Zn0.9Co0.1O-based diluted magnetic semiconducting thin films
作者： S. Ramachandran , Ashutosh Tiwari , J. Narayan
DOI: 10.1063/1.1764936
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摘要: Here we report a systematic study of structural, optical, and magnetic measurements on epitaxial Zn0.9Co0.1O films grown c-plane sapphire single crystal, at various temperatures (500–650°C), using pulsed-laser deposition. The main emphasis in this work has been the correlation microstructure with properties, specifically properties fate cobalt ions into substitutional sites versus precipitates. reasons for room-temperature ferromagnetism are explored, convincingly proved to be one inherent material. Most importantly, presence nanoclusters any phase was ruled out. This determined by high-resolution transmission electron microscopy, coupled energy loss spectroscopy STEM-Z (scanning microscopy-atomic number) contrast studies.
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