Pinning mechanism of the high critical current density Sm-Ba-Cu-O superconductors with Sm210/Pd/Pt/CeO2 addition

Shih Yun Chen; In Gann Chen; Mow Kuen Wu

doi:10.1109/TASC.2003.812110

Pinning mechanism of the high critical current density Sm-Ba-Cu-O superconductors with Sm210/Pd/Pt/CeO₂ addition

Shih Yun Chen, In Gann Chen, Mow Kuen Wu

Research output: Contribution to journal › Conference article › peer-review

2 Citations (Scopus)

Abstract

The superconducting properties and the pinning mechanisms of air-processed melt-textured grown Sm-Ba-Cu-O samples with the addition of small amounts of Pd (0.5wt%), Pt (0.5wt%) and CeO₂ (1.0wt%) were studied. The superconducting properties were enhanced by these additions, especially in co-doped samples. With co-doping of Pd/Pt or Pd/CeO₂, the samples exhibited a high T_c (∼91 K) and a high J_c (0 T, 77 K) ∼ 10⁴ A/cm². Pinning forces vs magnetic field studies indicated that these samples have different pinning mechanisms from the un-doped sample. Observations of the microstructures showed that the Pt or CeO₂ addition reduced the sizes of the 211-particles significantly. EPMA results showed that the chemical distributions of these additions are different. Furthermore, TEM/EDS investigations found that the compositional fluctuation of the matrix in the sample co-doped with Pd/Pt is larger than in the sample co-doped with Pd/CeO₂.

Original language	English
Pages (from-to)	3087-3090
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2
DOIs	https://doi.org/10.1109/TASC.2003.812110
Publication status	Published - 2003 Jul 1
Event	2002 Applied Superconductivity Conference - Houston, TX, United States Duration: 2002 Aug 4 → 2002 Aug 9

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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@article{c1bbd7de31e14c6da99906a8bf8ffd2e,

title = "Pinning mechanism of the high critical current density Sm-Ba-Cu-O superconductors with Sm210/Pd/Pt/CeO2 addition",

abstract = "The superconducting properties and the pinning mechanisms of air-processed melt-textured grown Sm-Ba-Cu-O samples with the addition of small amounts of Pd (0.5wt%), Pt (0.5wt%) and CeO2 (1.0wt%) were studied. The superconducting properties were enhanced by these additions, especially in co-doped samples. With co-doping of Pd/Pt or Pd/CeO2, the samples exhibited a high Tc (∼91 K) and a high Jc (0 T, 77 K) ∼ 104 A/cm2. Pinning forces vs magnetic field studies indicated that these samples have different pinning mechanisms from the un-doped sample. Observations of the microstructures showed that the Pt or CeO2 addition reduced the sizes of the 211-particles significantly. EPMA results showed that the chemical distributions of these additions are different. Furthermore, TEM/EDS investigations found that the compositional fluctuation of the matrix in the sample co-doped with Pd/Pt is larger than in the sample co-doped with Pd/CeO2.",

author = "Chen, {Shih Yun} and Chen, {In Gann} and Wu, {Mow Kuen}",

year = "2003",

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T1 - Pinning mechanism of the high critical current density Sm-Ba-Cu-O superconductors with Sm210/Pd/Pt/CeO2 addition

AU - Chen, Shih Yun

AU - Chen, In Gann

AU - Wu, Mow Kuen

PY - 2003/7/1

Y1 - 2003/7/1

N2 - The superconducting properties and the pinning mechanisms of air-processed melt-textured grown Sm-Ba-Cu-O samples with the addition of small amounts of Pd (0.5wt%), Pt (0.5wt%) and CeO2 (1.0wt%) were studied. The superconducting properties were enhanced by these additions, especially in co-doped samples. With co-doping of Pd/Pt or Pd/CeO2, the samples exhibited a high Tc (∼91 K) and a high Jc (0 T, 77 K) ∼ 104 A/cm2. Pinning forces vs magnetic field studies indicated that these samples have different pinning mechanisms from the un-doped sample. Observations of the microstructures showed that the Pt or CeO2 addition reduced the sizes of the 211-particles significantly. EPMA results showed that the chemical distributions of these additions are different. Furthermore, TEM/EDS investigations found that the compositional fluctuation of the matrix in the sample co-doped with Pd/Pt is larger than in the sample co-doped with Pd/CeO2.

AB - The superconducting properties and the pinning mechanisms of air-processed melt-textured grown Sm-Ba-Cu-O samples with the addition of small amounts of Pd (0.5wt%), Pt (0.5wt%) and CeO2 (1.0wt%) were studied. The superconducting properties were enhanced by these additions, especially in co-doped samples. With co-doping of Pd/Pt or Pd/CeO2, the samples exhibited a high Tc (∼91 K) and a high Jc (0 T, 77 K) ∼ 104 A/cm2. Pinning forces vs magnetic field studies indicated that these samples have different pinning mechanisms from the un-doped sample. Observations of the microstructures showed that the Pt or CeO2 addition reduced the sizes of the 211-particles significantly. EPMA results showed that the chemical distributions of these additions are different. Furthermore, TEM/EDS investigations found that the compositional fluctuation of the matrix in the sample co-doped with Pd/Pt is larger than in the sample co-doped with Pd/CeO2.

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