Search for new superconductors by the Li-intercalation into layered perovskites
Search for new superconductors by the Li-intercalation into layered perovskites
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DOI：
10.1016/j.physc.2006.03.070
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发表时间：
2006-10-01
影响因子：
1.7
通讯作者：
Koike, Y.
中科院分区：
文献类型：
--
作者：
Kato, M.;Kajita, T.;Koike, Y.
本文综述了新型锂插层钙钛矿Li（x）Sr（2）CuO（2）X（2）（X = Cl，Br，I）和Li（x）AB（2）M（3）O（10）（A = K，Rb，Cs; B = Ca，Sr，Ba; M = Nb，Ta）的合成和超导电性。采用电化学方法进行了嵌锂反应。首先，层状铜酸盐Li（x）Sr（2）CuO（2）X（2）表现出超导电性，当X = Br和I时，T（c）分别为8.0 K和4.5 K。然而，没有超导电性出现X = Cl。接下来，我们成功地制备了新的超导体Li（x）CsSr（2）Nb（3）O（10）（T（c）= 5.5 K）和Li（x）RbSr（2）Nb（3）O（10）（T（c）= 6 K）。但在Li（x）CsSr（2）Ta（3）O（10）的层状钽酸盐中，没有观察到超导电性。(c)2006 Elsevier B. V.保留所有权利。
Synthesis and superconductivity of new Li-intercalated layered perovskites, Li(x)Sr(2)CuO(2)X(2) (X = Cl, Br, I) and Li(x)AB(2)M(3)O(10) (A = K, Rb, Cs; B = Ca, Sr, Ba; M = Nb, Ta), are reviewed. Li-intercalation has been carried out by the electrochemical technique. First, layered cuprates Li(x)Sr(2)CuO(2)X(2) show superconductivity with T(c) = 8.0 K and 4.5 K for X = Br and I, respectively. However, no superconductivity appears for X = Cl. Next, we have succeeded in preparing new superconductors, Li(x)CsSr(2)Nb(3)O(10) with T(c) = 5.5 K and Li(x)RbSr(2)Nb(3)O(10) with T(c) = 6 K. In the layered tantalates of Li(x)CsSr(2)Ta(3)O(10), however, no. superconductivity has been observed. (c) 2006 Elsevier B.V. All rights reserved.