Room temperature ferromagnetism in pure and Cu doped ZnO nanorods: role of copper or defects
- Room temperature ferromagnetism in pure and Cu doped ZnO nanorods: role of copper or defects
- S. Kumar; B. K. Koo; C. G. Lee; 가우탐; 채근화; S. K. Sharma; M. Knobel
- DMS; ZnO; NEXAFS; DC magnetization; photoluminescence; X-ray diffraction
- Issue Date
- FUNCTIONAL MATERIALS LETTERS
- VOL 4, NO 1, 17-20
- We report structural, magnetic and electronic structure studies of pure and Cu doped ZnO nanorods with the aim to understand the
origin of ferromagnetism. A structural study indicates that all the samples exhibit single phase nature and rules out the formation of
secondary phase. NEXAFS measurements reveal that Cu ions exist in Cu2+ state. Magnetic hysteresis loop measurements reflect
that the pure and Cu doped ZnO nanorods exhibit room temperature ferromagnetism. The increase in the intensity of green emission
in photoluminescence study indicates that defects density increases with Cu doping.
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