Fabrication And Characterization Of Ferromagnetic-Superconducting Hybrid Films Grown By Combined Pvd Techniques
| Autor: | Mehmet Kuru, A.E. Ozmetin, E. Ongun, E. Yazici |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Permalloy
Superconductivity Materials science Condensed matter physics Transition temperature General Physics and Astronomy Surfaces and Interfaces General Chemistry Sputter deposition Condensed Matter Physics Surfaces Coatings and Films Condensed Matter::Materials Science Ferromagnetism Magnet Condensed Matter::Superconductivity Layer (electronics) Critical field |
| Popis: | This study reports micro-fabricated magnet and superconductor (permalloy/Pb 82 Bi 18 ) hybrid film structures sequentially grown by magnetron sputtering and thermal deposition techniques. 300 nm thick PbBi film was quench condensed on top of a patterned permalloy film. Permalloy film was sputtered and patterned to form few micrometer-wide stripes. Ferromagnetic and superconducting layers were separated by Al 2 O 3 insulation. Transport superconducting properties, i.e. transition temperature T C ( H ) and second critical field H C 2 ( T ) were measured in a range of applied magnetic field between H = 0 and H = 7 kOe for the hybrid system and a control sample with only a layer of superconducting film deposited. The H C 2 ( T ) data showed that due to the interplay between the superconducting film and the ferromagnet, superconducting (SC) and normal current paths formed on the SC film. |
| Databáze: | OpenAIRE |
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