Strain and vacancy cluster behavior of vanadium and tungsten-doped Ba[Zr{sub 0.10}Ti{sub 0.90}]O{sub 3} ceramics

Journal Article · Mon Jan 21 00:00:00 EST 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2837196· OSTI ID:21016288

Moura, F; Simoes, A Z; Cavalcante, L S; Zampieri, M; Varela, J A; Longo, E; Zaghete, M A; Simoes, M L ^[1]

---

1. Instituto de Quimica, UNESP, P.O. Box 355, 14801-907 Araraquara, Sao Paulo, Brazil and Departamento de Quimica, UFSCar, P.O. Box 676, Sao Carlos, 13565-905 Sao Paulo (Brazil)

Strain and vacancy clusters behavior of polycrystalline vanadium (V) and tungsten (W)-doped Ba[Zr{sub 0.10}Ti{sub 0.90}]O{sub 3}, (BZT:2%V) and (BZT:2%W) ceramics obtained by the mixed oxide method was evaluated. Substitution of V and W reduces the distortion of octahedral clusters, decreasing the Raman modes. Electron paramagnetic resonance data indicate that the addition of dopants leads to defects and symmetry changes in the BZT lattice. Remnant polarization and coercive field are affected by V and W substitution due the electron-relaxation mode. The unipolar strain E curves as a function of electric field reach its maximum value for BZT:2%V and BZT:2%W ceramics.

• OSTI ID: 21016288
• Journal Information: Applied Physics Letters, Vol. 92, Issue 3; Other Information: DOI: 10.1063/1.2837196; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM COMPOUNDS
CERAMICS
DOPED MATERIALS
ELECTRIC FIELDS
ELECTRON SPIN RESONANCE
PARAMAGNETISM
POLARIZATION
POLYCRYSTALS
RELAXATION
TITANATES
TUNGSTEN
VACANCIES
VANADIUM
ZIRCONATES