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SM ISO690:2012 MOLCHANOVA, E.. Field dependence of activation energy of thermally activated flux flow in superconducting MgB2 films. In: Conferinţa Internaţională a Tinerilor Cercetători, 11 noiembrie 2005, Chişinău. Chişinău: „Grafema Libris” SRL, 2005, p. 144. ISBN 9975-9716-1-X. |
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Conferinţa Internaţională a Tinerilor Cercetători 2005 | ||||||
Conferința "Conferinţa Internaţională a Tinerilor Cercetători" Chişinău, Moldova, 11 noiembrie 2005 | ||||||
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Pag. 144-144 | ||||||
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Recently [1] an unusually strong field dependence of the activation energy, U(B), of magnetic flux motion in the novel superconductor, MgB2 , was found. The aim of the present work is the definition of the dependence U =f(B). In Fig.1 is shown the field dependence U(B), found for thin MgB2 films in [1]. For choosing of the type of the function U(B) the calculating program was wrote in „Delphy-language”. The working algorithm was the method of least squares.figuraFig.1. Magnetic field dependence of the activation energy of flux flow in MgB2 deposited on Al2O3 substrate. The data are taken from [ 1]. As one can see, MgB2 demonstrates a strong field dependence of the activation energy, the exponential one, U(B) = 11894e-0.37B, with the critical index equal to 0.37. |
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Cuvinte-cheie superconductivity, activation energy, flux flow |
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