Temperature dependence of a width of ΔH=ΔB region in 5 wt.% (Fe, Ti) particle-doped MgB2 superconductor
| Autor: | Yul-Seong Kim, Gyu-Bo Kim, H.B. Lee, Hong Jo Park |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Superconductivity Shortest distance Materials science Condensed matter physics Doping Energy Engineering and Power Technology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials Electromagnetic induction Magnetic field Volume (thermodynamics) Condensed Matter::Superconductivity 0103 physical sciences Particle Electrical and Electronic Engineering 010306 general physics Critical field |
| Zdroj: | Physica C: Superconductivity and its Applications. 584:1353827 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/j.physc.2021.1353827 |
| Popis: | A temperature dependence of a width of Δ H = Δ B region has been studied for 5 wt.% (Fe, Ti) particle-doped MgB 2 superconductor, which is the region that increased applied magnetic field is the same as increasing magnetic induction in a superconductor. The result revealed that widths of the region are linear along temperature. In this paper, we present meanings of the result and details of the calculation. In previous report, we represented a theory that a width of Δ H = Δ B region is related with upper critical field of the superconductor, which is that pinned fluxes at volume defect are pick-out depinned and move in Δ H = Δ B region when the shortest distance between them is the same as that of upper critical field of the superconductor. Thus, we inspected the relationship between a width of the region and upper critical field along temperature theoretically and experimentally. The results show that the two are not only linear along temperature, but also are linear each other. The results support the theory because temperature dependence of a width of Δ H = Δ B region is linear to that of upper critical field of the superconductor. |
| Databáze: | OpenAIRE |
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