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条状永磁体的组合形式及间距对单畴GdBCO超导体磁悬浮力的影响

马俊 杨万民

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条状永磁体的组合形式及间距对单畴GdBCO超导体磁悬浮力的影响

马俊, 杨万民

Effect of assembled bar magnet configuration on levitation force of single domain GdBCO bulk superconductor

Ma Jun, Yang Wan-Min
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  • 通过对由条状永磁体组成的组合磁体与单畴GdBCO超导体在零场冷情况下磁悬浮力的测量,研究了5种不同组态下组合磁体之间距离的变化对超导体磁悬浮力的影响.结果发现,当条状永磁体之间的距离D从0 mm增加到30 mm时,超导体的磁悬浮力大小与组合磁体排列形式有着密切关系(以Z=5 mm为例):1)对由3个条状永磁体组成的组合磁体,当中间磁体的磁极N向上、两侧磁体的磁极N均水平指向中间磁体时,超导体的磁悬浮力从22.8N减小到9.7N;当中间磁体的磁极N向上、两侧磁体的磁极N均向下时,
    By measuring the levitation forces between a single domain GdBCO bulk superconductor and assembled bar magnets(ABM) in different configurations at liquid nitrogen temperature, the effects of ABM configurations on the levitation force of single domain GdBCO bulk superconductor are investigated. The maximum levitation force is obtained at the same vertical gap distance Z=5 mm between the superconductor and the ABM for configurations with different lateral gap distance(D)between the magnets of the ABM. It is found that 1) for the ABM consisting of 3 bar magnet, the levitation force of the GdBCO bulk decreases from 22.8N to 9.7N with the D value increasing from 0 to 30 mm, when the magnetic pole N of the middle magnet is pointed upwards and the directions of magnetic pole N of two side magnets are pointed to the middle magnet in horizontal direction; the levitation force of the GdBCO bulk increases first from 9.2N to 13.9N and then decreases to10.4 N with D value increasing from 0 to 30mm, if the magnetic pole N of the middle magnet is pointed upwards and the directions of magnetic pole N of two side magnets are pointed downwards;2)for the ABM consisting of 2 bar magnets, the levitation force of the GdBCO bulk decreases from 11.2N to 1.2N with D value increasing from 0 to 30mm, when the directions of magnetic pole N of two side magnets are pointed upwards; the levitation force of the GdBCO bulk increases first from 6.0N to 6.8N and then decreases to 2.9N with D value increasing from 0 to 30mm, if the directions of magnetic pole N of two magnets are anti-parallel in horizontal direction; 3)for the ABM consisting of only 1 bar magnets, D≡0, and the levitation force of the GdBCO bulk is about 9.5N. The results indicate that the magnet configuration and its detailed parameters of ABM are very important for improving the levitation force of a superconductor and helpful for designing and application based on the superconducting magnetic levitation system.
    • 基金项目: 国家自然科学基金(批准号:50872079),国家高技术研究发展计划(863)(批准号:2007AA03Z241)和中央高校基本科研业务费专项资金(批准号:GK200901017)资助的课题.
    [1]

    John R H, Shaul H,Tomotake M 2005 Supercond Sci. Technol. 18 S1

    [2]

    Miyagawa Y, Kameno H, Takahata R 1999 IEEE Trans Appl. Supercond 9 996

    [3]

    Nuria D V, Alvaro S,Carles N 2008 Appl.Phys.Lett. 92 042505

    [4]

    Wang J S,Wang S Y 2002 Physica C 378-381 809

    [5]

    Sha J J, Yao Z W 2000 Acta Phys.Sin. 49 1356 ( in Chinese)[沙建军、姚仲文 2000 物理学报 49 1356]

    [6]

    Feng Y, Zhou L,Yang W M,Zhang C P 2000 Acta Phys.Sin. 49 146 ( in Chinese) [冯 勇、周 廉、杨万民、张翠萍 2000 物理学报 49 146]

    [7]

    Yang W M,Zhou L,Feng Y 1999 Acta Phys.Sin. 48 0533 (in Chinese)[杨万民 1999 物理学报 48 533]

    [8]

    Zhu M,Ren Zh Y,Wang S Y 2002 Chinese Journal of Low Temperature Physics 24 213(in Chinese) 玉 2002 低温物理学报 24 213]

    [9]

    Carles N,Alvaro S 2001 Phys.Rev.B 64 214507

    [10]

    Zhang F Y,Huang S L,Cao X W 1989 Acta Phys.Sin. 39 830 ( in Chinese)[张凤英、黄孙利、曹效文 1989 物理学报 39 830]

    [11]

    Alvaro S,Carles N 2001 Phys.Rev.B 64 214506

    [12]

    Nuria D V, Alvaro S,Enric P 2007 Appl. Phys.Lett. 90 042503

    [13]

    Yang W M,Zhou L,Feng Y 2001 Physica C 354 5

    [14]

    Ma J, Yang W M, Li G Z, Cheng X F, Guo X D 2011 Acta Phys.Sin. 60 027401 (in Chinese) [马 俊、杨万民、李国政、程晓芳、郭晓丹 2011 物理学报 60 027401]

    [15]

    Li G Z,Yang W M 2010 Acta Phys.Sin. 59 5028 (in Chinese) [李国政、杨万民 2010 物理学报 59 5028]

    [16]

    Yang W M, Chao X X, Shu Z B 2006 Physica C 445-448 347

  • [1]

    John R H, Shaul H,Tomotake M 2005 Supercond Sci. Technol. 18 S1

    [2]

    Miyagawa Y, Kameno H, Takahata R 1999 IEEE Trans Appl. Supercond 9 996

    [3]

    Nuria D V, Alvaro S,Carles N 2008 Appl.Phys.Lett. 92 042505

    [4]

    Wang J S,Wang S Y 2002 Physica C 378-381 809

    [5]

    Sha J J, Yao Z W 2000 Acta Phys.Sin. 49 1356 ( in Chinese)[沙建军、姚仲文 2000 物理学报 49 1356]

    [6]

    Feng Y, Zhou L,Yang W M,Zhang C P 2000 Acta Phys.Sin. 49 146 ( in Chinese) [冯 勇、周 廉、杨万民、张翠萍 2000 物理学报 49 146]

    [7]

    Yang W M,Zhou L,Feng Y 1999 Acta Phys.Sin. 48 0533 (in Chinese)[杨万民 1999 物理学报 48 533]

    [8]

    Zhu M,Ren Zh Y,Wang S Y 2002 Chinese Journal of Low Temperature Physics 24 213(in Chinese) 玉 2002 低温物理学报 24 213]

    [9]

    Carles N,Alvaro S 2001 Phys.Rev.B 64 214507

    [10]

    Zhang F Y,Huang S L,Cao X W 1989 Acta Phys.Sin. 39 830 ( in Chinese)[张凤英、黄孙利、曹效文 1989 物理学报 39 830]

    [11]

    Alvaro S,Carles N 2001 Phys.Rev.B 64 214506

    [12]

    Nuria D V, Alvaro S,Enric P 2007 Appl. Phys.Lett. 90 042503

    [13]

    Yang W M,Zhou L,Feng Y 2001 Physica C 354 5

    [14]

    Ma J, Yang W M, Li G Z, Cheng X F, Guo X D 2011 Acta Phys.Sin. 60 027401 (in Chinese) [马 俊、杨万民、李国政、程晓芳、郭晓丹 2011 物理学报 60 027401]

    [15]

    Li G Z,Yang W M 2010 Acta Phys.Sin. 59 5028 (in Chinese) [李国政、杨万民 2010 物理学报 59 5028]

    [16]

    Yang W M, Chao X X, Shu Z B 2006 Physica C 445-448 347

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出版历程
  • 刊出日期:  2011-07-15

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