Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor

Title: Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor

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Abstract

An article and method of manufacture of (Bi,Pb)-Sr-Ca-Cu-O superconductor. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi,Pb)-Sr-Ca-Cu-O superconductor.

Inventors:

Dorris, Stephen E ^[1]; Poeppel, Roger B ^[2]; Prorok, Barton C ^[3]; Lanagan, Michael T ^[4]; Maroni, Victor A ^[5]

La Grange Park, IL
Glen Ellyn, IL
Harrisville, PA
Woodridge, IL
Naperville, IL

Publication Date:: 1994-01-01

Research Org.:: Argonne National Laboratory (ANL), Argonne, IL

OSTI Identifier:: 869545

Patent Number(s):: US 5354535

Assignee:: University of Chicago (Chicago, IL)

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

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: synthesis; highly; phase; pure; pb; -sr-ca-cu-o; superconductor; article; method; manufacture; manufactured; preparing; powdered; mixture; bismuth; oxide; lead; strontium; carbonate; calcium; copper; prepared; mixtures; calcined; separately; combined; resulting; subjected; powder; tube; deformation; thermal; processing; produce; substantially; -sr-ca-cu-o superconductor; copper oxide; calcium carbonate; lead oxide; thermal processing; resulting combined; combined mixture; strontium carbonate; phase pure; powdered mixture; highly phase; bismuth oxide; /505/419/

Citation Formats


                    Dorris, Stephen E, Poeppel, Roger B, Prorok, Barton C, Lanagan, Michael T, and Maroni, Victor A. Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor.  United States: N. p., 1994. 
        Web.

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                    Dorris, Stephen E, Poeppel, Roger B, Prorok, Barton C, Lanagan, Michael T, & Maroni, Victor A. Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor.  United States.

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                    Dorris, Stephen E, Poeppel, Roger B, Prorok, Barton C, Lanagan, Michael T, and Maroni, Victor A. Sat .  
        "Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor".  United States.  https://www.osti.gov/servlets/purl/869545.

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@article{osti_869545,

  title        = {Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor},

  author       = {Dorris, Stephen E and Poeppel, Roger B and Prorok, Barton C and Lanagan, Michael T and Maroni, Victor A},

  abstractNote = {An article and method of manufacture of (Bi,Pb)-Sr-Ca-Cu-O superconductor. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi,Pb)-Sr-Ca-Cu-O superconductor.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/869545},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1994},

  month        = {1}

}

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Full Text Available
Comparison of the low-temperature specific heat of Fe- and Co-doped Bi{sub 1.8}Pb{sub 0.2}Sr{sub 2}Ca(Cu{sub 1{minus}{ital x}}{ital M}{sub {ital x}}){sub 2}O{sub 8} ({ital M}=Fe or Co): Anomolously enhanced electronic contribution due to Fe doping

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Specific-heat data of Fe-doped Bi{sub 1.8}Pb{sub 0.2}Sr{sub 2}Ca(Cu{sub 1{minus}{ital x}}Fe{sub {ital x}}){sub 2}O{sub 8} in the range 2{endash}20 K are presented for {ital x}=1, 2, 4, 6, and 8{percent}. The data are compared with our previous measurements on Co-doped bismuth-strontium-calcium-copper oxide superconductors of nominal composition Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} (BISCO 2212). Both Fe and Co are magnetic substitutions with effective moments close to their free-ion value. In the normal state the magnetic susceptibility increases by more than a factor 2 over the doping range due to effective-mass enhancement. In the superconducting state both ions act as magnetic pair breakers.more »« less
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