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    Magnetic field replicator and method
    1.
    发明授权
    Magnetic field replicator and method 失效
    磁场复制器及方法

    公开(公告)号：US07667562B1

    公开(公告)日：2010-02-23

    申请号：US07481576

    申请日：1990-02-20

    Applicant: Roy Weinstein

    Inventor： Roy Weinstein

    IPC: H01F7/00 ,  H01F1/00 ,  H01F6/00

    CPC classification number: H01L39/143 ,  H01F6/00 ,  H01L39/126 ,  H01L39/2483 ,  Y10S505/776 ,  Y10S505/777 ,  Y10S505/778 ,  Y10S505/779 ,  Y10S505/78 ,  Y10S505/781 ,  Y10S505/803 ,  Y10S505/879 ,  Y10S505/924 ,  Y10T29/49933

    Abstract: A new class of fundamental devices and methods for their manufacture and use. The bulk magnetic field replicators of the present invention require no precision machining or alignment to accurately reproduce magnetic fields of any complexity, nor extreme positional stability to maintain superconductivity. Such bulk devices may be formed of either low or high critical temperature superconductive materials, but are particularly adapted to formation from high critical temperature materials.

    Abstract translation: 一类新的基本设备和方法，用于制造和使用。 本发明的体磁场复制器不需要精密加工或对准来精确地再现任何复杂的磁场，也不需要极端的位置稳定性来保持超导性。 这种散装装置可以由低或高临界温度的超导材料形成，但是特别适合于由高临界温度材料形成。

    High critical temperature superconductors in the system La3-ZMezBa3Ca1−vNcvCu7O16+x where Me=a rare earth or alkaline metal ion and Nc is a Mg, Cd ion
    2.
    发明授权
    High critical temperature superconductors in the system La3-ZMezBa3Ca1−vNcvCu7O16+x where Me=a rare earth or alkaline metal ion and Nc is a Mg, Cd ion 失效
    系统中的高临界温度超导体La3-ZMezBa3Ca1-vNcvCu7O16 + x其中Me =稀土或碱金属离子，Nc是Mg，Cd离子

    公开(公告)号：US06275716B1

    公开(公告)日：2001-08-14

    申请号：US09363490

    申请日：1999-07-29

    Applicant: Arthur Tauber ,  Steven C. Tidrow

    Inventor： Arthur Tauber ,  Steven C. Tidrow

    IPC: H01L3912

    CPC classification number: C04B35/4504 ,  H01L39/126 ,  H01L39/225 ,  H01Q1/364 ,  Y10S505/778

    Abstract: Compounds of the of the general formula La3−zMezBa3Ca1−vNcvCu7O16+x, wherein Me can be a rare earth metal or an alkaline metal ion selected from the group consisting of yttrium (Y), ytterbium (Yb), sodium (Na) and Nc can be a 2+ ion selected from the group consisting of magnesium (Mg) and cadmium (Cd) have been prepared as the HTSC in thin film superconductors. These compounds can be used as thin film high critical superconductors in thin film high critical temperature superconducting structures and antennas and in multilayered structures and devices such as Josephson junctions, broadband impedance transformers and both flux flow and field effect transistors TABLE 1 Properties of La3-zMezBa3Ca1-vCu7O16+x Compounds. Lattice Parameter (Å) Onset Compound c &agr; Tc (K.) La3Ba3CaCu7O16+x 11.650 3.865 72  11.680*  80* La3Ba3CaCu7O16+x/LSAT 11.665 La3Ba3CaCu7O16+x/GGG 11.540 La3Ba3CaCu7O16+x/LaAlO3 11.660 35 La2YBa3CaCu7O16+x 11.580 3.850 72 LaY2Ba3CaCu7O16+x 11.630 3.868 74 LaY2Ba3CaCu7O16+x/LSAT 11.703 Nd3Ba3CaCu7O16+x 11.614 3.874 42 Nd3Ba3CaCu7O16+x/LSAT 40 La2YbBa3CaCu7O16+x 11.530 3.843 74 La2YbBa3CaCu7O16+x/LSAT 11.628 45 La2YbBa3CaCu7O16+x/LaAlO3 11.630 La2YbBa3CaCu7O16+x/GGG 11.683 La2.5Na.5Ba3CaCu7O16+x 11.630 3.870 68 La2.5Na.5Ba3CaCu7O16+x/LaAlO3 11.662 65 La2.5Na.5Ba3CaCu7O16+x/GGG 11.664 La3Ba3Ca.5Cd.5Cu7O16+x 11.661 3.881 55 La3Ba3Ca.5Cd.5Cu7O16+x/LSAT 11.720 La3Ba3Ca.5Cd.5Cu7O16+x/LaAlO3 11.265 70 La3Ba3Ca.5Cd.5Cu7O16+x/GGG 11.730 La3Ba3Ca.5Mg.5Cu7O16+x 11.661 3.890 35 La3Ba3Ca.5Mg.5Cu7O16+x/LaAlO3 11.650 La3Ba3Ca.5Mg.5Cu7O16+x/GGG 11.692 &Dgr;Tc Observed Compound (K.) Reflections La3Ba3CaCu7O16+x 4 La3Ba3CaCu7O16+x/LSAT 003, 005, 006, 007, 0012 La3Ba3CaCu7O16+x/GGG 003, 005, 006, 007, 009 La3Ba3CaCu7O16+x/LaAlO3 15 003, 004, 005, 006, 007, 009, 0011, 0012 La2YBa3CaCu7O16+x 3 LaY2Ba3CaCu7O16+x 6 LaY2Ba3CaCu7O16+x/LSAT 002, 005, 006, 007 Nd3Ba3CaCu7O16+x Nd3Ba3CaCu7O16+x/LSAT 20 La2YbBa3CaCu7O16+x 5 La2YbBa3CaCu7O16+x/LSAT >20 003, 005, 006, 007, 009, 0010, 0011 La2YbBa3CaCu7O16+x/LaAlO3 003, 005, 006, 007, 008, 009, 0010, 0011 La2YbBa3CaCu7O16+x/GGG 003, 005, 006, 007 La2.5Na.5Ba3CaCu7O16+x 18 [multiphase] La2.5Na.5Ba3CaCu7O16+x/LaAlO3 >40 003, 005, 006, 007 La2.5Na.5Ba3CaCu7O16+x/GGG 006, 009 La3Ba3Ca.5Cd.5Cu7O16+x La3Ba3Ca.5Cd.5Cu7O16+x/LSAT 003, 006 La3Ba3Ca.5Cd.5Cu7O16+x/LaAlO3 >45 003, 006 La3Ba3Ca.5Cd.5Cu7O16+x/GGG La3Ba3Ca.5Mg.5Cu7O16+x 15 La3Ba3Ca.5Mg.5Cu7O16+x/LaAlO3 003, 005, 006, 007, 009, 0010, 0011 La3Ba3Ca.5Mg.5Cu7O16+x/GGG 003, 005, 006, 007, 0011 *S. Engelsberg, Physica C, 176, 451 (1991)

    Abstract translation: 通式La3-zMezBa3Ca1-vNcvCu7O16 + x的化合物，其中Me可以是选自钇（Y），镱（Yb），钠（Na）和Nc的稀土金属或碱金属离子 可以选自镁（Mg）和镉（Cd）中的2+离子作为HTSC在薄膜超导体中制备。 这些化合物可用作薄膜高临界温度超导结构和天线中的薄膜高临界超导体，以及多层结构和器件，如约瑟夫逊结，宽带阻抗变压器和通量流场效应晶体管

    Process of preparing superconductive oxide complexes containing L, Ba, Cu and O and method of using the same
    4.
    发明授权
    Process of preparing superconductive oxide complexes containing L, Ba, Cu and O and method of using the same 失效
    制备含有L，Ba，Cu和O的超导氧化物络合物的方法及其使用方法

    公开(公告)号：US5462917A

    公开(公告)日：1995-10-31

    申请号：US194941

    申请日：1994-02-14

    Applicant: Kamel Salama ,  Venkatakrishnan Selvamanickam

    Inventor： Kamel Salama ,  Venkatakrishnan Selvamanickam

    IPC: C04B35/45 ,  C04B35/653 ,  H01L39/24 ,  H01L39/12 ,  C01F11/02 ,  H01B12/16

    CPC classification number: H01L39/2419 ,  C04B35/4508 ,  C04B35/653 ,  Y10S505/742 ,  Y10S505/778 ,  Y10S505/779 ,  Y10S505/78 ,  Y10S505/785

    Abstract: A superconductor material having a current density, J, of from about 30,000 to about 85,000 amps/cm.sup.2 at zero magnetic field and 77.degree. K is disclosed. The 123 superconductor, of the formula L.sub.1 Ba.sub.2 Cu.sub.3 O.sub.6 +.delta. wherein L is preferably yttrium, is capable of entrapping sufficiently high magnetic fields and exhibits a low microwave surface resistance. The process of preparing the superconductor comprises compacting the bulk product, L.sub.1 Ba.sub.2 Cu.sub.3 O, and then sintering the reaction product at a temperature between about 40.degree. C. to about 90.degree. C. below its melting point, i.e., for Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.6 +.delta. at a temperature of approximately 940.degree. C. The composition is then heated in a preheated chamber maintained at approximately 1090.degree. C. to about 1,200.degree. C. (approximately 1,100.degree. C. for Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.6 +.delta.) until it has been decomposed, and is then rapidly cooled to a temperature between about 10.degree. C. to about 30.degree. C. above its melting point, i.e. for Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub. 6 +.delta. a temperature of 1030.degree. C., and then is controlled cooled at a rate of 1.degree. C./hr until it reaches a temperature of about 20.degree. C. to about 40.degree. C. below its melting point, i.e., for Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.6 +.delta. a temperature of 980.degree. C. The composition is steadily held at this temperature for at least eight hours, and then cooled to a temperature of approximately 400.degree. C. below its melting point (for Y.sub.1 Ba.sub.2 Cu.sub.3 O.sub.6 +.delta. approximately a temperature of 600.degree. C.). The material is then slowly cooled by another 200.degree. C. and is then annealed in oxygen.

    Abstract translation: 公开了在零磁场和77°K下具有约30,000至约85,000安培/ cm 2的电流密度J的超导体材料。 其中L优选为钇的式L1Ba2Cu3O6 +δ的123超导体能够捕获足够高的磁场并表现出低的微波表面电阻。 制备超导体的过程包括压制大块产品L1Ba2Cu3O，然后在低于其熔点的约40℃至约90℃之间的温度下烧结反应产物，即在大约温度下对于Y1Ba2Cu3O6 +δ 然后将组合物在保持在约1090℃至约1200℃（对于Y1Ba2Cu3O6 +δ1约为1100℃）的预热室中加热直到其被分解，然后迅速冷却至温度 在其熔点之上约10℃至约30℃，即对于Y1Ba2Cu3O6 +δ，温度为1030℃，然后以1℃/小时的速率控制冷却至达到 温度低于其熔点约20℃至约40℃，即对于Y1Ba2Cu3O6 +δ，温度为980℃。将该组合物在该温度下稳定保持至少8小时，然后冷却至温度 约400 DE 低于其熔点（对于Y1Ba2Cu3O6 +δ约为600℃的温度）。 然后将材料缓慢冷却另外200℃，然后在氧气中退火。

    La123 superconductor materials
    6.
    发明授权
    La123 superconductor materials 失效
    La123超导材料

    公开(公告)号：US5049542A

    公开(公告)日：1991-09-17

    申请号：US374969

    申请日：1989-06-30

    Applicant: Stephen G. Brass ,  Mohammad H. Ghandehari

    Inventor： Stephen G. Brass ,  Mohammad H. Ghandehari

    IPC: H01L39/24

    CPC classification number: H01L39/2419 ,  Y10S505/742 ,  Y10S505/778

    Abstract: Orthorhombic perovskitic metal-oxide superconductors of the lanthanum-barium-copper type (LaBa.sub.2 Cu.sub.3 O.sub.y) wherein Y ranges from 6.8 to 7.0, and T(R=0) is at least about 90.degree. K., can be prepared by sintering and annealing a substantially stoichiometric calcined mixture of one or more sources lanthanum, barium and copper under conditions wherein the time and temperature of exposure to oxygen during the sintering and annealing operations is controlled.

    Abstract translation: 镧钡 - 铜型（LaBa2Cu3Oy）的正交钙钛矿型金属氧化物超导体，其中Y为6.8-7.0，T（R = 0）为至少约90°K）可以通过烧结和退火基本上 在烧结和退火操作期间暴露于氧的时间和温度被控制的条件下，一种或多种来源镧，钡和铜的化学计量的煅烧混合物。

    Superconductor and method of producing same
    7.
    发明授权
    Superconductor and method of producing same 失效
    超导体及其制造方法

    公开(公告)号：US5849667A

    公开(公告)日：1998-12-15

    申请号：US683915

    申请日：1996-07-19

    Applicant: Masato Murakami ,  Sang-Im Yoo ,  Naomichi Sakai ,  Hiroshi Takaichi ,  Takamitsu Higuchi ,  Shoji Tanaka

    Inventor： Masato Murakami ,  Sang-Im Yoo ,  Naomichi Sakai ,  Hiroshi Takaichi ,  Takamitsu Higuchi ,  Shoji Tanaka

    IPC: H01L39/12 ,  H01B12/00 ,  C04B35/50

    CPC classification number: H01L39/126 ,  Y10S505/742 ,  Y10S505/778 ,  Y10S505/779 ,  Y10S505/785

    Abstract: A high critical temperature and high critical current density superconductor is disclosed which contains a metal oxide expressed by the following formula (I): (R.sup.1.sub.1-x, Ba.sub.x)Ba.sub.2 Cu.sub.3 O.sub.d (I) wherein R.sup.1 stands for at least one element selected from the group consisting of La, Nd, Sm, Eu and Gd, x is a number greater than 0 but not greater than 0.5 and d is a number between 6.2 and 7.2. Fine phases of RE211, RE422 and/or a metal oxide expressed by the formula (R.sup.2.sub.1-z, Ba.sub.z) (Ba.sub.1-y, R.sup.2.sub.y).sub.2 Cu.sub.3 O.sub.p (R.sup.2 =La, Nd, Sm, Eu or Gd) may be dispersed in a matrix of the matrix phase of the formula (I). The above superconductor may be obtained by cooling a melt having a temperature of 1,000.degree.-1,300.degree. C. and containing R.sup.1, Ba, Cu and O at a cooling rate of 5.degree. C./hour or less under a partial pressure of oxygen of between 0.00001 and 0.05 atm, followed by annealing at 250.degree.-600.degree. C. in an oxygen atmosphere.

    Abstract translation: 公开了一种高临界温度和高临界电流密度超导体，其包含由下式（I）表示的金属氧化物:( R11-x，Bax）Ba2Cu3Od（I）其中R1表示选自以下的至少一种元素： 的La，Nd，Sm，Eu和Gd，x是大于0但不大于0.5的数，d是6.2和7.2之间的数。 RE211，RE422和/或由式（R21-z，Baz）（Ba1-y，R2y）2Cu3Op（R2 = La，Nd，Sm，Eu或Gd）表示的金属氧化物的细相可以分散在基质 的式（I）的基质相。 上述超导体可以通过在5℃/小时以下的冷却速度下，在温度为1000〜-1300℃的温度下冷却含有R 1，Ba，Cu和O的熔体， 在0.00001和0.05atm之间，然后在氧气氛中在250-600℃退火。

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