Principal element design of garnets to access structure stability and excellent microwave dielectric properties
Guided by the tolerance factor and average electronegativity difference, two stable garnets with compositions Ca3BTiGe3O12 (B = Mg, Zn) were designed, synthesized followed by structural, and dielectric characterization. The phase purity and structural characteristics were analyzed using X‐ray, Rietv...
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| Veröffentlicht in: | Journal of the American Ceramic Society 2022-07, Vol.105 (7), p.4805-4814 |
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| container_title | Journal of the American Ceramic Society |
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| creator | Mei, Hongrong Zhang, Liangbin Chen, Feilong Wang, Zhiguo Rao, Zhenggang Li, Chunchun |
| description | Guided by the tolerance factor and average electronegativity difference, two stable garnets with compositions Ca3BTiGe3O12 (B = Mg, Zn) were designed, synthesized followed by structural, and dielectric characterization. The phase purity and structural characteristics were analyzed using X‐ray, Rietveld refinement, and microstructural analysis through scanning electron microscopy. A cubic structure with an Ia‐3d space group was confirmed for synthesized compositions. A combination of microwave dielectric properties for both garnets suggested that Ca3MgTiGe3O12 ceramic possessed a much higher quality factor (Q × f) ∼ 84 000 ± 3000 GHz coupled by a higher dielectric constant (εr) ∼ 12.97 ± 0.03, and a smaller temperature coefficient of resonance frequency (τf) ∼ −29.4 ± 1.5 ppm/°C compared to its Zn counterpart (Q × f ∼ 45 000 ± 2000 GHz, εr ∼ 12.84 ± 0.03, and τf ∼ −33.19 ± 1.6 ppm/°C). Such differences in dielectric performances were further explored utilizing packing fraction, ion polarizability, bond valence, Raman, and infrared spectrum to understand structure–property relationship. |
| doi_str_mv | 10.1111/jace.18459 |
| format | Article |
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The phase purity and structural characteristics were analyzed using X‐ray, Rietveld refinement, and microstructural analysis through scanning electron microscopy. A cubic structure with an Ia‐3d space group was confirmed for synthesized compositions. A combination of microwave dielectric properties for both garnets suggested that Ca3MgTiGe3O12 ceramic possessed a much higher quality factor (Q × f) ∼ 84 000 ± 3000 GHz coupled by a higher dielectric constant (εr) ∼ 12.97 ± 0.03, and a smaller temperature coefficient of resonance frequency (τf) ∼ −29.4 ± 1.5 ppm/°C compared to its Zn counterpart (Q × f ∼ 45 000 ± 2000 GHz, εr ∼ 12.84 ± 0.03, and τf ∼ −33.19 ± 1.6 ppm/°C). 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The phase purity and structural characteristics were analyzed using X‐ray, Rietveld refinement, and microstructural analysis through scanning electron microscopy. A cubic structure with an Ia‐3d space group was confirmed for synthesized compositions. A combination of microwave dielectric properties for both garnets suggested that Ca3MgTiGe3O12 ceramic possessed a much higher quality factor (Q × f) ∼ 84 000 ± 3000 GHz coupled by a higher dielectric constant (εr) ∼ 12.97 ± 0.03, and a smaller temperature coefficient of resonance frequency (τf) ∼ −29.4 ± 1.5 ppm/°C compared to its Zn counterpart (Q × f ∼ 45 000 ± 2000 GHz, εr ∼ 12.84 ± 0.03, and τf ∼ −33.19 ± 1.6 ppm/°C). Such differences in dielectric performances were further explored utilizing packing fraction, ion polarizability, bond valence, Raman, and infrared spectrum to understand structure–property relationship.</description><subject>average electronegativity difference</subject><subject>ceramic</subject><subject>Composition</subject><subject>Dielectric properties</subject><subject>Electronegativity</subject><subject>garnet</subject><subject>Garnets</subject><subject>Infrared radiation</subject><subject>Microstructural analysis</subject><subject>microwave dielectric properties</subject><subject>Structural analysis</subject><subject>Structural stability</subject><subject>Synthesis</subject><subject>tolerance factor</subject><issn>0002-7820</issn><issn>1551-2916</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9kM1OwzAQhC0EEqVw4QkscUNKsR3HcY5VVf5UCQ5wthxnXblKk2A7QN8el3BmL7srfbOzGoSuKVnQVHc7bWBBJS-qEzSjRUEzVlFximaEEJaVkpFzdBHCLq20knyG-lfvOuMG3WJoYQ9dxA0Et-1wb_FW-w5iwLHH2hgIAYfoRxNHD2nStWtdPGDdNRi-DbTtUb13xvdf-hNw49JFE70zePD9AD46CJfozOo2wNVfn6P3-_Xb6jHbvDw8rZabzLCcVlkuSKmNpTUnVkDFipwLykXJBXAKgjGwVuS2LGsNEizjxhayqAw1ja5lnudzdDPdTdYfI4Sodv3ou2SpmCgkpzKXJFG3E5V-DsGDVYN3e-0PihJ1DFQdA1W_gSaYTvCXa-HwD6mel6v1pPkB3-N6fw</recordid><startdate>202207</startdate><enddate>202207</enddate><creator>Mei, Hongrong</creator><creator>Zhang, Liangbin</creator><creator>Chen, Feilong</creator><creator>Wang, Zhiguo</creator><creator>Rao, Zhenggang</creator><creator>Li, Chunchun</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0002-3657-5856</orcidid></search><sort><creationdate>202207</creationdate><title>Principal element design of garnets to access structure stability and excellent microwave dielectric properties</title><author>Mei, Hongrong ; Zhang, Liangbin ; Chen, Feilong ; Wang, Zhiguo ; Rao, Zhenggang ; Li, Chunchun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2319-3607acf1b40f6e925346146746e41e622eff63f77bae8ef24cf5859c1cdab8333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>average electronegativity difference</topic><topic>ceramic</topic><topic>Composition</topic><topic>Dielectric properties</topic><topic>Electronegativity</topic><topic>garnet</topic><topic>Garnets</topic><topic>Infrared radiation</topic><topic>Microstructural analysis</topic><topic>microwave dielectric properties</topic><topic>Structural analysis</topic><topic>Structural stability</topic><topic>Synthesis</topic><topic>tolerance factor</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mei, Hongrong</creatorcontrib><creatorcontrib>Zhang, Liangbin</creatorcontrib><creatorcontrib>Chen, Feilong</creatorcontrib><creatorcontrib>Wang, Zhiguo</creatorcontrib><creatorcontrib>Rao, Zhenggang</creatorcontrib><creatorcontrib>Li, Chunchun</creatorcontrib><collection>CrossRef</collection><collection>Ceramic Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the American Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mei, Hongrong</au><au>Zhang, Liangbin</au><au>Chen, Feilong</au><au>Wang, Zhiguo</au><au>Rao, Zhenggang</au><au>Li, Chunchun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Principal element design of garnets to access structure stability and excellent microwave dielectric properties</atitle><jtitle>Journal of the American Ceramic Society</jtitle><date>2022-07</date><risdate>2022</risdate><volume>105</volume><issue>7</issue><spage>4805</spage><epage>4814</epage><pages>4805-4814</pages><issn>0002-7820</issn><eissn>1551-2916</eissn><abstract>Guided by the tolerance factor and average electronegativity difference, two stable garnets with compositions Ca3BTiGe3O12 (B = Mg, Zn) were designed, synthesized followed by structural, and dielectric characterization. The phase purity and structural characteristics were analyzed using X‐ray, Rietveld refinement, and microstructural analysis through scanning electron microscopy. A cubic structure with an Ia‐3d space group was confirmed for synthesized compositions. A combination of microwave dielectric properties for both garnets suggested that Ca3MgTiGe3O12 ceramic possessed a much higher quality factor (Q × f) ∼ 84 000 ± 3000 GHz coupled by a higher dielectric constant (εr) ∼ 12.97 ± 0.03, and a smaller temperature coefficient of resonance frequency (τf) ∼ −29.4 ± 1.5 ppm/°C compared to its Zn counterpart (Q × f ∼ 45 000 ± 2000 GHz, εr ∼ 12.84 ± 0.03, and τf ∼ −33.19 ± 1.6 ppm/°C). Such differences in dielectric performances were further explored utilizing packing fraction, ion polarizability, bond valence, Raman, and infrared spectrum to understand structure–property relationship.</abstract><cop>Columbus</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1111/jace.18459</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-3657-5856</orcidid></addata></record> |
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| subjects | average electronegativity difference ceramic Composition Dielectric properties Electronegativity garnet Garnets Infrared radiation Microstructural analysis microwave dielectric properties Structural analysis Structural stability Synthesis tolerance factor |
| title | Principal element design of garnets to access structure stability and excellent microwave dielectric properties |
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