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Oxygen vacancy controlled tunable magnetic and electrical transport properties of (Li, Ni)-codoped ZnO thin filmsPublished in
2010
DOI: 10.1063/1.3449122
Volume: 96
Issue: 23
We investigated the electrical, magnetic, and magnetotransport properties of Li-Ni codoped ZnO thin films in the electron dominated, hole dominated, and insulating regimes. In a narrow window of oxygen growth pressure, 10 -3 - 10-2 mbar, the films exhibited p-type conductivity with a maximum hole concentration ∼8.2× 1017 cm -3. Magnetoresistance exhibited by the films is attributed to scattering of charge carriers due to localized magnetic moments. Insulating films showed superparamagnetic behavior, whereas both n-type and p-type films showed room temperature ferromagnetism. Our findings suggest that oxygen vacancies and Ni ions in cation site are jointly responsible for ferromagnetism that is not dependent on the carrier type. © 2010 American Institute of Physics.
Topics: Ferromagnetism (54)%54% related to the paper, Magnetoresistance (53)%53% related to the paper, Thin film (51)%51% related to the paper, Charge carrier (51)%51% related to the paper and Superparamagnetism (50)%50% related to the paper
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Content may be subject to copyright.This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publ... ...This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in [Oxygen vacancy controlled tunable magnetic and electrical transport properties of (Li, Ni)-codoped ZnO thin films. Applied Physics Letters 96, 23 p232504 (2010)] and may be found at https://doi.org/10.1063/1.3449122.
Related Papers (3)
About the journal
| Journal | Applied Physics Letters |
|---|---|
| ISSN | 00036951 |
| Open Access | No |
Authors (1)
Mamidanna Sri Ramachandra Rao- Enhanced photoluminescence and heterojunction characteristics of pulsed laser deposited ZnO nanostructures
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Concepts (29)
CATION SITES- Co-doped zno
- Electrical transport properties
- GROWTH PRESSURE
- INSULATING FILM
- LOCALIZED MAGNETIC MOMENTS
- Magneto transport properties
- Ni ions
- P-type
- P-type conductivity
- Room temperature ferromagnetism
- Superparamagnetic behavior
- Electric properties
- Electric resistance
- Ferromagnetism
- Hole concentration
- Magnetic field effects
- Magnetic materials
- Magnetic moments
- Magnetoresistance
- Metallic films
- Optical films
- Oxygen
- Superparamagnetism
- Thin films
- Transport properties
- Vacancies
- Zinc oxide
- Oxygen vacancies
