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Robust high-temperature magnetic pinning induced by proximity in YBa2Cu3O7−δ /La0.67Sr0.33MnO3 hybrids
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10.1063/1.3573491
/content/aip/journal/jap/109/7/10.1063/1.3573491
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3573491
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Raman spectra of the YBCO/LSMO bilayer and the reference sample, a pure YBCO film. Three distinguishable modes with pronounced intensity are identified and categorized. (b) Configuration for the O2+/O3− phonon mode in YBCO lattices.

Image of FIG. 2.
FIG. 2.

(Color online) Field dependence of the critical current density for the bilayer at different temperatures. The values are extracted from the magnetization curves.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Field dependence of the critical current density at three given temperatures of 10, 40, and 60 K for both the bilayer and the pure YBCO film. The inset gives the field dependence at 77 K, from which an obvious crossing is observed. (b) Field dependence of the critical current density at 50, 70, and 77 K for pure and doped YBCO films with different nanoparticle additions in a log-log plot. Arrows indicate the crossover of between them.

Image of FIG. 4.
FIG. 4.

(Color online) Temperature dependences of the zero-field critical current density for the bilayer and the pure YBCO film. Solid lines are a fit to .

Image of FIG. 5.
FIG. 5.

(Color online) Field dependence of the fitting exponent n for the present bilayer and the pure sample. The n values are obtained from the fitting to at different magnetic fields.

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/content/aip/journal/jap/109/7/10.1063/1.3573491
2011-04-15
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Robust high-temperature magnetic pinning induced by proximity in YBa2Cu3O7−δ/La0.67Sr0.33MnO3 hybrids
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3573491
10.1063/1.3573491
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