Dielectric Properties of La2O3 Doped Composite (PbxSr1−x)TiO3 Borosilicate Glass Ceramic
Joint Authors
Parkash, Om
Thakur, O. P.
Gautam, Chandkiram
Kumar, Devendra
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-05
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
Ferroelectric (PbxSr1−x)TiO3 (PST) perovskite phase has been crystallized in borosilicate glassy matrix with a suitable choice of composition and heat treatment schedule.
La2O3 is a donor dopant for PST and can make it semiconducting.
Dispersion of semiconducting perovskite phase in insulating glassy matrix in glass-ceramic samples may lead to the formation of space charge polarization around crystal-glass interface, leading to a high value of effective dielectric constant, εr.
Therefore, with the aim of the developing glass ceramics with high dielectric constant, glasses in the system 64[(PbxSr1−x)O·TiO2]-25[2SiO2·B2O3]-5[K2O]-5[BaO]-1[La2O3] have been prepared (0.5≤x≤1).
It is found that the addition of La2O3 strongly affected the crystallization and dielectric behavior of glass-ceramic with PST perovskite phase.
All glass ceramic samples show a diffuse broad Curie peak in their εr versus T plots.
Curie peak temperature, Tc, depends on compositions of the glass-ceramic samples as well as frequency of measurements.
American Psychological Association (APA)
Gautam, Chandkiram& Kumar, Devendra& Parkash, Om& Thakur, O. P.. 2012. Dielectric Properties of La2O3 Doped Composite (PbxSr1−x)TiO3 Borosilicate Glass Ceramic. Journal of Ceramics،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-505678
Modern Language Association (MLA)
Gautam, Chandkiram…[et al.]. Dielectric Properties of La2O3 Doped Composite (PbxSr1−x)TiO3 Borosilicate Glass Ceramic. Journal of Ceramics No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-505678
American Medical Association (AMA)
Gautam, Chandkiram& Kumar, Devendra& Parkash, Om& Thakur, O. P.. Dielectric Properties of La2O3 Doped Composite (PbxSr1−x)TiO3 Borosilicate Glass Ceramic. Journal of Ceramics. 2012. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-505678
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-505678