Thermal properties of the magnetic RuSr2GdCu2O8 superconductor

被引：1
作者：
Costa, GA
Ubaldini, A
Artini, C
Carnasciali, MM
Masini, R
机构：
[1] Univ Genoa, INFM, LAMIA, I-16146 Genoa, Italy
[2] Univ Genoa, DCCI, I-16146 Genoa, Italy
[3] Univ Genoa, INSTM, I-16146 Genoa, Italy
[4] CNR, IMEM, Sez Genova, I-16146 Genoa, Italy
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2005年 / 80卷 / 03期
关键词：
DTA-TG; EGA; phase stability; ruthenates; superconductivity;
D O I：
10.1007/s10973-005-0697-3
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A thermal study was performed on the RuSr2GdCu2O8 (Ru- 1212) magnetic superconductor phase to investigate the effect of the annealing treatments in flowing O-2 on the stability limit of the phase and on its structural, magnetic and transport properties. DTA-TG measurements were utilized to determine the decomposition process and the dependence of the decomposition temperature on the annealing atmosphere. The decomposition of the Ru-1212 phase was found sensitive to the oxygen partial pressure and increases with P-o2, and the annealing time. The annealing treatments exert a depressing effect on the strength of the magnetic interaction, an enhancement on the superconductive properties and the vanishing of the magnetostriction. A decomposition reaction of Ru- 1212 phase was proposed and discussed.
引用
收藏
页码：579 / 583
页数：5
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