Title :
Room temperature magnetism in sputtered (Zn,Co)O films
Author :
Yang, S.G. ; Pakhomov, A.B. ; Hung, S.T. ; Wong, C.Y.
Author_Institution :
Mater. Characterization & Preparation Facility, Hong Kong Univ. of Sci. & Technol., Kowloon, China
fDate :
9/1/2002 12:00:00 AM
Abstract :
Cobalt doped zinc oxide films Zn1-xCoxO with the atomic fraction x in the range 0.035-0.115 were prepared by sputtering from composite ZnO/Co3O4 targets. X-ray diffraction pattern shows the ZnO phase with [002] preferential orientation. Magnetic measurements show ferromagnetic behavior with Curie temperatures higher than 350 K.
Keywords :
Curie temperature; II-VI semiconductors; X-ray diffraction; X-ray photoelectron spectra; cobalt compounds; coercive force; ferromagnetic materials; magnetic hysteresis; magnetic thin films; semiconductor thin films; semimagnetic semiconductors; spontaneous magnetisation; sputter deposition; sputtered coatings; wide band gap semiconductors; zinc compounds; (ZnCo)O; 293 to 298 K; Curie temperatures; X-ray diffraction pattern; XPS; ZnO:Co; coercivity; diluted magnetic semiconductors; ferromagnetic behavior; film preparation; hysteresis loops; preferential orientation; room temperature magnetism; spontaneous magnetization; sputtered films; transparency; wide gap semiconductor; Atomic layer deposition; Glass; Magnetic materials; Magnetic semiconductors; Optical materials; Optical polarization; Semiconductor films; Sputtering; Temperature; Zinc oxide;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.803133
