High-Temperature Electrical Transport and Thermoelectric Power of Partially Substituted Ca3Co4O9-Based Ceramics
β Scribed by Yuan-Hua Lin; Ce-Wen Nan; Yuheng Liu; Jingfeng Li; T. Mizokawa; Zhijian Shen
- Book ID
- 109260073
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 243 KB
- Volume
- 90
- Category
- Article
- ISSN
- 0002-7820
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Ca 3 Γ x Er x Co 4 O 9 + d (x ΒΌ 0, 0.05, 0.15, 0.3 and 0.5) samples were prepared using a sol-gel method followed by hot-pressing sintering technique. Powder X-ray diffraction analysis showed the single-phases of Ca 3 Γ x Er x Co 4 O 9 + d were obtained up to x ΒΌ 0.3 and the crystallinity of the sam
Ag-added (Ca 0.975 La 0.025 ) 3 Co 4 O 9 ceramics were fabricated using spark plasma sintering from the precursor powder synthesized by a polyacrylamide gel method. The results indicated that Ag precipitated as a second phase in Ca 3 Co 4 O 9 matrix. The addition of Ag was effective in enhancing the