TITLE

Above-room-temperature ferromagnetic Ni2+-doped ZnO thin films prepared from colloidal diluted magnetic semiconductor quantum dots

AUTHOR(S)
Schwartz, Dana A.; Kittilstved, Kevin R.; Gamelin, Daniel R.
PUB. DATE
August 2004
SOURCE
Applied Physics Letters;8/23/2004, Vol. 85 Issue 8, p1395
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report the preparation of spin-coated nickel-doped zinc oxide nanocrystalline thin films using high-quality colloidal diluted magnetic semiconductor (DMS) quantum dots as solution precursors. These films show robust ferromagnetism with Curie temperatures above 350 K and 300 K saturation moments up to 0.1 Bohr magnetons per nickel. These results demonstrate a step toward the use of colloidal zero-dimensional DMS nanocrystals as building blocks for the bottom-up construction of more complex ferromagnetic semiconductor nanostructures.
ACCESSION #
14154451

 

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