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Title: 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{sup +} 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{sup +} 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.
Authors:
; ;  [1] ; ;  [2] ;  [3] ;  [4] ;  [5] ;  [2] ; ;  [6] ;  [7] ;  [8] ;  [7] ;
  1. Division of Superconductivity and Magnetism, Institute for Experimental Physics II, Fakultät für Physik und Geowissenschaften, Linnéstraße 5, 04103 Leipzig (Germany)
  2. Laboratorio de Física del Sólido, Dpto. de Física, Facultad de Ciencias Exactas y Tecnología, Universidad Nacional de Tucumán (Argentina)
  3. (Argentina)
  4. Stanford Synchrotron Radiation Lightsource, Stanford University, Menlo Park, California 94025 (United States)
  5. IFLP-CONICET, CCT-La Plata and Departamento de Física, Universidad Nacional de La Plata (Argentina)
  6. Institute for Metal Physics, 36 Vernadsky Street, 03142 Kiev (Ukraine)
  7. (Germany)
  8. Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle (Germany)
Publication Date:
OSTI Identifier:
22412706
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 8; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DOPED MATERIALS; ELECTRONIC STRUCTURE; FERROMAGNETISM; HYDROGEN IONS 1 PLUS; ION IMPLANTATION; LITHIUM COMPOUNDS; LITHIUM IONS; TEMPERATURE RANGE 0273-0400 K; VACANCIES; ZINC OXIDES