|
|
Publication
|
| Title of Article |
thermoelectric properties of transition metals (ไม่ผ่านการอนุมัติ 1321346687) |
| Date of Acceptance |
2 April 2010 |
| Journal |
| Title of Journal |
Journal of Alloys and Compounds |
| Standard |
|
| Institute of Journal |
Journal of Alloys and Compounds |
| ISBN/ISSN |
|
| Volume |
503 |
| Issue |
2 |
| Month |
|
| Year of Publication |
2012 |
| Page |
431-435 |
| Abstract |
Wereport the synthesis of a thermoelectric oxide Ca3Co4O9 using a sol–gel method with polyvinyl alcohol
as the dispersion agent. The transition metals (Cr, Fe, Ni, Cu and Zn) were doped at the Co-site to form
Ca3Co3.8M0.2O9. The single phases of the doped Ca3Co3.8M0.2O9 were confirmed by thermogravimetric
and differential thermal analysis, and X-ray diffraction patterns. Relatively high porosity was observed in
scanning electron micrographs. The density of the samples was the highest for Cu-doped Ca3Co3.8M0.2O9
(78% of the theoretical density). The Young’s modulus and shear modulus measured by the sound velocity
method were found to be in the order of tens of GPa, and also found to be highly correlated to the density
of the samples. The magnetic properties of the transition metals-doped Ca3Co3.8M0.2O9 were found to be
insensitive to the doping and all sintered samples showed paramagnetic behaviour, with susceptibility
of ∼10−6 emu/(Oe g), at room temperature. |
| Keyword |
Thermoelectric, Ca3Co4O9, Sol-gel synthesis, mechanical properties, Magnetic measurement |
| Author |
|
| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ได้รับการตอบรับให้ตีพิมพ์ |
| Level of Publication |
นานาชาติ |
| citation |
true |
| Part of thesis |
true |
| Attach file |
|
| Citation |
0
|
|
|
|
|
|
|
|
|
Journal Publication
ไทย