TY - JOUR
T1 - Effect of co-substitution on superconductivity in (Y, Ca)(Ba, Sr)2Cu4O8prepared by the molten KOH method
AU - Imigi, A.
AU - Kawamata, T.
AU - Noji, T.
AU - Kato, M.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2021/7/30
Y1 - 2021/7/30
N2 - Effect of co-substitution of Ca and Sr in the Y-124 phase of Y1-x CaxBa2-y Sr y Cu4O8 has been investigated. Polycrystalline samples of Y1-x CaxBa2-y Sr y Cu4O8 with 0 ≤ x(Ca) ≤ 0.2 and 0 ≤ y(Sr) ≤ 0.2 have been prepared by the molten KOH method. The lattice parameters decrease with increasing y(Sr), indicating that the smaller Sr ions are systematically substituted for the larger Ba ions. The value of Tc increases from 83 K to ∼ 90 K through the Sr-substitution for x(Ca) = 0, while Tc ∼ 90 K are almost independent of y(Sr) for x(Ca) = 0.1 and 0.2.
AB - Effect of co-substitution of Ca and Sr in the Y-124 phase of Y1-x CaxBa2-y Sr y Cu4O8 has been investigated. Polycrystalline samples of Y1-x CaxBa2-y Sr y Cu4O8 with 0 ≤ x(Ca) ≤ 0.2 and 0 ≤ y(Sr) ≤ 0.2 have been prepared by the molten KOH method. The lattice parameters decrease with increasing y(Sr), indicating that the smaller Sr ions are systematically substituted for the larger Ba ions. The value of Tc increases from 83 K to ∼ 90 K through the Sr-substitution for x(Ca) = 0, while Tc ∼ 90 K are almost independent of y(Sr) for x(Ca) = 0.1 and 0.2.
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U2 - 10.1088/1742-6596/1975/1/012006
DO - 10.1088/1742-6596/1975/1/012006
M3 - Conference article
AN - SCOPUS:85112447824
SN - 1742-6588
VL - 1975
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012006
T2 - 33rd International Symposium on Superconductivity, ISS 2020
Y2 - 1 December 2020 through 3 December 2020
ER -