Dielectric properties and phase transitions of (Pb0.87La0.02Ba0.1)(Zr0.6Sn0.4-xTix)O3 ceramics with compositions near AFE/RFE phase boundary
In: Solid state communications, Jg. 132 (2004), Heft 12, S. 809-813
academicJournal
- print, 17 ref
Zugriff:
The electrical properties and phase transition behavior of (Pb0.87La0.02Ba0.1)(Zr0.6Sn0.4-xTix)O3 solid solutions (PLBZST, 0.04≤x0.2) were investigated by the X-ray diffraction, permittivity, pyroelectric current, and P-E electric hysterisis loops. As the composition x increased from 0.04 to 0.2, the antiferroelectric ceramics (x≤0.07, AFE) with tetragonal phase changed to the ferroelectric relaxors (RFE, 0.09 ≤x). AFE ceramics showed a peculiar diffuse phase transition and dielectric relaxation at the low temperature (down to -100 °C) due to a frustration between AFE and FE state. With an increase in composition x, electrically field-induced AFE-FE switching field (EAFE-FE) and AFE-paraelectric (PE) phase transition temperature (Tc) are depressed in the temperature (T)-Ti composition (x) phase diagram, a FE-AFE-PE triple phase point (Ttr) with the lowest transition temperature occurred at x=0.09. The pyroelectric currents under an application of various external electric field (E) were measured to identify a T-E phase diagram of the PLBZST compound.
Titel: |
Dielectric properties and phase transitions of (Pb0.87La0.02Ba0.1)(Zr0.6Sn0.4-xTix)O3 ceramics with compositions near AFE/RFE phase boundary
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Autor/in / Beteiligte Person: | PENG, LIU ; XI, YAO |
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Zeitschrift: | Solid state communications, Jg. 132 (2004), Heft 12, S. 809-813 |
Veröffentlichung: | Oxford: Elsevier, 2004 |
Medientyp: | academicJournal |
Umfang: | print, 17 ref |
ISSN: | 0038-1098 (print) |
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