Synthesis of Colloidal Mn2+:ZnO Quantum Dots and High-TC Ferromagnetic Nanocrystalline Thin Films

• Published in: Journal of the American Chemical Society Vol. 126; no. 30; pp. 9387 - 9398
• Main Authors: NORBERG, Nick S., KITTILSTVED, Kevin R., AMONETTE, James E., KUKKADAPU, Ravi K., SCHWARTZ, Dana A., GAMELIN, Daniel R.
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 04.08.2004
• Subjects: Colloids - chemistry; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Crystallization; Electron Spin Resonance Spectroscopy; Exact sciences and technology; Magnetic properties and materials; Magnetics; Manganese - chemistry; Nanotechnology; Nonmetallic ferromagnetic materials; Physics; Quantum Dots; Studies of specific magnetic materials; X-Ray Diffraction; Zinc Oxide - chemistry; Doped materials; Transition elements Compounds; Experimental study; Magnetic transitions; Manganese ions; Magnetic susceptibility; Ferromagnetic resonance; Zinc oxides; Semiconductor quantum dots; Luminescence spectrometry; Transition elements Ions; EPR spectroscopy; Magnetic properties

We report the synthesis of colloidal Mn(2+)-doped ZnO (Mn(2+):ZnO) quantum dots and the preparation of room-temperature ferromagnetic nanocrystalline thin films. Mn(2+):ZnO nanocrystals were prepared by a hydrolysis and condensation reaction in DMSO under atmospheric conditions. Synthesis was monito...