Özet
High energy X-ray diffraction was employed to probe the complex constitutive behavior of a polycrystalline ferroelectric material in various sample orientations. Pb(Zn,Nb)O 3-Pb(Zr,Ti)O 3 (PZN-PZT) ceramics were subjected to a cyclic bipolar electric field while diffraction patterns were taken. Using transmission geometry and a two-dimensional detector, lattice strain and texture evolution (domain switching) were measured in multiple sample directions simultaneously. In addition, texture analysis suggests that non-180° domain switching is coupled with lattice strain evolution during uniaxial electrical loading. As a result of this material's high strain anisotropy, the full-pattern Rietveld method was inadequate to analyze the diffraction data. Instead, a modified Rietveld method, which includes an elastic anisotropy term, yielded significant improvements in the data analysis results.
Orijinal dil | İngilizce |
---|---|
Sayfa (başlangıç-bitiş) | 1494-1502 |
Sayfa sayısı | 9 |
Dergi | Acta Materialia |
Hacim | 60 |
Basın numarası | 4 |
DOI'lar | |
Yayın durumu | Yayınlandı - Şub 2012 |
Harici olarak yayınlandı | Evet |