4 citations · 6 across the 5 of their papers we have counts for
5 papers
300 K Ferromagnetic Magnetic Circular Dichroism in Co2+-doped ZnO Activated by Shallow Donors
Kevin R. Kittilstved, Jialong Zhao, William K. Liu +2
Cobalt-doped ZnO (Co2+:ZnO) films were studied by magnetic circular dichroism (MCD) spectroscopy. A broad 300 K ferromagnetic MCD signal was observed between 1.4 and 4.0 eV after i…
Critical Nucleus Size, Composition, and Energetics in the Synthesis of Doped ZnO Quantum Dots
J. Daniel Bryan, Dana A. Schwartz, Daniel R. Gamelin
The influence of Co2+ ions on the homogeneous nucleation of ZnO is examined. Using electronic absorption spectroscopy as a dopant-specific in situ spectroscopic probe, Co2+ ions ar…
Synthesis of Colloidal Mn2+:ZnO Quantum Dots and High-TC Ferromagnetic Nanocrystalline Thin Films
Nick S. Norberg, Kevin R. Kittilstved, James E. Amonette +3
We report the synthesis of colloidal Mn2+-doped ZnO (Mn2+:ZnO) quantum dots and the preparation of room-temperature ferromagnetic nanocrystalline thin films. Mn2+:ZnO nanocrystals…
Strong Room-Temperature Ferromagnetism in Co2+-Doped TiO2 made from Colloidal Nanocrystals
J. Daniel Bryan, Steve M. Heald, Scott A. Chambers +1
Colloidal cobalt-doped TiO2 (anatase) nanocrystals were synthesized and studied by electronic absorption, magnetic circular dichroism, transmission electron microscopy, magnetic su…
Reversible 300K Ferromagnetic Ordering in a Diluted Magnetic Semiconductor
Dana A. Schwartz, Daniel R. Gamelin
The discovery of reversible 300 K ferromagnetic ordering in a diluted magnetic semiconductor is reported. Switching of room-temperature ferromagnetism between "on" and "off" states…