Advances in methods to obtain and characterise room temperature magnetic ZnO

We report the existence of magnetic order at room temperature in Li-doped ZnO microwires after low energy H+ implantation. The microwires with diameters between 0.3 and 10 μm were prepared by a carbothermal process. We combine spectroscopy techniques to elucidate the influence of the electronic stru...

Descripción completa

Detalles Bibliográficos
Autores: Lorite, Israel, Straube, B., Ohldag, Hendrik, Kumar, Parmod, Villafuerte, M., Esquinazi, Pablo, Rodríguez Torres, Claudia Elena, Perez de Heluani, S., Antonov, V. N., Bekenov, L. V., Ernst, Arthur, Hoffmann, Martin, Nayak, Sanjeev K., Adeagbo, Waheed A., Fischer, G., Hergert, Wolfram
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/123447
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123447
Access Level:acceso abierto
Palabra clave:Física
X-ray absorption spectroscopy
X-ray magnetic circular dichroism spectroscopy
Photoluminescence spectroscopy
Crystallographic defects
Carbothermal process
Ferromagnetism
Electromagnetism
Magnetic hysteresis
Spintronics
Magnetic fields
Descripción
Sumario:We report the existence of magnetic order at room temperature in Li-doped ZnO microwires after low energy H+ implantation. The microwires with diameters between 0.3 and 10 μm were prepared by a carbothermal process. We combine spectroscopy techniques to elucidate the influence of the electronic structure and local environment of Zn, O, and Li and their vacancies on the magnetic response. Ferromagnetism at room temperature is obtained only after implanting H+ in Li-doped ZnO. The overall results indicate that low-energy proton implantation is an effective method to produce the necessary amount of stable Zn vacancies near the Li ions to trigger the magnetic order.

Similares en LA Referencia