Colossal positive magneto-resistance in oxygen deficient Ca4Mn3O10
| Autor: | Manimuthu Periyasamy, Anja Olafsen Sjåstad, Helmer Fjellvåg |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Resistive touchscreen
Colossal magnetoresistance Materials science Condensed matter physics Magnetoresistance Transition temperature chemistry.chemical_element 02 engineering and technology Manganese 021001 nanoscience & nanotechnology 01 natural sciences Magnetic field Magnetization chemistry 0103 physical sciences 010306 general physics 0210 nano-technology Néel temperature |
| Zdroj: | 2017 IEEE International Magnetics Conference (INTERMAG). |
| Popis: | Huge changes in resistance induced by an external magnetic field, i.e., a colossal magnetoresistance effect, is a long-lived theme of the research due to both fundamental science and device applications. Careful analysis of oxygen-deficient Ca4Mn3O10, synthesized by the citric acid method, establishes a direct correlation between magnetic and electric properties. An electric resistive anomaly at the magnetic ordering temperature of ~115 K supports this correlation. We currently report on a colossal positive magnetoresistance up to ~1300% below the metal-to-insulator transition temperature for oxygen-deficient Ca4Mn3O10. The positive magnetoresistance effect in this system may be attributed to the field-induced carrier localization. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|