Evidence for pinning by (Sr,Ca) 2CuOy particles in partial-melting processed bulk Bi2Sr2CaCu2O8+δ ceramics

M. R. Koblischka; S. L. Huang; K. Fossheim; T. H. Johansen; H. Bratsberg

doi:10.1016/S0921-4534(98)00105-1

Evidence for pinning by (Sr,Ca) ₂CuO_y particles in partial-melting processed bulk Bi₂Sr₂CaCu₂O_8+δ ceramics

M. R. Koblischka, S. L. Huang, K. Fossheim, T. H. Johansen, H. Bratsberg

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

14 Citations (Scopus)

Abstract

Flux distributions of partial-melting processed Bi₂Sr₂CaCu₂O_8+δ ceramics are obtained using magneto-optic imaging. In remanent states (μ₀H_a = 0 T), large amounts of trapped flux are observed along (Sr,Ca)₂CuO_y particles embedded in the Bi₂Sr₂CaCu₂O_8+δ matrix. Despite the relatively large size of these particles (up to 30 μm), the pinning effect is similar to that of Y₂BaCuO₅ particles in melt-processed YBa₂Cu₃O_7-δ. Furthermore, we discuss how the pinning capability of non-superconducting particles of different sizes and densities will show up in magneto-optic images.

Original language	English
Pages (from-to)	207-211
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	300
Issue number	3-4
DOIs	https://doi.org/10.1016/S0921-4534(98)00105-1
Publication status	Published - 1998 Jan 1
Externally published	Yes

Keywords

(Sr,Ca)CuO particles
Ceramics
Pinning properties

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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title = "Evidence for pinning by (Sr,Ca) 2CuOy particles in partial-melting processed bulk Bi2Sr2CaCu2O8+δ ceramics",

abstract = "Flux distributions of partial-melting processed Bi2Sr2CaCu2O8+δ ceramics are obtained using magneto-optic imaging. In remanent states (μ0Ha = 0 T), large amounts of trapped flux are observed along (Sr,Ca)2CuOy particles embedded in the Bi2Sr2CaCu2O8+δ matrix. Despite the relatively large size of these particles (up to 30 μm), the pinning effect is similar to that of Y2BaCuO5 particles in melt-processed YBa2Cu3O7-δ. Furthermore, we discuss how the pinning capability of non-superconducting particles of different sizes and densities will show up in magneto-optic images.",

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author = "Koblischka, {M. R.} and Huang, {S. L.} and K. Fossheim and Johansen, {T. H.} and H. Bratsberg",

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T1 - Evidence for pinning by (Sr,Ca) 2CuOy particles in partial-melting processed bulk Bi2Sr2CaCu2O8+δ ceramics

AU - Koblischka, M. R.

AU - Huang, S. L.

AU - Fossheim, K.

AU - Johansen, T. H.

AU - Bratsberg, H.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - Flux distributions of partial-melting processed Bi2Sr2CaCu2O8+δ ceramics are obtained using magneto-optic imaging. In remanent states (μ0Ha = 0 T), large amounts of trapped flux are observed along (Sr,Ca)2CuOy particles embedded in the Bi2Sr2CaCu2O8+δ matrix. Despite the relatively large size of these particles (up to 30 μm), the pinning effect is similar to that of Y2BaCuO5 particles in melt-processed YBa2Cu3O7-δ. Furthermore, we discuss how the pinning capability of non-superconducting particles of different sizes and densities will show up in magneto-optic images.

AB - Flux distributions of partial-melting processed Bi2Sr2CaCu2O8+δ ceramics are obtained using magneto-optic imaging. In remanent states (μ0Ha = 0 T), large amounts of trapped flux are observed along (Sr,Ca)2CuOy particles embedded in the Bi2Sr2CaCu2O8+δ matrix. Despite the relatively large size of these particles (up to 30 μm), the pinning effect is similar to that of Y2BaCuO5 particles in melt-processed YBa2Cu3O7-δ. Furthermore, we discuss how the pinning capability of non-superconducting particles of different sizes and densities will show up in magneto-optic images.

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