Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals

Todt, V; Miller, D J; Shi, D; Sengupta, S

Title: Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals

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Abstract

A method of fabricating bulk YBa{sub 2}Cu{sub 3}O{sub x} where compressed powder oxides and/or carbonates of Y and Ba and Cu present in mole ratios to form YBa{sub 2}Cu{sub 3}O{sub x} are heated in the presence of a Nd{sub 1+x}Ba{sub 2{minus}x}Cu{sub 3}O{sub y} seed crystal to a temperature sufficient to form a liquid phase in the YBa{sub 2}Cu{sub 3}O{sub x} while maintaining the seed crystal solid. The materials are slowly cooled to provide a YBa{sub 2}Cu{sub 3}O{sub x} material having a predetermined number of domains between 1 and 5. Crack-free single domain materials can be formed using either plate shaped seed crystals or cube shaped seed crystals with a pedestal of preferential orientation material. 7 figs.

Inventors:: Todt, V; Miller, D J; Shi, D; Sengupta, S

Issue Date:: 1998-07-07

Research Org.:: Univ. of Chicago, IL (United States)

Sponsoring Org.:: USDOE, Washington, DC (United States)

OSTI Identifier:: 672594

Patent Number(s):: 5776864

Application Number:: PAN: 8-834,687; TRN: 99:001060

Assignee:: Univ. of Chicago, IL (United States)

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

Resource Type:: Patent

Resource Relation:: Other Information: PBD: 7 Jul 1998

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; YTTRIUM OXIDES; BARIUM OXIDES; COPPER OXIDES; CRYSTAL GROWTH; FABRICATION; HEATING; PRECURSOR; NEODYMIUM OXIDES

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                    Todt, V, Miller, D J, Shi, D, and Sengupta, S. Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals.  United States: N. p., 1998. 
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                    Todt, V, Miller, D J, Shi, D, & Sengupta, S. Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals.  United States.

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                    Todt, V, Miller, D J, Shi, D, and Sengupta, S. Tue .  
        "Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals".  United States.

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@article{osti_672594,

  title        = {Large single domain 123 material produced by seeding with single crystal rare earth barium copper oxide single crystals},

  author       = {Todt, V and Miller, D J and Shi, D and Sengupta, S},

  abstractNote = {A method of fabricating bulk YBa{sub 2}Cu{sub 3}O{sub x} where compressed powder oxides and/or carbonates of Y and Ba and Cu present in mole ratios to form YBa{sub 2}Cu{sub 3}O{sub x} are heated in the presence of a Nd{sub 1+x}Ba{sub 2{minus}x}Cu{sub 3}O{sub y} seed crystal to a temperature sufficient to form a liquid phase in the YBa{sub 2}Cu{sub 3}O{sub x} while maintaining the seed crystal solid. The materials are slowly cooled to provide a YBa{sub 2}Cu{sub 3}O{sub x} material having a predetermined number of domains between 1 and 5. Crack-free single domain materials can be formed using either plate shaped seed crystals or cube shaped seed crystals with a pedestal of preferential orientation material. 7 figs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {7}

}

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