Molybdenum nitride nanoparticles — high-resolution transmission electron microscopy study
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The structure and size of molybdenum nitride nanoparticles were investigated using high-resolution transmission electron microscopy (HRTEM). Typical sizes of the particles were between 3 and 5 nm and they were mostly clustered together. High-resolution lattice imaging shows that the particles are single crystalline in nature and defect free. Two different phases of molybdenum nitride, γ-Mo 2 N (cubic) and δ-MoN (hexagonal) were identified. In addition, body centered cubic molybdenum phase was also present. It is anticipated that molybdenum is formed because of insufficient N 2 supply or slow reaction rate. A mixture of γ-Mo 2 N and δ-MoN suggests the existence of a temperature gradient in the chamber leading to formation of γ-Mo 2 N at lower temperature (500 to 700 °C) and δ-MoN at higher temperature (850 °C). © 2007 Elsevier B.V. All rights reserved.
author list (cited authors)
Chaudhuri, J., Nyakiti, L., Lee, R., Ma, Y., Li, P., Cui, Q. L., & Shen, L. H.