TY - JOUR
T1 - Phase formation and superconductivity in [Y1 x Cax] SrBaCu 2.80 (BO3) 0.20Oy with 0.10 ≤ x ≤ 0.50
AU - Bustamante Domínguez, A. G.
AU - Barinotto C., V. H.
AU - Flores Santibañez, J.
AU - Garcia, F.
PY - 2000/12/1
Y1 - 2000/12/1
N2 - We report the phase formation and superconductivity in [Y1-xCax]SrBaCu2.80(BO3) 0.20Oy with 0.10≤ x ≤ 0.50 prepared at normal pressure and temperature. The X-ray diffraction pattern shows that all samples have a tetragonal P4/mmm structure, indicating that the BO3 groups were incorporated in the structure. The ZFC magnetization versus temperature measurements under an applied field of 10 Oe using a SQUID magnetometer, show that the materials are superconductors, with Tc ≈ 77K, almost independently of the Ca content. The observed differences are related to the volume fraction of Meissner effect. In the temperature range 100-300K all samples show a typical Curie - Weiss behavior, under an applied high field of 20 KOe. © 2000 Elsevier Science B.V. All rightsreserved.
AB - We report the phase formation and superconductivity in [Y1-xCax]SrBaCu2.80(BO3) 0.20Oy with 0.10≤ x ≤ 0.50 prepared at normal pressure and temperature. The X-ray diffraction pattern shows that all samples have a tetragonal P4/mmm structure, indicating that the BO3 groups were incorporated in the structure. The ZFC magnetization versus temperature measurements under an applied field of 10 Oe using a SQUID magnetometer, show that the materials are superconductors, with Tc ≈ 77K, almost independently of the Ca content. The observed differences are related to the volume fraction of Meissner effect. In the temperature range 100-300K all samples show a typical Curie - Weiss behavior, under an applied high field of 20 KOe. © 2000 Elsevier Science B.V. All rightsreserved.
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M3 - Article
SN - 0921-4534
SP - 635
EP - 636
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
ER -