Magneto-Transport Properties of Compression Molded CrO2-Polymer Composite
| Autor: | Kartik Ghosh, Sanjay R. Mishra, Joseph Losby |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Magnetoresistance Mechanical Engineering Composite number Conductance 02 engineering and technology Conductivity Atmospheric temperature range 021001 nanoscience & nanotechnology Thermal conduction Semimetal 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Materials Chemistry Ceramics and Composites Composite material 0210 nano-technology Polyimide |
| Zdroj: | Journal of Composite Materials. 41:2843-2857 |
| ISSN: | 1530-793X 0021-9983 |
| DOI: | 10.1177/0021998307079976 |
| Popis: | We report detailed electrical and magnetotransport properties of compression molded CrO2—Polyimide polymer composites. The electrical transport data of the composites in the temperature range of 15—300 K were analyzed using a two-channel conductivity model based on spin dependent tunneling and multi-step hopping. The low temperature conductance is essentially dominated by spin dependent tunneling. The contribution from the multi-hopping conductivity increases with temperature increase. The presence of significant magnetoresistance in this composite is attributed partially to the opening of new conduction channels at the CrO2—polymer interface. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|