Controlled optical and magnetic properties of ZnO nanorods by Ar ion irradiation

Journal Article · Mon May 02 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3574772· OSTI ID:21518421

Panigrahy, Bharati; Bahadur, D ^[1]; Aslam, M ^[2]

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1. Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 (India)
2. Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai 400 076 (India)

Herein we report a controlled defect-related emission and magnetization properties of zinc oxide nanorods using low energy (2-5 keV) Ar ion irradiation. The ratio of the defect related emission to the excitonic emission decreases by an order magnitude due to the ion bombardment. The hysteresis loops of pristine and irradiated nanorods show ferromagnetic behavior at room temperature. A sharp decrease in the value of magnetization is due to an enhancement of irradiation time and energy. Combining with x-ray photoelectron spectroscopy results, a direct link between the magnetization and defect-emission of ZnO nanorods is established.

• OSTI ID: 21518421
• Journal Information: Applied Physics Letters, Vol. 98, Issue 18; Other Information: DOI: 10.1063/1.3574772; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
ABSORPTION SPECTRA
ARGON IONS
CRYSTAL DEFECTS
EMISSION
EXCITONS
FERROMAGNETIC MATERIALS
ION BEAMS
IRRADIATION
MAGNETIC PROPERTIES
MAGNETIZATION
NANOSTRUCTURES
OPTICAL PROPERTIES
SEMICONDUCTOR MATERIALS
TEMPERATURE RANGE 0273-0400 K
X-RAY PHOTOELECTRON SPECTROSCOPY
ZINC OXIDES
BEAMS
CHALCOGENIDES
CHARGED PARTICLES
CRYSTAL STRUCTURE
ELECTRON SPECTROSCOPY
IONS
MAGNETIC MATERIALS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
QUASI PARTICLES
SPECTRA
SPECTROSCOPY
TEMPERATURE RANGE
ZINC COMPOUNDS