In:
Acta Physica Sinica, Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences, Vol. 32, No. 4 ( 1983), p. 446-
Abstract:
The effect of heat treatment on the microstructure and superconducting properties of the alloy Al-8.3 at% Si-8.5 at% Ge prepared by the splat quenching technique has been studied. The results of structure analyses indicate that the rapidly cooled alloy consists of two phases: a supersaturated α-Al (Si, Ge) solid solution (matrix) and amorphous Al-Si-Ge spheres, these spheres connect with each other and form a continuous canal. After annealing at 100℃ for 50 h., the spheres decrease in size and the continuous canal disappear and some dispersive Si (Ge) granules separate out from the amorphous phase. Two superconducting-normal transitions have been found in the resistance-temperature and resistance-magnetic feild curves of the sample after annealing at 100℃ for 50 h. These results can be interpreted by the existence of two superconducting phases in this sample.
Type of Medium:
Online Resource
ISSN:
1000-3290
,
1000-3290
Language:
Unknown
Publisher:
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Publication Date:
1983
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