TY - JOUR
T1 - The effect of substituting potassium for barium on the superconductivity of RBa2Cu3O7 (R=Y and Eu)
AU - Felner, I.
AU - Kowitt, M.
AU - Lehavi, Y.
AU - Ben-dor, L.
AU - Wolfus, Y.
AU - Barbara, B.
AU - Nowik, I.
PY - 1988
Y1 - 1988
N2 - We have studied the crystal structure and magnetic susceptibility of high Tc single phase RBa2-xKxCu3O7-δ, where x=0 to 1 and R=Y, Eu. All the YBa2-xKxCu3O7-δ samples have the same orthorhombic crystal structure and are superconducting with almost the same Tc. In EuBa2-xKxCu3O7 the crystal structure changes from orthorhombic to tetragonal and a progressive decrease in Tc is observed when x is increased. EuBaKCu3O7-δ is not superconducting. The decrease in the cation charge reduces both the oxygen concentration and the average valency of the copper.
AB - We have studied the crystal structure and magnetic susceptibility of high Tc single phase RBa2-xKxCu3O7-δ, where x=0 to 1 and R=Y, Eu. All the YBa2-xKxCu3O7-δ samples have the same orthorhombic crystal structure and are superconducting with almost the same Tc. In EuBa2-xKxCu3O7 the crystal structure changes from orthorhombic to tetragonal and a progressive decrease in Tc is observed when x is increased. EuBaKCu3O7-δ is not superconducting. The decrease in the cation charge reduces both the oxygen concentration and the average valency of the copper.
UR - http://www.scopus.com/inward/record.url?scp=0024017949&partnerID=8YFLogxK
U2 - 10.1016/s0921-4534(88)80144-8
DO - 10.1016/s0921-4534(88)80144-8
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AN - SCOPUS:0024017949
SN - 0921-4534
VL - 153-155
SP - 898
EP - 899
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - PART 2
ER -