| Full text | |
| Author(s): |
Oliveira, Felipe Souza
[1]
;
Guimaraes, Luan Gabriel
[1]
;
dos Santos, Carlos Alberto Moreira
[1]
;
de Lima, Bruno Sanches
[2, 1]
;
da Luz, Mario Sergio
[3]
Total Authors: 5
|
| Affiliation: | [1] Univ Sao Paulo, Escola Engn Lorena, BR-12602810 Lorena, SP - Brazil
[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil
[3] Univ Fed Triangulo Mineiro, Inst Ciencias Tecnol & Exatas, BR-13025180 Uberaba, MG - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Materials Chemistry and Physics; v. 263, APR 15 2021. |
| Web of Science Citations: | 1 |
| Abstract | |
This work deals with SrTiO3-delta single crystals annealed under vacuum. The electrical resistivity and the carrier density were measured at room temperature by the van der Pauw method using an Arduino-based device for automatic contact switching integrated to the Quantum Design PPMS. The data acquired from the annealed samples were plotted along with a data compilation from several previous reports. The analyses confirm a linear scaling between the electrical resistivity and the Hall coefficient which attends for a wide doping window. Hence, the room temperature carrier density can be estimated from a simple electrical resistivity measurement. A brief discussion about the thermodynamics of the vacuum annealing process is reported. The entalphy is estimatted as 3.6(4) eV for the SrTiO3 reduction process. (AU) | |
| FAPESP's process: | 09/54001-2 - Acquisition of cryogen-free equipment for the characterization of magnetic properties by vibrating sample magnetometry |
| Grantee: | Carlos Alberto Moreira dos Santos |
| Support Opportunities: | Multi-user Equipment Program |