| 非晶态合金La72Si28晶化过程中生成的新亚稳超导相 |
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| 引用本文： | 秦志成,何寿安,刘振兴,王文魁.非晶态合金La72Si28晶化过程中生成的新亚稳超导相[J].物理学报,1986,35(5):577-582. |
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| 作者姓名： | 秦志成 何寿安 刘振兴 王文魁 |
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| 作者单位： | 中国科学院物理研究所 |
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| 摘 要： | 本文报道了在非晶态合金La72Si28晶化过程中生成新亚稳超导相的实验结果。非晶态合金La72Si28是用液态急冷法制备的,该合金经250℃,30min热处理后,得到了一个新的亚稳超导相,该相具有正交结构,其晶格参数为a=9.121?,b=6.821?,c=3.833?,超导临界温度Tc为3.02K,高于目前已知的La-Si系超导相的Tc值。
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| 收稿时间： | 7/3/1985 12:00:00 AM |
NEW METASTABLE SUPERCONDUCTING PHASE FORMED DURING PROCESS OF CRYSTALLIZATION IN La72Si28 AMORPHOUS ALLOY |
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| QIN ZHI-CHENG,HE SHOU-AN,LIU ZHEN-XING and WANG WENG-KUI.NEW METASTABLE SUPERCONDUCTING PHASE FORMED DURING PROCESS OF CRYSTALLIZATION IN La72Si28 AMORPHOUS ALLOY[J].Acta Physica Sinica,1986,35(5):577-582. |
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| Authors: | QIN ZHI-CHENG HE SHOU-AN LIU ZHEN-XING and WANG WENG-KUI |
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| Abstract: | In this paper, we report the synthesis of a new metastable superconducting phase formed during the process of the crystallization of amorphous La72Si28 alloy. As starting material, the La72Si28 amorphous ribbons were prepared from melt by rapid quenching method. The new metastable phase appeared when the amorphous sample was treated at 250℃ for 30 minutes. This phase has a ortborhombic structure with lattice parameters α=9.12l?, b=6.821? and c=3.833?, and exhibits superconducting transition at Tc =3.02 K which is higher than those of all the known La-Si phases.
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