Abstract
Both Cr2O3 and NiO absorb 28 GHz millimeter-wave energy well and this strong coupling with millimeter-waves can be used to promote a chemical reaction with La2O3 to form perovskite-type LaCrO3 or LaNiO3 ceramics. In La 2O3-Cr2O3 system, the reaction proceeded rapidly and single phase LaCrO3 could be synthesized within 15 min even at lower temperature (∼400°C) as compared to conventional synthesis (T > 800°C). In the case of LaNiO3, the reaction proceeded rapidly in the early stage of heating (t < 15min), but not completed even after prolonged millimeter-wave irradiation. The results suggest an importance of millimeter-wave penetration depth, especially for processing of conductive materials.
| Original language | English |
|---|---|
| Pages (from-to) | 2469-2473 |
| Number of pages | 5 |
| Journal | IEICE Transactions on Electronics |
| Volume | E86-C |
| Issue number | 12 |
| Publication status | Published - 2003 Dec |
Keywords
- Conductive oxides
- Inorganic synthesis
- Millimeter-wave processing
- Penetration depth
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
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Cite this
Takizawa, H., & Iwasaki, M. (2003). Millimeter-Wave Processing of LaCrO3 and LaNiO3 Perovskites Using 28 GHz Frequency. IEICE Transactions on Electronics, E86-C(12), 2469-2473.