Dielectric Properties of (1-x)La(Mg 0.5 Sn 0.5 )O 3 -xCa 0.8 Sr 0.2 TiO 3 Ceramic System at Microwave Frequencies.
In: Ferroelectrics, Jg. 423 (2011-09-15), Heft 1, S. 86-93
Online
academicJournal
Zugriff:
The microwave dielectric properties of (1-x)La(Mg0.5Sn0.5)O3-xCa0.8Sr0.2TiO3 ceramic system were investigated with a view to their exploitation for microwave devices. The diffraction peaks of (1-x)La(Mg0.5Sn0.5)O3-xCa0.8Sr0.2TiO3 ceramic system shifted to higher angles as x increased from 0.4 to 0.7. The X-ray diffraction patterns of the 0.4La(Mg0.5Sn0.5)O3-0.6Ca0.8Sr0.2TiO3 ceramics exhibited no significant variation of phase with sintering temperatures. The average grain size of the (1-x)La(Mg0.5Sn0.5)O3-xCa0.8Sr0.2TiO3 ceramic system decreased from 5.2 to 2.4 μm as x increased from 0.4 to 0.7, sintered at 1550°C for 4 h. The dielectric constant increased from 28.7 to 46.0 and the quality factor (Q × f) decreased from 35,800 to 6,600 GHz as x increased from 0.4 to 0.7, sintered at 1550°C for 4 h. The average value of temperature coefficient of resonant frequency (τ f ) increased from −66 to +32 ppm/°C as the x increased from 0.4 to 0.7. [ABSTRACT FROM PUBLISHER]
Titel: |
Dielectric Properties of (1-x)La(Mg 0.5 Sn 0.5 )O 3 -xCa 0.8 Sr 0.2 TiO 3 Ceramic System at Microwave Frequencies.
|
---|---|
Autor/in / Beteiligte Person: | Chen, Yih-Chien ; Chen, Kuei-Chien ; Chen, Kai-Hao |
Link: | |
Zeitschrift: | Ferroelectrics, Jg. 423 (2011-09-15), Heft 1, S. 86-93 |
Veröffentlichung: | 2011 |
Medientyp: | academicJournal |
ISSN: | 0015-0193 (print) |
DOI: | 10.1080/00150193.2011.620876 |
Schlagwort: |
|
Sonstiges: |
|