TY - CONF
T1 - The irreversibility line and Curie-Weiss temperature of the superconductor LaCaBaCu3-X(BO3)Xwith x= 0.2 and 0.3
AU - De Los Santos Valladares, L.
AU - Bustamante Dominguez, A.
AU - Bellido Quispe, R.
AU - Flores Santibañez, W.
AU - Albino Aguiar, J.
AU - Barnes, C. H.W.
AU - Majima, Y.
PY - 2012/1/1
Y1 - 2012/1/1
N2 - © 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Guest Editors. LaCaBaCu3O7 is a high critical temperature superconductor (HTS) below the Tc = 80 K and its structure is similar to that of YBCO. In this work we study the effect in the irreversibility line and the Curie-Weiss temperature of this superconductor after borate (BO3)3- doping (LaCaBaCu3-x(BO3)xO7-δx=0.2 and 0.3). Interestingly, borate doping enhances the irreversibility line and this effect is probably caused from alteration the arrangement of the oxygen atoms in the crystalline structure. Moreover, the Curie-Weiss temperature (□p) in the normal state increases with doping concentration. Calculated □p for pure LaCaBaCu3O7 is around -98K, this value increases to -75 and 49 K for x=0.2 and 0.3 respectively and indicating transition from antiferromagnetic to ferromagnetic coupling between ions in the structure. This study provides additional data for the magnetic characteristics of doped like-123 crystalline structures with oxyanions.
AB - © 2011 Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Guest Editors. LaCaBaCu3O7 is a high critical temperature superconductor (HTS) below the Tc = 80 K and its structure is similar to that of YBCO. In this work we study the effect in the irreversibility line and the Curie-Weiss temperature of this superconductor after borate (BO3)3- doping (LaCaBaCu3-x(BO3)xO7-δx=0.2 and 0.3). Interestingly, borate doping enhances the irreversibility line and this effect is probably caused from alteration the arrangement of the oxygen atoms in the crystalline structure. Moreover, the Curie-Weiss temperature (□p) in the normal state increases with doping concentration. Calculated □p for pure LaCaBaCu3O7 is around -98K, this value increases to -75 and 49 K for x=0.2 and 0.3 respectively and indicating transition from antiferromagnetic to ferromagnetic coupling between ions in the structure. This study provides additional data for the magnetic characteristics of doped like-123 crystalline structures with oxyanions.
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U2 - 10.1016/j.phpro.2012.06.244
DO - 10.1016/j.phpro.2012.06.244
M3 - Paper
SP - 354
EP - 359
T2 - Physics Procedia
Y2 - 1 January 2012
ER -