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    • 1. 发明授权
    • Coated precursor powder for oxide superdonductors
    • 氧化物超导体的涂覆前体粉末
    • US5455223A
    • 1995-10-03
    • US21768
    • 1993-02-24
    • Martin RupichGilbert N. Riley, Jr.William L. Carter
    • Martin RupichGilbert N. Riley, Jr.William L. Carter
    • C01B13/14C01G1/00C01G15/00C01G29/00C04B35/45C04B35/628H01L39/24H01B12/00H01L39/12
    • C04B35/62886C04B35/4512C04B35/4521C04B35/4525C04B35/62805H01L39/2477C04B2235/3208C04B2235/3213C04B2235/3215C04B2235/3281C04B2235/3296C04B2235/3298C04B2235/441C04B2235/5292Y10S505/734Y10S505/739Y10S505/785Y10S505/812Y10T428/2991
    • In one aspect, the present invention is a precursor powder to an oxide superconductor, namely a coated particle comprising a metal oxide particle core (including a mixed metal oxide, e.g., BSCCO-2212 or YBCO-123) on which is deposited a secondary metal oxide coating (e.g., M.sub.n CuO.sub.x or CuO). The metal oxide particle and secondary metal oxide coating together comprise metallic elements having a stoichiometry appropriate for the formation of a desired oxide superconductor. The metal oxide reacts with the secondary metal oxide under suitable conditions (e.g., heating) to form the desired oxide superconductor (e.g., BSCCO-2223 or YBCO-124). In another aspect, the invention is a method for preparing such a coated particle, comprising: preparing a precursor solution comprising a metal .mu.-oxo alkoxide containing metallic constituents of an oxide coating; dispersing a metal oxide powder into said precursor solution; removing excess solvent from said precursor solution, thereby depositing a precursor film comprising said metallic constituents of said oxide coating on said mixed oxide powder; and decomposing said precursor film to form said metal oxide coating. Also encompassed is a method of forming a textured oxide superconductor of desired form.
    • 一方面,本发明是氧化物超导体的前体粉末,即包含金属氧化物粒子芯(包括混合金属氧化物,例如BSCCO-2212或YBCO-123)的涂覆颗粒,其上沉积有二次金属 氧化物涂层(例如MnCuOx或CuO)。 金属氧化物颗粒和二次金属氧化物涂层一起包括具有适于形成所需氧化物超导体的化学计量的金属元素。 金属氧化物在合适的条件(例如加热)下与二次金属氧化物反应形成所需的氧化物超导体(例如,BSCCO-2223或YBCO-124)。 另一方面,本发明是制备这种涂覆颗粒的方法,包括:制备包含含有氧化物涂层的金属成分的金属茂氧化物醇的前体溶液; 将金属氧化物粉末分散到所述前体溶液中; 从所述前体溶液中除去多余的溶剂,由此将包含所述氧化物涂层的所述金属成分的前体膜沉积在所述混合氧化物粉末上; 并分解所述前体膜以形成所述金属氧化物涂层。 还包括形成所需形式的织构氧化物超导体的方法。
    • 5. 发明申请
    • Oxide films with nanodot flux pinning centers
    • 具有纳多点磁通钉扎中心的氧化膜
    • US20050159298A1
    • 2005-07-21
    • US10758710
    • 2004-01-16
    • Martin RupichThomas KodenkandathWei ZhangXiaoping Li
    • Martin RupichThomas KodenkandathWei ZhangXiaoping Li
    • B01J29/00H01L39/24
    • H01L39/2483H01L39/2425
    • A method for producing a thin film includes disposing a precursor solution onto a substrate to form a precursor film. The precursor solution contains precursor components to a rare-earth/alkaline-earth-metal/transition-metal oxide including a salt of a rare earth element, a salt of an alkaline earth metal, and a salt of a transition metal in one or more solvents, wherein at least one of the salts is a fluoride-containing salt. The precursor solution also contains an additive component comprising one or more metal compounds capable of forming a second phase nanoparticle, either alone or in combination with one or more of the precursor components of the precursor solution or a dopant component comprising one or more metal compounds capable of substituting for an element of the rare-earth/alkaline-earth-metal/transition-metal oxide, and treating the precursor film to form an intermediate metal oxyfluoride including the rare earth, the alkaline earth metal, the transition metal and the additive metal or dopant metal of the precursor solution.
    • 制造薄膜的方法包括将前体溶液设置在基板上以形成前体膜。 前体溶液含有稀土/碱土金属/过渡金属氧化物的前体成分,所述稀土/碱土金属/过渡金属氧化物包括稀土元素的盐,碱土金属的盐和过渡金属的盐在一个或多个 溶剂,其中至少一种盐是含氟化物的盐。 前体溶液还包含添加剂组分,其包含一种或多种能够形成第二相纳米颗粒的金属化合物,单独或与前体溶液的一种或多种前体组分或包含一种或多种金属化合物的掺杂剂组分组合 代替稀土/碱土金属/过渡金属氧化物的元素,并处理前体膜以形成包括稀土,碱土金属,过渡金属和添加金属的中间体金属氟氧化物 或前体溶液的掺杂剂金属。