Effect of oxidizing and reducing atmospheres on Ba(Ti0.90 Zr0.10)O3:2V ceramics as characterized by piezoresponse force microscopy
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
15/05/2015
15/05/2015
2011
|
| Resumo |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) The effect of annealing atmospheres (Atamb, N2 and O2) on the electrical properties of Ba(Ti0.90Zr0.10 )O3:2V (BZT10:2V) ceramics obtained by the mixed oxide method was investigated. X-ray photoelectron spectroscopy (XPS) analysis indicates that oxygen vacancies present near Zr and Ti ions reduce ferroelectric properties, especially in samples treated in an ambient atmosphere (Atamb ). BZT10:2V ceramics sintered in a nitrogen atmosphere showed better dielectric behaviour at room temperature with a dielectric permittivity measured at a frequency of 10 kHz equal to 16800 with dielectric loss of 0.023. Piezoelectric force microscopy (PFM) images reveal improvement in the piezoelectric coefficient by sintering the sample under nitrogen atmosphere. Thus, BZT10:2V ceramics sintered under a nitrogen atmosphere can be useful for practical applications which include nonvolatile digital memories, spintronics and data-storage media. |
| Formato |
139-147 |
| Identificador |
Processing and Application of Ceramics, v. 5, n. 3, p. 139-147, 2011. 1820-6131 http://hdl.handle.net/11449/123629 ISSN1820-6131-2011-05-03-139-147.pdf 3233942511496583 9330470036613511 3573363486614904 9848311210578810 |
| Idioma(s) |
eng |
| Relação |
Processing and Application of Ceramics |
| Direitos |
openAccess |
| Palavras-Chave | #Ferroelectrics #Powder metallurgy #X-ray diffraction #Dielectric response |
| Tipo |
info:eu-repo/semantics/article |
