| Measurement of Magnetization Curve and Magnetic Relaxation for 2H-NbSe2 Crystals |
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| 引用本文： | ZhangNing LiuHai-lin YuZhu-xing XiongRui ShiJing. Measurement of Magnetization Curve and Magnetic Relaxation for 2H-NbSe2 Crystals[J]. 武汉大学学报:自然科学英文版, 2004, 9(1): 55-58. DOI: 10.1007/BF02912718 |
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| 作者姓名： | ZhangNing LiuHai-lin YuZhu-xing XiongRui ShiJing |
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| 作者单位： | [1]SchoolofPhysicsandTechnology,WuhanUniversity,Wuhan430072,Hubei,China [2]InternationalCenterforMaterialPhysics,CAS,Shenyang110016,Liaonin,China |
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| 基金项目： | SupportedbytheNationalNaturalScienceFoundationofChina (1 0 1 740 56) |
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| 摘 要： | The characteristics of electronic transport properties: behaviors of magnetization curve and magnetic relaxation of a typical normal superconductor 2H-NbSe2 are investigated. The results show that Tc and △Tc of the samples are 7. 2,0. 18 K, indicating that superconducting energy gap at zero temperature is 1. 1 meV. No fish tail shape is found in the magnetization curves at several temperatures. The relationship between remnant magnetic moment and time reveals that the magnetic flux creep of the sample agrees with the Kim-Anderson thermal activation model with the relaxation rate S=0.000 36 at T=6 K.
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| 关 键 词： | 磁化曲线 磁性弛豫 2H-NbSe2晶体 超导体 |
Measurement of magnetization curve and magnetic relaxation for 2H−NbSe2 crystals |
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| Zhang Ning,Liu Hai-lin,Yu Zhu-xing,Xiong Rui,Shi Jing. Measurement of magnetization curve and magnetic relaxation for 2H−NbSe2 crystals[J]. Wuhan University Journal of Natural Sciences, 2004, 9(1): 55-58. DOI: 10.1007/BF02912718 |
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| Authors: | Zhang Ning Liu Hai-lin Yu Zhu-xing Xiong Rui Shi Jing |
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| Affiliation: | (1) School of Physics and Technology, Wuhan University, 430072 Wuhan, Hubei, China;(2) International Center for Material Physics, CAS, 110016 Shenyang Liaonin, China |
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| Abstract: | The characteristics of electronic transport properties: behaviors of magnetization curve and magnetic relaxation of a typical normal superconductor 2H−NbSe2 are investigated. The results show thatT c and ΔT c of the samples are 7. 2, 0. 18 K, indicating that superconducting energy gap at zero temperature is 1. 1. meV. No fish tail shape is found in the magnetization curves at several temperatures. The relationship between remnant magnetic moment and time reveals that the magnetic flux creep of the sample agrees with the Kim-Anderson thermal activation model with the relaxation rateS=0.00036 atT=6 K. Foundation item: Supported by the National Natural Science Foundation of China (10174056) Biography: Zhang Ning (1978-), male, Master candidate, reseach direction: high temperature superconductor. |
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| Keywords: | magnetization curve magnetic relaxation flux pinning |
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