التفاصيل البيبلوغرافية
| العنوان: |
Burns, Néel, and structural phase transitions in multiferoic Pb(Fe2/3W1/3)O3–xPbTiO3 detected by an acoustic emission. |
| المؤلفون: |
Dul'kin, E., Mojaev, E., Roth, M., Kamba, S., Vilarinho, P. M. |
| المصدر: |
Journal of Applied Physics; Apr2008, Vol. 103 Issue 8, p083542-5, 5p, 1 Diagram, 5 Graphs |
| مصطلحات موضوعية: |
FERROELECTRICITY, DIELECTRICS, PHASE transitions, INDUSTRIAL chemistry, SOLID solutions |
| مستخلص: |
We investigated the ceramics samples of multiferoic solid solution of relaxor ferroelectric Pb(Fe2/3W1/3)O3 with ferroelectric PbTiO3 (abbreviated as PFW-xPT; x=0, 0.25, and 0.37) by means of acoustic emission (AE) method and simultaneously using the dielectric measurement below 700 K. A distinct AE response has been detected at Burns temperature Td≈640–650 K, where the dynamic polar clusters start to appear, at intermediate temperature of 510–520 K, where the polar clusters become probably static, at ferroelectric phase transition temperatures Tc, and at Néel antiferromagnetic phase transitions. The Néel temperatures TN in ceramics were observed to be lower than in the crystals; the origin is discussed. Based on detected AE responses, we have corrected previously obtained phase diagram for PFW-xPT system. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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