Effect of oxygen vacancies on intrinsic dielectric permittivity of strontium titanate ceramics
We prepared oxygen-deficient strontium titanate ceramics and measured the THz dielectric spectra to discuss the effect of oxygen vacancies on the intrinsic dielectric permittivity. In the presence of oxygen vacancies, the lattice volume of strontium titanate increased. First-principles calculation r...
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| Veröffentlicht in: | Journal of the Ceramic Society of Japan 2018/05/01, Vol.126(5), pp.263-268 |
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| container_end_page | 268 |
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| container_issue | 5 |
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| container_title | Journal of the Ceramic Society of Japan |
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| creator | HOSHINA, Takuya SASE, Ryuichi NISHIYAMA, Junji TAKEDA, Hiroaki TSURUMI, Takaaki |
| description | We prepared oxygen-deficient strontium titanate ceramics and measured the THz dielectric spectra to discuss the effect of oxygen vacancies on the intrinsic dielectric permittivity. In the presence of oxygen vacancies, the lattice volume of strontium titanate increased. First-principles calculation revealed that the expansion of the lattice originated from repulsion between the oxygen vacancies and cations, causing a decrease in the covalency of the Ti–O bonding. THz dielectric measurement using a far-infrared spectroscopic ellipsometer made it clear that the Slater-type phonon mode hardened and then the intrinsic permittivity of strontium titanate decreased in the presence of oxygen vacancies. |
| doi_str_mv | 10.2109/jcersj2.17250 |
| format | Article |
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In the presence of oxygen vacancies, the lattice volume of strontium titanate increased. First-principles calculation revealed that the expansion of the lattice originated from repulsion between the oxygen vacancies and cations, causing a decrease in the covalency of the Ti–O bonding. THz dielectric measurement using a far-infrared spectroscopic ellipsometer made it clear that the Slater-type phonon mode hardened and then the intrinsic permittivity of strontium titanate decreased in the presence of oxygen vacancies.</description><identifier>ISSN: 1882-0743</identifier><identifier>EISSN: 1348-6535</identifier><identifier>DOI: 10.2109/jcersj2.17250</identifier><language>eng</language><publisher>Tokyo: The Ceramic Society of Japan</publisher><subject>Ceramics ; Dielectric property ; Dielectrics ; Electricity ; Ellipsometer ; Far infrared radiation ; First principles ; First-principles calculation ; Ionic polarization ; Lattice vacancies ; Oxygen ; Oxygen vacancy ; Permittivity ; Strontium titanate ; Strontium titanates ; THz response</subject><ispartof>Journal of the Ceramic Society of Japan, 2018/05/01, Vol.126(5), pp.263-268</ispartof><rights>2018 The Ceramic Society of Japan</rights><rights>Copyright Japan Science and Technology Agency 2018</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c533t-82aa019cf858dc26731a0fd52580169985e3b6ab46b8271a596c20fe4d377a7a3</citedby><cites>FETCH-LOGICAL-c533t-82aa019cf858dc26731a0fd52580169985e3b6ab46b8271a596c20fe4d377a7a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,777,781,1877,27905,27906</link.rule.ids></links><search><creatorcontrib>HOSHINA, Takuya</creatorcontrib><creatorcontrib>SASE, Ryuichi</creatorcontrib><creatorcontrib>NISHIYAMA, Junji</creatorcontrib><creatorcontrib>TAKEDA, Hiroaki</creatorcontrib><creatorcontrib>TSURUMI, Takaaki</creatorcontrib><title>Effect of oxygen vacancies on intrinsic dielectric permittivity of strontium titanate ceramics</title><title>Journal of the Ceramic Society of Japan</title><addtitle>J. Ceram. Soc. Japan</addtitle><description>We prepared oxygen-deficient strontium titanate ceramics and measured the THz dielectric spectra to discuss the effect of oxygen vacancies on the intrinsic dielectric permittivity. In the presence of oxygen vacancies, the lattice volume of strontium titanate increased. First-principles calculation revealed that the expansion of the lattice originated from repulsion between the oxygen vacancies and cations, causing a decrease in the covalency of the Ti–O bonding. THz dielectric measurement using a far-infrared spectroscopic ellipsometer made it clear that the Slater-type phonon mode hardened and then the intrinsic permittivity of strontium titanate decreased in the presence of oxygen vacancies.</description><subject>Ceramics</subject><subject>Dielectric property</subject><subject>Dielectrics</subject><subject>Electricity</subject><subject>Ellipsometer</subject><subject>Far infrared radiation</subject><subject>First principles</subject><subject>First-principles calculation</subject><subject>Ionic polarization</subject><subject>Lattice vacancies</subject><subject>Oxygen</subject><subject>Oxygen vacancy</subject><subject>Permittivity</subject><subject>Strontium titanate</subject><subject>Strontium titanates</subject><subject>THz response</subject><issn>1882-0743</issn><issn>1348-6535</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNpFkMtLAzEQxoMoWKtH7wHPW_PYZLNHKfUBBS96NUyzSc3SzdYkLfa_d_ugXmY-mN83M3wI3VMyYZTUj62xMbVsQismyAUaUV6qQgouLgetFCtIVfJrdJNSS4hkJVcj9DVzzpqMe4f7393SBrwFA8F4m3AfsA85-pC8wY23qwGMg1zb2Pmc_dbn3d6YcuxD9psOZ58hQLZ4-AQ6b9ItunKwSvbu1Mfo83n2MX0t5u8vb9OneWEE57lQDIDQ2jglVGOYrDgF4hrBhCJU1rUSli8kLEq5UKyiIGppGHG2bHhVQQV8jB6Oe9ex_9nYlHXbb2IYTmpGeFlTqmo6UMWRMrFPKVqn19F3EHeaEr2PUJ8i1IcIB3525NuUYWnPNMTszcr-00xqcagH33luviFqG_gfUxp_OQ</recordid><startdate>20180501</startdate><enddate>20180501</enddate><creator>HOSHINA, Takuya</creator><creator>SASE, Ryuichi</creator><creator>NISHIYAMA, Junji</creator><creator>TAKEDA, Hiroaki</creator><creator>TSURUMI, Takaaki</creator><general>The Ceramic Society of Japan</general><general>Japan Science and Technology Agency</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QQ</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20180501</creationdate><title>Effect of oxygen vacancies on intrinsic dielectric permittivity of strontium titanate ceramics</title><author>HOSHINA, Takuya ; SASE, Ryuichi ; NISHIYAMA, Junji ; TAKEDA, Hiroaki ; TSURUMI, Takaaki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c533t-82aa019cf858dc26731a0fd52580169985e3b6ab46b8271a596c20fe4d377a7a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Ceramics</topic><topic>Dielectric property</topic><topic>Dielectrics</topic><topic>Electricity</topic><topic>Ellipsometer</topic><topic>Far infrared radiation</topic><topic>First principles</topic><topic>First-principles calculation</topic><topic>Ionic polarization</topic><topic>Lattice vacancies</topic><topic>Oxygen</topic><topic>Oxygen vacancy</topic><topic>Permittivity</topic><topic>Strontium titanate</topic><topic>Strontium titanates</topic><topic>THz response</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>HOSHINA, Takuya</creatorcontrib><creatorcontrib>SASE, Ryuichi</creatorcontrib><creatorcontrib>NISHIYAMA, Junji</creatorcontrib><creatorcontrib>TAKEDA, Hiroaki</creatorcontrib><creatorcontrib>TSURUMI, Takaaki</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 Ceramic Society of Japan</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>HOSHINA, Takuya</au><au>SASE, Ryuichi</au><au>NISHIYAMA, Junji</au><au>TAKEDA, Hiroaki</au><au>TSURUMI, Takaaki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of oxygen vacancies on intrinsic dielectric permittivity of strontium titanate ceramics</atitle><jtitle>Journal of the Ceramic Society of Japan</jtitle><addtitle>J. Ceram. Soc. Japan</addtitle><date>2018-05-01</date><risdate>2018</risdate><volume>126</volume><issue>5</issue><spage>263</spage><epage>268</epage><pages>263-268</pages><issn>1882-0743</issn><eissn>1348-6535</eissn><abstract>We prepared oxygen-deficient strontium titanate ceramics and measured the THz dielectric spectra to discuss the effect of oxygen vacancies on the intrinsic dielectric permittivity. In the presence of oxygen vacancies, the lattice volume of strontium titanate increased. First-principles calculation revealed that the expansion of the lattice originated from repulsion between the oxygen vacancies and cations, causing a decrease in the covalency of the Ti–O bonding. THz dielectric measurement using a far-infrared spectroscopic ellipsometer made it clear that the Slater-type phonon mode hardened and then the intrinsic permittivity of strontium titanate decreased in the presence of oxygen vacancies.</abstract><cop>Tokyo</cop><pub>The Ceramic Society of Japan</pub><doi>10.2109/jcersj2.17250</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of the Ceramic Society of Japan, 2018/05/01, Vol.126(5), pp.263-268 |
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| subjects | Ceramics Dielectric property Dielectrics Electricity Ellipsometer Far infrared radiation First principles First-principles calculation Ionic polarization Lattice vacancies Oxygen Oxygen vacancy Permittivity Strontium titanate Strontium titanates THz response |
| title | Effect of oxygen vacancies on intrinsic dielectric permittivity of strontium titanate ceramics |
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