Cu3O7-thin films

Superconducting YBa2Cu3O7–δ Nanocomposites Using Preformed ZrO2 Nanocrystals: Growth Mechanisms and Vortex Pinning Properties

“…The broadening of the peak at H//ab (θ = 90°) is typically attributed to the effective pinning of the stacking faults present in the CSD nanocomposite. [ 18 ] Clearly, the J C (H//ab) peak is much wider for the 10 mol% ZrO 2 nanocomposite fi lm compared to the pristine fi lm at all magnetic fi elds (see Figure 7 at 65 K). This peak is typically correlated to twin boundary pinning.…”

“…As this peak can be observed in the pristine YBCO fi lm, the reduction in the nanocomposite indicates a loss of the twin boundary coherence along the c -axis, as previously reported. [ 18 ] Clearly, the J C (H//ab) peak is much wider for the 10 mol% ZrO 2 nanocomposite fi lm compared to the pristine fi lm at all magnetic fi elds (see Figure 7 at 65 K). The determination of the FWHM of this peak, Δθ, for all nanocomposites at 1 T, 5 T, and 9 T at 65 K is shown in Figure 7 B.…”

“…Here, we confi rm that the nanocomposites show a lower IL, which we ascribe to a lower c -axis correlation of twin boundaries due to the presence of stacking faults. [ 18 ] This reduction is more evident in www.MaterialsViews.com www.advelectronicmat.de Adv. Electron.…”

Emerging Diluted Ferromagnetism in High‐Tc Superconductors Driven by Point Defect Clusters

“…[ 10 ] Accordingly, signifi cant efforts have been made in recent years toward nanoengineering Y123 fi lms, such as the assembly of nonsuperconducting phases within the Y123 matrix, which have proven to enhance their performance in power applications. [11][12][13][14][15][16][17][18][19][20] In chemical solution deposition (CSD) derived Y123 fi lms displaying enhanced vortex pinning effi ciency, the introduction of secondary phases within the superconducting matrix renders a huge increase of Y124 intergrowths [ 19,21 ] while keeping critical temperature ( T c ) of ≈90 K. The density of intergrowths may vary signifi cantly with the growth method and the processing and in the present study we used CSD derived fi lms in which these intergrowths have higher concentrations.…”

Volume Resistive Switching in metallic perovskite oxides driven by the Metal-Insulator Transition

“…However, there are different kinds of nanometric intrinsic defects in the superconducting matrix that are able to pin the vortices and immobilize them, such as low angle grain boundaries, stacking faults, dislocations, twin boundaries [114,120]. In addition, artificial pinning centres can be added to the crystal structure in order to enhance vortex pinning and consequently, the critical current density, J c of the material.…”