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    • 8. 发明授权
    • Superconductor and method of producing same
    • 超导体及其制造方法
    • US5849667A
    • 1998-12-15
    • US683915
    • 1996-07-19
    • Masato MurakamiSang-Im YooNaomichi SakaiHiroshi TakaichiTakamitsu HiguchiShoji Tanaka
    • Masato MurakamiSang-Im YooNaomichi SakaiHiroshi TakaichiTakamitsu HiguchiShoji Tanaka
    • H01L39/12H01B12/00C04B35/50
    • H01L39/126Y10S505/742Y10S505/778Y10S505/779Y10S505/785
    • 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.
    • 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。
    • 10. 发明授权
    • Superconductor and method of producing same
    • 超导体及其制造方法
    • US5525584A
    • 1996-06-11
    • US452138
    • 1995-05-26
    • Masato MurakamiSang-Im YooNaomichi SakaiHiroshi TakaichiTakamitsu HiguchiShoji Tanaka
    • Masato MurakamiSang-Im YooNaomichi SakaiHiroshi TakaichiTakamitsu HiguchiShoji Tanaka
    • H01L39/12H01B12/00
    • H01L39/126Y10S505/742Y10S505/778Y10S505/779Y10S505/785
    • 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.
    • 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代表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。