Preparation and composition of superconducting copper oxides based on Ga-O layers

Title: Preparation and composition of superconducting copper oxides based on Ga-O layers

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Abstract

A high temperature superconducting material with the general formula GaSr.sub.2 Ln.sub.1-x MxCu.sub.2 O.sub.7.+-.w wherein Ln is selected from the group consisting of La, Ce, Pt, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Y and M is selected from the group consisting of Ca and Sr, 0.2.ltoreq.x.ltoreq.0.4 and w is a small fraction of one. A method of preparing this high temperature superconducting material is provided which includes heating and cooling a mixture to produce a crystalline material which is subsequently fired, ground and annealed at high pressure and temperature in oxygen to establish superconductivity.

Inventors:

Dabrowski, Bogdan ^[1]; Vaughey, J T ^[2]; Poeppelmeier, Kenneth R ^[3]

Bolingbrook, IL
Houston, TX
Evanston, IL

Issue Date:: 1994-01-01

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

OSTI Identifier:: 869658

Patent Number(s):: 5374611

Assignee:: University of Chicago (Chicago, IL); Northwestern University (Evanston, IL)

Patent Classifications (CPCs):: H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

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H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
H01L39/126 - {comprising copper oxide}
H01L39/2419 - {the superconducting material comprising copper oxide}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S505/777 - Lanthanum, e.g. La2CuO4
Y10S505/778 - Alkaline earth, i.e. Ca, Sr, Ba, Ra

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DOE Contract Number:: W-31109-ENG-38

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: preparation; composition; superconducting; copper; oxides; based; ga-o; layers; temperature; material; formula; gasr; ln; 1-x; mxcu; selected; consisting; eu; gd; tb; tm; sr; ltoreq; fraction; method; preparing; provided; heating; cooling; mixture; produce; crystalline; subsequently; fired; ground; annealed; pressure; oxygen; establish; superconductivity; crystalline material; conducting material; copper oxide; superconducting material; temperature superconducting; oxides based; /505/252/

Citation Formats


                    Dabrowski, Bogdan, Vaughey, J T, and Poeppelmeier, Kenneth R. Preparation and composition of superconducting copper oxides based on Ga-O layers.  United States: N. p., 1994. 
        Web.

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                    Dabrowski, Bogdan, Vaughey, J T, & Poeppelmeier, Kenneth R. Preparation and composition of superconducting copper oxides based on Ga-O layers.  United States.

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                    Dabrowski, Bogdan, Vaughey, J T, and Poeppelmeier, Kenneth R. Sat .  
        "Preparation and composition of superconducting copper oxides based on Ga-O layers".  United States.  https://www.osti.gov/servlets/purl/869658.

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@article{osti_869658,

  title        = {Preparation and composition of superconducting copper oxides based on Ga-O layers},

  author       = {Dabrowski, Bogdan and Vaughey, J T and Poeppelmeier, Kenneth R},

  abstractNote = {A high temperature superconducting material with the general formula GaSr.sub.2 Ln.sub.1-x MxCu.sub.2 O.sub.7.+-.w wherein Ln is selected from the group consisting of La, Ce, Pt, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Y and M is selected from the group consisting of Ca and Sr, 0.2.ltoreq.x.ltoreq.0.4 and w is a small fraction of one. A method of preparing this high temperature superconducting material is provided which includes heating and cooling a mixture to produce a crystalline material which is subsequently fired, ground and annealed at high pressure and temperature in oxygen to establish superconductivity.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1994},

  month        = {1}

}

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