Abstract
Powders of CuMO2 (M=Fe, Al, Y, Ga) with delafossite structure were synthesized by a gel technology using citric acid (CA) as a complexant. Heating of a mixed solution of CA, H2O and the constituent metals at 130°C gave a brown transparent gel. The gel was preheated at 350°C to give a powder precursor which was subsequently converted to oxides by heat-treating it at 700°C-1050°C for 12h either in N2 or in air. X-Ray diffraction and Raman scattering analyses showed that all the samples are virtually of single-phase without any indication of secondary phases. Pure CuMO2 was successfully synthesized by the CA-based gel technology at lower temperature and with shorter sintering time when compared with those for the conventional solid-state reaction technique.
| Original language | English |
|---|---|
| Pages (from-to) | 185-188 |
| Number of pages | 4 |
| Journal | Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy |
| Volume | 46 |
| Issue number | 2 |
| Publication status | Published - 1999 Feb |
| Externally published | Yes |
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ASJC Scopus subject areas
- Mechanical Engineering
- Metals and Alloys
Cite this
Synthesis of delafossite type oxides CuMO2 (M=Fe, Al, Y, Ga) by the citric-acid based gel technology. / Nagai, Daisuke; Osada, Minoru; Kakihana, Masato.
In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 46, No. 2, 02.1999, p. 185-188.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Synthesis of delafossite type oxides CuMO2 (M=Fe, Al, Y, Ga) by the citric-acid based gel technology
AU - Nagai, Daisuke
AU - Osada, Minoru
AU - Kakihana, Masato
PY - 1999/2
Y1 - 1999/2
N2 - Powders of CuMO2 (M=Fe, Al, Y, Ga) with delafossite structure were synthesized by a gel technology using citric acid (CA) as a complexant. Heating of a mixed solution of CA, H2O and the constituent metals at 130°C gave a brown transparent gel. The gel was preheated at 350°C to give a powder precursor which was subsequently converted to oxides by heat-treating it at 700°C-1050°C for 12h either in N2 or in air. X-Ray diffraction and Raman scattering analyses showed that all the samples are virtually of single-phase without any indication of secondary phases. Pure CuMO2 was successfully synthesized by the CA-based gel technology at lower temperature and with shorter sintering time when compared with those for the conventional solid-state reaction technique.
AB - Powders of CuMO2 (M=Fe, Al, Y, Ga) with delafossite structure were synthesized by a gel technology using citric acid (CA) as a complexant. Heating of a mixed solution of CA, H2O and the constituent metals at 130°C gave a brown transparent gel. The gel was preheated at 350°C to give a powder precursor which was subsequently converted to oxides by heat-treating it at 700°C-1050°C for 12h either in N2 or in air. X-Ray diffraction and Raman scattering analyses showed that all the samples are virtually of single-phase without any indication of secondary phases. Pure CuMO2 was successfully synthesized by the CA-based gel technology at lower temperature and with shorter sintering time when compared with those for the conventional solid-state reaction technique.
UR - http://www.scopus.com/inward/record.url?scp=0032689001&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032689001&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0032689001
VL - 46
SP - 185
EP - 188
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
SN - 0532-8799
IS - 2
ER -