TY - JOUR
T1 - Correlation between site preference, superconductivity and magnetism in Pb2Sr2Y1 - xCax(Cu1 - yMy)3O8 (M = Fe, Co, Ni, Zn, Ga)
AU - Koike, Yoji
AU - Kaiwa, Masahiro
AU - Kajitani, Tsuyoshi
AU - Kato, Masatsune
AU - Sunagawa, Hiromu
AU - Noji, Takashi
AU - Kobayashi, Norio
AU - Morii, Yukio
AU - Funahashi, Satoru
AU - Saito, Yoshitami
PY - 1993/6/20
Y1 - 1993/6/20
N2 - Site preference of the partially substituted 3d metal M and superconducting and magnetic properties have been investigated for Pb2Sr2Y1 - xCax(Cu1 - yMy)3O8 (M = Fe, Co, Ni, Zn, Ga). It has been found from powder neutron diffraction that Fe atoms preferentially occupy the Cu(1) site in the oxygen-free Cu layer, while Co, Ni, Zn and Ga atoms occupy the Cu(2) site in the CuO2 layer. From correlation between this site preference of M and the superconducting and magnetic properties, it has been concluded that the partial Cu(1)-site substitution shows little effect on the superconductivity and that there remains antiferromagnetic correlation between Cu2+ spins in the Cu(2) site in the normal state even for the high-Tc samples of x = 0.5 with Tc ≈ 80 K.
AB - Site preference of the partially substituted 3d metal M and superconducting and magnetic properties have been investigated for Pb2Sr2Y1 - xCax(Cu1 - yMy)3O8 (M = Fe, Co, Ni, Zn, Ga). It has been found from powder neutron diffraction that Fe atoms preferentially occupy the Cu(1) site in the oxygen-free Cu layer, while Co, Ni, Zn and Ga atoms occupy the Cu(2) site in the CuO2 layer. From correlation between this site preference of M and the superconducting and magnetic properties, it has been concluded that the partial Cu(1)-site substitution shows little effect on the superconductivity and that there remains antiferromagnetic correlation between Cu2+ spins in the Cu(2) site in the normal state even for the high-Tc samples of x = 0.5 with Tc ≈ 80 K.
UR - http://www.scopus.com/inward/record.url?scp=0027610516&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027610516&partnerID=8YFLogxK
U2 - 10.1016/0921-4534(93)90148-J
DO - 10.1016/0921-4534(93)90148-J
M3 - Article
AN - SCOPUS:0027610516
VL - 211
SP - 409
EP - 420
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 3-4
ER -