| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1594410 | Solid State Communications | 2010 | 4 Pages |
Abstract
The magnetothermopower have been studied in Lu-doped Ca3−xLuxCo4O9+δ. A strong magnetic field suppression of thermopower indicates large spin entropy contribution. The magnetothermopower for doped samples are overall enhanced compared with that for undoped Ca3Co4O9+δ, providing an experimental evidence for the enhancement of spin entropy. Magnetic results confirm that Co4+ concentration is reduced by Lu doping. We suggest that the reduction in Co4+ concentration results in the enhanced spin entropy.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Guodong Tang, Chipui Tang, Xiaonong Xu, Yun He, Li Qiu, Liya Lv, Zhihe Wang, Youwei Du,