Phase transition behavior of Sc-substituted Pb(Yb1/2N1/2)O-3 ceramics
- Authors
- Kim, J.H.; Koh, K.S.; Choo, W.K.
- Issue Date
- Oct-2002
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Pb(Yb1/2Nb1/2)O-3; Pb(Sc1/2Nb1/2)O-3; perovskite solid solution; antiferroelectric
- Citation
- INTEGRATED FERROELECTRICS, v.47, pp 11 - 18
- Pages
- 8
- Journal Title
- INTEGRATED FERROELECTRICS
- Volume
- 47
- Start Page
- 11
- End Page
- 18
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/65944
- DOI
- 10.1080/10584580190044470
- ISSN
- 1058-4587
1607-8489
- Abstract
- The crystal structure and the dielectric properties of (1-x)Pb(Yb1/2Nb1/2)O-3-xPb(Sc1/2Nb1/2)O-3 (PYN1-xPSNx) (0 less than or equal to x less than or equal to 0.50) solid solution have been studied. According to the XRD study, the room temperature crystal structure of PYN1-xPSNx becomes pseudocubic from the PYN's orthothombic with increasing x . Also the diffraction line intensities ascribed respectively to the AFE lattice modulation and the B-site ordering become gradually weaker and they disappear altogether for x > 0.30. In the PYN-rich composition range (0 less than or equal to x less than or equal to 0.30), the paraelectric(PE)-antiferroelectric(AFE) phase transition occurs sharply and is independent of the applied frequency. However, on further increasing Sc concentration (0.30 < x less than or equal to 0.50), the dielectric constant vs. temperature curve becomes gradually broader and begins to display the frequency-dependent relaxor behavior.
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