Title of article
Microwave dielectric properties of (Pb,Ca,La)(Fe,Nb)O3+δ ceramics substituted by Ti for B-site
Author/Authors
Yang، نويسنده , , Qiuhong and Kim، نويسنده , , Eung Soo and Xu، نويسنده , , Jun and Meng، نويسنده , , Zhongyan، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
4
From page
332
To page
335
Abstract
Microwave dielectric properties of B-site substitution by Ti4+ in [(Pb0.5Ca0.5)0.95La0.05][(Fe0.5Nb0.5)1−yTiy]O3+δ (PCLFNT) system were investigated. Qf values and grain sizes of PCLFNT specimens decreased with the increase of Ti4+ content. Dielectric constant εr increased with the increase of Ti4+ content even though the ionic polarizability of Ti4+ ion (αTi=2.93 Å) was lower than that of (Fe,Nb)4+ ions (αB-site=3.13 Å). This is due to the increase of rattling of B-site ions by the smaller Ti4+ substitution. Especially, the microwave dielectric properties of PCLFNT specimens with εr=116.6, Qf=4950 GHz and TCF=+17.4 ppm/°C were obtained at y=0.10.
Keywords
(Pb , Ca , La)(Fe , Nb , Ti)O3+? , microwave dielectric ceramics , B-site substitution
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Serial Year
2003
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Record number
2140519
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