Microstructure and properties of bi-sr-ca-cu-o with additions of nanometer-scale alumina

K. C. Goretta; M. M. Cuber; L. R. Feng; B. L. Fisher; Ming Jiang; M. T. Lanagan; U. Balachandran; Ming Xu

doi:10.1109/77.784829

Microstructure and properties of bi-sr-ca-cu-o with additions of nanometer-scale alumina

K. C. Goretta, M. M. Cuber, L. R. Feng, B. L. Fisher, Ming Jiang, M. T. Lanagan, U. Balachandran, Ming Xu

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

4 Scopus citations

Abstract

Al₂O₃ particles =30 nm in size were added to Bi₂Sr₂CaCu₂O_x in a 1:4 molar ratio. For comparison, 0.3- and -3- im AI2O3 particles were added to separate batches. All of the materials were partial-melt processed. The A12O3 reacted during melting to form stable compounds, primarily of approximate composition (Sr,Ca)2A 1 O 4. All additions caused slight decreases in the Tc and melting point of the Bi2Sr2CaCu2Ox. The submicrometer AljOj additions induced large expansions in magnetic-hysteresis width at 6 K. Electron microscopy examination strongly suggested that the hysteresis expansion was related to alloying of the Bi2Sr2CaCu2Ox matrix rather than to pinning by volume defects.

Original language	English (US)
Pages (from-to)	1896-1899
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	9
Issue number	2 PART 2
DOIs	https://doi.org/10.1109/77.784829
State	Published - 1999

All Science Journal Classification (ASJC) codes

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

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10.1109/77.784829

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@article{ac95089f73404e89baf122df26487366,

title = "Microstructure and properties of bi-sr-ca-cu-o with additions of nanometer-scale alumina",

abstract = "Al2O3 particles =30 nm in size were added to Bi2Sr2CaCu2Ox in a 1:4 molar ratio. For comparison, 0.3- and -3- im AI2O3 particles were added to separate batches. All of the materials were partial-melt processed. The A12O3 reacted during melting to form stable compounds, primarily of approximate composition (Sr,Ca)2A 1 O 4. All additions caused slight decreases in the Tc and melting point of the Bi2Sr2CaCu2Ox. The submicrometer AljOj additions induced large expansions in magnetic-hysteresis width at 6 K. Electron microscopy examination strongly suggested that the hysteresis expansion was related to alloying of the Bi2Sr2CaCu2Ox matrix rather than to pinning by volume defects.",

author = "Goretta, {K. C.} and Cuber, {M. M.} and Feng, {L. R.} and Fisher, {B. L.} and Ming Jiang and Lanagan, {M. T.} and U. Balachandran and Ming Xu",

note = "Funding Information: Manuscript received September 14, 1998. This work was supported by the U.S. Department of Energy (DOE), Energy Efficiency and Renewable Energy, as part of a DOE program to develop electric power technology, and the Argonne Division of Educational programs with funding from DOE, under Contract W-31-109- Eng-38. *M. T. Lanagan is now with the Pennsylvania State University, University Park, PA. **Ming Xu is now with Lucent Technologies, Naperville, IL.",

year = "1999",

doi = "10.1109/77.784829",

language = "English (US)",

volume = "9",

pages = "1896--1899",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2 PART 2",

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TY - JOUR

T1 - Microstructure and properties of bi-sr-ca-cu-o with additions of nanometer-scale alumina

AU - Goretta, K. C.

AU - Cuber, M. M.

AU - Feng, L. R.

AU - Fisher, B. L.

AU - Jiang, Ming

AU - Lanagan, M. T.

AU - Balachandran, U.

AU - Xu, Ming

N1 - Funding Information: Manuscript received September 14, 1998. This work was supported by the U.S. Department of Energy (DOE), Energy Efficiency and Renewable Energy, as part of a DOE program to develop electric power technology, and the Argonne Division of Educational programs with funding from DOE, under Contract W-31-109- Eng-38. *M. T. Lanagan is now with the Pennsylvania State University, University Park, PA. **Ming Xu is now with Lucent Technologies, Naperville, IL.

PY - 1999

Y1 - 1999

N2 - Al2O3 particles =30 nm in size were added to Bi2Sr2CaCu2Ox in a 1:4 molar ratio. For comparison, 0.3- and -3- im AI2O3 particles were added to separate batches. All of the materials were partial-melt processed. The A12O3 reacted during melting to form stable compounds, primarily of approximate composition (Sr,Ca)2A 1 O 4. All additions caused slight decreases in the Tc and melting point of the Bi2Sr2CaCu2Ox. The submicrometer AljOj additions induced large expansions in magnetic-hysteresis width at 6 K. Electron microscopy examination strongly suggested that the hysteresis expansion was related to alloying of the Bi2Sr2CaCu2Ox matrix rather than to pinning by volume defects.

AB - Al2O3 particles =30 nm in size were added to Bi2Sr2CaCu2Ox in a 1:4 molar ratio. For comparison, 0.3- and -3- im AI2O3 particles were added to separate batches. All of the materials were partial-melt processed. The A12O3 reacted during melting to form stable compounds, primarily of approximate composition (Sr,Ca)2A 1 O 4. All additions caused slight decreases in the Tc and melting point of the Bi2Sr2CaCu2Ox. The submicrometer AljOj additions induced large expansions in magnetic-hysteresis width at 6 K. Electron microscopy examination strongly suggested that the hysteresis expansion was related to alloying of the Bi2Sr2CaCu2Ox matrix rather than to pinning by volume defects.

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 2 PART 2

ER -

Microstructure and properties of bi-sr-ca-cu-o with additions of nanometer-scale alumina

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