Thermochemical analysis on the growth of NiAl2O4 rods
- Authors
- Kim, Sang Sub; Sun, Gun-Joo; Kim, Hyoun Woo; Kwon, Yong Jung; Wu, Ping
- Issue Date
- Mar-2014
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- RSC ADVANCES, v.4, no.3, pp.1159 - 1162
- Indexed
- SCIE
SCOPUS
- Journal Title
- RSC ADVANCES
- Volume
- 4
- Number
- 3
- Start Page
- 1159
- End Page
- 1162
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/160488
- DOI
- 10.1039/c3ra43196g
- ISSN
- 2046-2069
- Abstract
- We have succeeded in growing cubic submicron-sized NiAl2O4 rods on sapphire substrates by means of heating a mixture of NiO and graphite powders. At 1600 degrees C, NiAl2O4 rods terminated by SiOx-containing nanoparticles were grown on the sapphire substrates. In contrast, NiO rods grew randomly at 1500 degrees C. We elucidated the growth steps of cubic NiAl2O4 submicron-sized rods on the basis of a thermochemical approach, revealing the critical role of liquid silica that blocks the continuous loss of Ni to the vapor phase for the successful growth of NiAl2O4 rods.
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