The Study of Spin Gap Effect of the R(La、Nd、Eu)-Ba-Cu-O System
碩士 === 淡江大學 === 物理學系 === 87 === Abstract: The bulk system of （La、Nd、Eu）1+xBa2-xCu3O7-δ（x=0~0.4） was studied.The relations between the oxygen concentration and the superconducting temperature Tc of the samples were investgated.X-ray d...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
1999
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| Online Access: | http://ndltd.ncl.edu.tw/handle/09832607702097773932 |
| Summary: | 碩士 === 淡江大學 === 物理學系 === 87 === Abstract:
The bulk system of （La、Nd、Eu）1+xBa2-xCu3O7-δ（x=0~0.4）
was studied.The relations between the oxygen concentration
and the superconducting temperature Tc of the samples were
investgated.X-ray diffraction analysis was used for
determining the phase of the samples. EDAX was employed for
monitorizing of the chemical composition of the sample.
Weight measurement of the samples was carried out throughout
the study in order to calibrate the oxygen concentration of
the sample. It is found that the highest Tc was not for the
fully oxygen-saturated sample. And annealing under Ar
atomosphere was not the proper process for reducing the
oxygen concentration of sample.
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