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...

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Detalles Bibliográficos
Autores principales: 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
Formato: Articulo
Lenguaje:Inglés
Publicado: 2015
Materias:
Física
X-ray absorption spectroscopy
X-ray magnetic circular dichroism spectroscopy
Photoluminescence spectroscopy
Crystallographic defects
Carbothermal process
Ferromagnetism
Electromagnetism
Magnetic hysteresis
Spintronics
Magnetic fields
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/123447
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
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.

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