Physical Characterization of Defects in ZnO Diluted Magnetic Semiconductors
EMSL Project ID
10908
Abstract
We have recently reported above-room-temperature ferromagnetism in Mn2+-, Co2+, and Ni2+-doped ZnO nanocrystalline aggregates and thin films using high-quality colloids as solution precursors. The mechanisms that govern the ferromagnetic ordering in II-VI DMSs is dependent on the type and concentration of charge carriers. We propose to use various analytical and spectroscopic techniques, such as SIMS and XPS, to characterize the electronic defects (i.e, N, H, P, etc.) in our nanocrystalline ZnO thin films and correlate our findings with the observed magnetic properties.
Project Details
Project type
Exploratory Research
Start Date
2004-12-03
End Date
2005-12-19
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Kittilstved KR, DA Schwartz, AC Tuan, SM Heald, SA Chambers, and DR Gamelin. 2006. "Direct kinetic correlation of carriers and ferromagnetism in Co2+ : ZnO." Physical Review Letters 97:037203-1 - 037203-4. doi:10.1103/PhysRevLett.97.037203