Scanning Electron Microscopy of Single-Crystal NiO Energetics

Autor:	C. J. Miglionico, Lawrence E Murr
Rok vydání:	1975
Předmět:	Crystallography Materials science Scanning electron microscope Energetics Non-blocking I/O General Medicine Single crystal
Zdroj:	Proceedings, annual meeting, Electron Microscopy Society of America. 33:68-69
ISSN:	2690-1315 0424-8201
DOI:	10.1017/s0424820100113962
Popis:	The fusion of NiO powder in an oxygen-rich oxy-hydrogen flame at ∼2000°C at atmospheric pressure has been observed to produce, in addition to single-crystal Ni growth, a residual (001) vicinal NiO growth which exhibits an intergrowth and regrowth of isolated particles characterized as equilibrium (regular-faced) polyhedra, and a prominent “negative crystal” phenomena in the vicinal faces of the oxide. Observations of the NiO crystal growth and particle morphologies were made in a JE0L-JSM-50A scanning electron microscope operated at 25 kV in the secondary electron emission mode. The samples were uncoated.Figure 1(a) shows typically the NiO growth phenomena observed, while Fig. 1(b) illustrates the vicinal-surface growth features schematically. The major structural features can be characterized as terraces, ledges, and kinks, with "negative" growth features related to systematic terrace-atom desorption.
Databáze:	OpenAIRE
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