Title :
Room-temperature ferromagnetism in diluted magnetic zinc oxide semiconducting nanomaterials
Author :
Li Zhang, Xiao ; Qiao, Ru ; Li, Yan ; Qiu, Ri ; Soo Kang, Young
Author_Institution :
Pukyong Nat. Univ., Busan
Abstract :
The diluted magnetic zinc oxide semiconducting nanomaterials were synthesized via a solvothermal method. The obtained ZnO nanocrystals with different percentage of transition metal dopant have room-temperature ferromagnetism. The X-ray diffraction spectra indicate that all the samples show good diluted magnetic semiconductor structures. The results show that the magnetic metals ions substitute zinc ions in the hexagonal ZnO lattice, and part of them are ferromagnetically coupled up to room temperature even in isolated noninteracting nanocrystals.
Keywords :
II-VI semiconductors; X-ray diffraction; ferromagnetism; nanostructured materials; semimagnetic semiconductors; wide band gap semiconductors; zinc compounds; X-ray diffraction spectra; ZnO; ZnO - Binary; ZnO nanocrystals; diluted magnetic semiconductor structures; diluted magnetic zinc oxide; hexagonal ZnO lattice; magnetic metals ions; room-temperature ferromagnetism; semiconducting nanomaterials; solvothermal method; transition metal dopant; zinc ions; Electrons; Magnetic materials; Magnetic semiconductors; Nanocrystals; Nanomaterials; Nickel; Semiconductivity; X-ray diffraction; X-ray scattering; Zinc oxide; diluted magnetic; room-tempertaure ferromagnetism; zinc oxide;
Conference_Titel :
Nanotechnology Materials and Devices Conference, 2006. NMDC 2006. IEEE
Conference_Location :
Gyeongju
Print_ISBN :
978-1-4244-0540-4
Electronic_ISBN :
978-1-4244-0541-1
DOI :
10.1109/NMDC.2006.4388932
