التفاصيل البيبلوغرافية
| العنوان: |
Ultrawideband dielectric spectroscopy of BaZrxTi1-xO3 ceramics and its microscopic mechanism of polarization. |
| المؤلفون: |
Teranishi, Takashi1, Hoshina, Takuya1, Takeda, Hiroaki1, Tsurumi, Takaaki1 |
| المصدر: |
Journal of Applied Physics. Jun2009, Vol. 105 Issue 11, p114102-1-114102-4. 4p. 1 Chart, 6 Graphs. |
| مصطلحات موضوعية: |
*BROADBAND dielectric spectroscopy, *BARIUM compounds, *ZIRCON, *TITANATES, *POLARIZATION (Electricity) |
| مستخلص: |
Ultrawideband dielectric spectroscopy analysis of barium zirconate titanate (BaZrxTi1-xO3, BZT) ceramics at different temperatures disclosed the contribution of both the dipole and the ionic polarizations to permittivity at around dielectric maximum temperature (Tm). In BaZr0.25Ti0.75O3 ceramics, the permittivity around Tm is dominated by the temperature dependence of the permittivity determined by the dipole polarization ([variant_greek_epsilon]dipole). In relaxor ferroelectrics, the diffuse dielectric response around Tm could be derived from the temperature dependence of [variant_greek_epsilon]dipole. The variation of [variant_greek_epsilon]dipole with temperature could be also explained by the growth process of polar nanoregions (PNRs) and the damping process of the thermal fluctuation of dipoles in PNRs. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |
