The Role of Microstructure on Microwave Dielectric Properties of (Ba,Sr)TiO 3 Ceramics
Microstructural effects on the microwave dielectric properties of (Ba 0.4 Sr 0.6 )TiO 3 ( BST ) polycrystalline ceramics were investigated, focusing on the grain size. Sintering temperatures between 1350°C and 1500°C have a strong effect on the permittivity (880
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| Veröffentlicht in: | Journal of the American Ceramic Society 2016-03, Vol.99 (3), p.905-910 |
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| container_title | Journal of the American Ceramic Society |
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| creator | Song, Zhe Xu, Qi Zhang, Shujun Liu, Hanxing Luo, Wei Hao, Hua Cao, Minghe Yao, Zhonghua Hu, Wei Shi, Yatong Lanagan, Michael T. |
| description | Microstructural effects on the microwave dielectric properties of (Ba
0.4
Sr
0.6
)TiO
3
(
BST
) polycrystalline ceramics were investigated, focusing on the grain size. Sintering temperatures between 1350°C and 1500°C have a strong effect on the permittivity (880 |
| doi_str_mv | 10.1111/jace.14028 |
| format | Article |
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0.4
Sr
0.6
)TiO
3
(
BST
) polycrystalline ceramics were investigated, focusing on the grain size. Sintering temperatures between 1350°C and 1500°C have a strong effect on the permittivity (880 < ε
r
< 990), quality factor (570 GHz <
Q
×
f
< 1150 GHz), and temperature coefficient of resonant frequency (3920 ppm/°C < τ
f
< 4560 ppm/°C) at microwave frequency (≈1.4 GHz). The tunable permittivity characteristics (measured at 10 kHz), were also found to be sensitive to the sintering process, demonstrating the possibility of tailoring material property by designed processing. In addition, the effect of the sintering process on grain structure was investigated by
XRD
calculation and Raman scattering characterization. Less confined phonons were believed to contribute to the enhanced microwave performance as an intrinsic effect (grain size effect), for samples with higher sintering temperature and longer dwell time. On the contrary, the macroscopic properties tend to saturate (or deteriorate), for samples at intensified sintering condition, being thought to be dominated by the extrinsic factors (such as the abundant defects in large grains), as confirmed by the
SEM
observations.]]></description><identifier>ISSN: 0002-7820</identifier><identifier>EISSN: 1551-2916</identifier><identifier>DOI: 10.1111/jace.14028</identifier><language>eng</language><ispartof>Journal of the American Ceramic Society, 2016-03, Vol.99 (3), p.905-910</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c768-830c88498d34fcd5341ac9be103a27d3b33f669e389581515006fa094f0b52223</citedby><cites>FETCH-LOGICAL-c768-830c88498d34fcd5341ac9be103a27d3b33f669e389581515006fa094f0b52223</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><contributor>Alford, N.</contributor><creatorcontrib>Song, Zhe</creatorcontrib><creatorcontrib>Xu, Qi</creatorcontrib><creatorcontrib>Zhang, Shujun</creatorcontrib><creatorcontrib>Liu, Hanxing</creatorcontrib><creatorcontrib>Luo, Wei</creatorcontrib><creatorcontrib>Hao, Hua</creatorcontrib><creatorcontrib>Cao, Minghe</creatorcontrib><creatorcontrib>Yao, Zhonghua</creatorcontrib><creatorcontrib>Hu, Wei</creatorcontrib><creatorcontrib>Shi, Yatong</creatorcontrib><creatorcontrib>Lanagan, Michael T.</creatorcontrib><title>The Role of Microstructure on Microwave Dielectric Properties of (Ba,Sr)TiO 3 Ceramics</title><title>Journal of the American Ceramic Society</title><description><![CDATA[Microstructural effects on the microwave dielectric properties of (Ba
0.4
Sr
0.6
)TiO
3
(
BST
) polycrystalline ceramics were investigated, focusing on the grain size. Sintering temperatures between 1350°C and 1500°C have a strong effect on the permittivity (880 < ε
r
< 990), quality factor (570 GHz <
Q
×
f
< 1150 GHz), and temperature coefficient of resonant frequency (3920 ppm/°C < τ
f
< 4560 ppm/°C) at microwave frequency (≈1.4 GHz). The tunable permittivity characteristics (measured at 10 kHz), were also found to be sensitive to the sintering process, demonstrating the possibility of tailoring material property by designed processing. In addition, the effect of the sintering process on grain structure was investigated by
XRD
calculation and Raman scattering characterization. Less confined phonons were believed to contribute to the enhanced microwave performance as an intrinsic effect (grain size effect), for samples with higher sintering temperature and longer dwell time. On the contrary, the macroscopic properties tend to saturate (or deteriorate), for samples at intensified sintering condition, being thought to be dominated by the extrinsic factors (such as the abundant defects in large grains), as confirmed by the
SEM
observations.]]></description><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNotkE9LxDAUxIMoWFcvfoIcVez6kjRtctT6F1ZWtHgtafqCWbp2SbqK397WdS7DDMzj8SPklMGcjbpaGYtzlgFXeyRhUrKUa5bvkwQAeFooDofkKMbVGJlWWULeqw-kr32HtHf02dvQxyFs7bANY_O5a77NF9Jbjx3aIXhLX0K_wTB4jNPo7MZcvoXzyi-poCUGs_Y2HpMDZ7qIJ_8-I9X9XVU-povlw1N5vUhtkatUCbBKZVq1InO2lSJjxuoGGQjDi1Y0Qrg81yiUlopJJgFyZ0BnDhrJORczcrE7O_0dA7p6E_zahJ-aQT0BqScg9R8Q8Qu17FHf</recordid><startdate>201603</startdate><enddate>201603</enddate><creator>Song, Zhe</creator><creator>Xu, Qi</creator><creator>Zhang, Shujun</creator><creator>Liu, Hanxing</creator><creator>Luo, Wei</creator><creator>Hao, Hua</creator><creator>Cao, Minghe</creator><creator>Yao, Zhonghua</creator><creator>Hu, Wei</creator><creator>Shi, Yatong</creator><creator>Lanagan, Michael T.</creator><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>201603</creationdate><title>The Role of Microstructure on Microwave Dielectric Properties of (Ba,Sr)TiO 3 Ceramics</title><author>Song, Zhe ; Xu, Qi ; Zhang, Shujun ; Liu, Hanxing ; Luo, Wei ; Hao, Hua ; Cao, Minghe ; Yao, Zhonghua ; Hu, Wei ; Shi, Yatong ; Lanagan, Michael T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c768-830c88498d34fcd5341ac9be103a27d3b33f669e389581515006fa094f0b52223</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Song, Zhe</creatorcontrib><creatorcontrib>Xu, Qi</creatorcontrib><creatorcontrib>Zhang, Shujun</creatorcontrib><creatorcontrib>Liu, Hanxing</creatorcontrib><creatorcontrib>Luo, Wei</creatorcontrib><creatorcontrib>Hao, Hua</creatorcontrib><creatorcontrib>Cao, Minghe</creatorcontrib><creatorcontrib>Yao, Zhonghua</creatorcontrib><creatorcontrib>Hu, Wei</creatorcontrib><creatorcontrib>Shi, Yatong</creatorcontrib><creatorcontrib>Lanagan, Michael T.</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Song, Zhe</au><au>Xu, Qi</au><au>Zhang, Shujun</au><au>Liu, Hanxing</au><au>Luo, Wei</au><au>Hao, Hua</au><au>Cao, Minghe</au><au>Yao, Zhonghua</au><au>Hu, Wei</au><au>Shi, Yatong</au><au>Lanagan, Michael T.</au><au>Alford, N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Role of Microstructure on Microwave Dielectric Properties of (Ba,Sr)TiO 3 Ceramics</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>2016-03</date><risdate>2016</risdate><volume>99</volume><issue>3</issue><spage>905</spage><epage>910</epage><pages>905-910</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><abstract><![CDATA[Microstructural effects on the microwave dielectric properties of (Ba
0.4
Sr
0.6
)TiO
3
(
BST
) polycrystalline ceramics were investigated, focusing on the grain size. Sintering temperatures between 1350°C and 1500°C have a strong effect on the permittivity (880 < ε
r
< 990), quality factor (570 GHz <
Q
×
f
< 1150 GHz), and temperature coefficient of resonant frequency (3920 ppm/°C < τ
f
< 4560 ppm/°C) at microwave frequency (≈1.4 GHz). The tunable permittivity characteristics (measured at 10 kHz), were also found to be sensitive to the sintering process, demonstrating the possibility of tailoring material property by designed processing. In addition, the effect of the sintering process on grain structure was investigated by
XRD
calculation and Raman scattering characterization. Less confined phonons were believed to contribute to the enhanced microwave performance as an intrinsic effect (grain size effect), for samples with higher sintering temperature and longer dwell time. On the contrary, the macroscopic properties tend to saturate (or deteriorate), for samples at intensified sintering condition, being thought to be dominated by the extrinsic factors (such as the abundant defects in large grains), as confirmed by the
SEM
observations.]]></abstract><doi>10.1111/jace.14028</doi><tpages>6</tpages></addata></record> |
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| language | eng |
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| source | Access via Wiley Online Library |
| title | The Role of Microstructure on Microwave Dielectric Properties of (Ba,Sr)TiO 3 Ceramics |
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