Interrelation Between Structural and Electrical Properties in RuSr2GdCu2O8 +/- Z Prepared Under Different Annealing Conditions
Por:
Garcia-Vazquez, Valentin, Abatal, Mohamed, Oubrame, Outmane, Alfonzo, Ismeli, Alazki, Hussain, Flores-Flores, Jose O., Quiroz, Adolfo, Flores-Garcia, Jose C., Gonzalez, Gonzalo
Publicada:
1 jun 2017
Resumen:
The effect of annealing in flowing oxygen on the structural and
electrical properties of the rutheno-cuprate RuSr2GdCu2O8 +/- z
(Ru-1212) was investigated. The solid-state reaction method was used to
synthesize the Ru-1212 compound at ambient pressure using temperatures
between 960 and 1000 degrees C in air. Pure-phase samples were obtained
and then annealed in flowing oxygen at 1060 degrees C for 0, 48, 72, or
168 hrs. The structural data of each sample were refined by the Rietveld
method. Cell parameters, a and c, as well as the Cu-O(1) interatomic
distances increase as the annealing time in flowing oxygen increases.
The temperature-dependent electrical resistance of the sample that was
not annealed in flowing oxygen shows semiconducting behavior. In
contrast, samples annealed in flowing oxygen show superconducting
transitions. All these results indicate that the structural and
electrical properties of the Ru-1212 compound are related.
Filiaciones:
Garcia-Vazquez, Valentin:
Benemerita Univ Autonoma Puebla, Inst Fis Luis Rivera Terrazas, Puebla 72570, Mexico
Abatal, Mohamed:
Univ Autonoma Carmen, Fac Ingn, Ciudad Del Carmen 24180, Mexico
Oubrame, Outmane:
Univ Autonoma Estado Morelos, Fac Ciencias Quim & Ingn, Cuernavaca 62209, Morelos, Mexico
Alfonzo, Ismeli:
Univ Nacl Autonoma Mexico, Inst Invest Mat, Unidad Morelia, Morelia 58190, Michoacan, Mexico
Alazki, Hussain:
Univ Autonoma Carmen, Fac Ingn, Ciudad Del Carmen 24180, Mexico
Flores-Flores, Jose O.:
Univ Nacl Autonoma Mexico, Ctr Ciencias Aplicadas & Desarrollo Tecnol, Mexico City 04510, DF, Mexico
Quiroz, Adolfo:
Univ Autonoma Carmen, Fac Ingn, Ciudad Del Carmen 24180, Mexico
Flores-Garcia, Jose C.:
Benemerita Univ Autonoma Puebla, Fac Ciencias Elect, Puebla 72570, Mexico
Gonzalez, Gonzalo:
Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
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