1 Ocak 2017 Dergi makalesi Açık Erişim

Ozturk, Ali; Duzgun, Ibrahim; Celebi, Selahattin

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    "creators": [
      {
        "affiliation": "Karadeniz Tech Univ, Fac Sci & Arts, Dept Phys, TR-61080 Trabzon, Turkey", 
        "name": "Ozturk, Ali"
      }, 
      {
        "affiliation": "Gumushane Univ, Fac Engn & Nat Sci, Dept Phys Engn, TR-29100 Gumushane, Turkey", 
        "name": "Duzgun, Ibrahim"
      }, 
      {
        "affiliation": "Karadeniz Tech Univ, Fac Sci & Arts, Dept Phys, TR-61080 Trabzon, Turkey", 
        "name": "Celebi, Selahattin"
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    ], 
    "description": "Measurements of the ac susceptibility in a commercial Bi:2223/Ag tape for some different ac magnetic field amplitudes, H-ac, in the presence of bias magnetic field H-dc directed along H-ac are reported. It is found that the peak values of the imaginary component of ac susceptibility x\"(max) versus H-ac trace a valley for the orientation where applied field H-a perpendicular to wide face of the tape total. We note that the observation of the valley depends on various parameters such as field dependence parameter n in the critical current density, in the simple power law expression j(c)- alpha(T)/B-n, choice of the bias field H-dc together with selected ac field amplitudes H-ac, and dimension and geometry of sample studied. Our calculations based on critical state model with j(c) - alpha(1 - T/T-cm)(p)/B-n using the fitting parameters of n - 0.25, p- 2.2, T-cm- 108 K gives quite good results to compare the experimental and calculated curves.", 
    "doi": "10.1051/epjap/2017170266", 
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    "journal": {
      "issue": "3", 
      "title": "EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS", 
      "volume": "80"
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    "publication_date": "2017-01-01", 
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    "title": "Effect of dc field on ac-loss peak in a commercial Bi:2223/Ag tape"
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