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Search: WFRF:(Han Shunhui)

  • Result 1-5 of 5
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1.
  • Han, Shunhui, et al. (author)
  • Fluctuation conductivity at high temperatures in polycrystalline Hg, Tl-1223 - Is there ID fluctuation behavior?
  • 2004
  • In: Physica. C, Superconductivity. - : Elsevier BV. - 0921-4534 .- 1873-2143. ; 408, s. 679-680
  • Journal article (peer-reviewed)abstract
    • Detailed resistivity measurements were made for polycrystalline Hg1-xTlxBa2Ca2Cu3O8+delta (x = 0.2) in zero field and in the temperature region from zero resistance up to 300 K. The fluctuation conductivity Deltasigma was analyzed as a function of is an element of equivalent to In(T/Tc-mf) in the range -5.5 < Inc < -0.5. 1D behavior Of fluctuation conductivity was found at high temperatures (above the 2D regime) with a crossover temperature T-1*, above which the critical exponent was found to be -1.5.
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2.
  • Han, Shunhui, et al. (author)
  • Study of the upper critical magnetic field HC2 of YBA2CU3O7-DELTA compounds
  • 1992
  • In: Solid State Communications. - 0038-1098 .- 1879-2766. ; 82:5, s. 379-380
  • Journal article (peer-reviewed)abstract
    • Careful resistive measurements of the upper critical field H(c2) have been made on high quality polycrystalline YBa2Cu3O7-delta samples in magnetic fields up to 12 T. The data have been fitted on the form H(c2) infinity (T(c)-T)alpha to compare with theoretical models. A cusp is found in the H(c2) (T) curve for both of the samples. Different exponents-alpha are obtained depending on the temperature range used in the fitting procedure.
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3.
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4.
  • Han, Shunhui, et al. (author)
  • The upper critical-field of pb doped BI-SR-CA-CU-O compounds
  • 1991
  • In: Physica scripta. T. - : IOP Publishing. - 0281-1847 .- 0031-8949 .- 1402-4896. ; 44:11, s. 69-70
  • Journal article (peer-reviewed)abstract
    • The upper critical field H(c2) of four Bi-(Pb)-Sr-Ca-Cu-O superconductors with the 110 K phase has been measured as a function of temperature. H(c2) exhibited a (T(c) - T)alpha-temperature dependence with alpha > 1 f two impure samples, but showed a linear temperature dependence for the purest sample, which is not expected according to current theories and other experiments.
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5.
  • Han, Shunhui, et al. (author)
  • Thermodynamic fluctuation in doped BiSrCaCuO superconductors with 110K phase
  • 1994
  • In: Physica. B, Condensed matter. - : Elsevier BV. - 0921-4526 .- 1873-2135. ; 194-196, s. 1513-1514
  • Journal article (peer-reviewed)abstract
    • The resistivity has been carefully measured for four sintered samples of Pb and Pb/Sb doped Bi-Sr-Ca-Cu-O superconductors with the 110 K phase from zero resistance temperature up to 300 K. The thermodynamical fluctuation have been fitted on the form DELTAsigma is-proportional-to epsilon(x) (epsilon=(T-T(c))/T(c)) in the regions -4 < In epsilon < -2. By choosing T(c) in different ways, it is shown that consistent results only could be obtained when T(c) is defined according to the Lawrence-Doniach theory.
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  • Result 1-5 of 5
Type of publication
journal article (5)
Type of content
peer-reviewed (5)
Author/Editor
Han, Shunhui (5)
Andersson, Magnus (4)
Rapp, Östen (2)
Hegedüs, Zsolt (2)
Chen, Q. (1)
Nygren, Mats (1)
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Axnäs, Johan (1)
Zhao, B R (1)
Yan, Y.F. (1)
Wei, Y.N. (1)
He, Y.S. (1)
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University
Royal Institute of Technology (5)
Language
English (5)
Research subject (UKÄ/SCB)
Natural sciences (4)
Engineering and Technology (1)

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