Dielectric anomaly and low frequency dispersion in ferroelectric materials at high temperatures

A dielectric anomaly related to the observed departure from the Curie–Weiss law in several Aferroelectric materials has been characterized in this work in ferroelectric BaTiO3. The electrical properties of the material were investigated using the a.c. analysis technique. From the analysis of the per...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Journal of materials science 1998, Vol.33 (6), p.1633-1637
Hauptverfasser:	M'PEKO, J.-C, PORTELLES, J, CALDERON, F, RODRIGUEZ, G
Format:	Artikel
Sprache:	eng
Schlagworte:	Barium titanates Condensed matter: electronic structure, electrical, magnetic, and optical properties Dielectric properties of solids and liquids Dielectric, piezoelectric, ferroelectric and antiferroelectric materials Dielectrics, piezoelectrics, and ferroelectrics and their properties Dispersion Electrical properties Exact sciences and technology Ferroelectric materials Ferroelectricity Low frequencies Materials science Niobates, titanates, tantalates, pzt ceramics, etc Permittivity (dielectric function) Physics
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A dielectric anomaly related to the observed departure from the Curie–Weiss law in several Aferroelectric materials has been characterized in this work in ferroelectric BaTiO3. The electrical properties of the material were investigated using the a.c. analysis technique. From the analysis of the permittivity versus frequency curves collected at various temperatures, we discuss the anomalous behaviour as a result of a low frequency dispersion phenomenon due to the characteristics of the conduction processes at the material inhomogeneities.
ISSN:	0022-2461 1573-4803
DOI:	10.1023/A:1017580223934