Pinning enhanced anomalous magnetization in single crystal Nd1.85Ce0.15CuO4-δ superconductors

F. Zuo; J. L. Peng; R. L. Greene

doi:10.1016/S0921-4534(97)01209-4

Pinning enhanced anomalous magnetization in single crystal Nd_1.85Ce_0.15CuO_4-δ superconductors

F. Zuo, J. L. Peng, R. L. Greene

Physics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Anomalous magnetization on several single crystals of Nd_1.85Ce_0.15CuO_4-δ superconductor of different T_c's and transition widths has been studied in the magnetic field parallel to c-axis direction. The characteristic fishtail magnetizations are observed for all samples measured, with the secondary peak field decreasing with decreasing T_c and a corresponding change in the relative peak heights. The critical currents corresponding to the maximum widths in the hysteresis loops increase with decreasing T_c. These results suggest that increased pinning enhances the anomalous magnetization, consistent with a model that the secondary peak is due to a dimensional crossover from 3D to 2D pinning.

Original language	English (US)
Pages (from-to)	2261-2262
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	282
Issue number	PART 4
DOIs	https://doi.org/10.1016/S0921-4534(97)01209-4
State	Published - Aug 1997

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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abstract = "Anomalous magnetization on several single crystals of Nd1.85Ce0.15CuO4-δ superconductor of different Tc's and transition widths has been studied in the magnetic field parallel to c-axis direction. The characteristic fishtail magnetizations are observed for all samples measured, with the secondary peak field decreasing with decreasing Tc and a corresponding change in the relative peak heights. The critical currents corresponding to the maximum widths in the hysteresis loops increase with decreasing Tc. These results suggest that increased pinning enhances the anomalous magnetization, consistent with a model that the secondary peak is due to a dimensional crossover from 3D to 2D pinning.",

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AU - Peng, J. L.

AU - Greene, R. L.

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N2 - Anomalous magnetization on several single crystals of Nd1.85Ce0.15CuO4-δ superconductor of different Tc's and transition widths has been studied in the magnetic field parallel to c-axis direction. The characteristic fishtail magnetizations are observed for all samples measured, with the secondary peak field decreasing with decreasing Tc and a corresponding change in the relative peak heights. The critical currents corresponding to the maximum widths in the hysteresis loops increase with decreasing Tc. These results suggest that increased pinning enhances the anomalous magnetization, consistent with a model that the secondary peak is due to a dimensional crossover from 3D to 2D pinning.

AB - Anomalous magnetization on several single crystals of Nd1.85Ce0.15CuO4-δ superconductor of different Tc's and transition widths has been studied in the magnetic field parallel to c-axis direction. The characteristic fishtail magnetizations are observed for all samples measured, with the secondary peak field decreasing with decreasing Tc and a corresponding change in the relative peak heights. The critical currents corresponding to the maximum widths in the hysteresis loops increase with decreasing Tc. These results suggest that increased pinning enhances the anomalous magnetization, consistent with a model that the secondary peak is due to a dimensional crossover from 3D to 2D pinning.

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