Role of structure gradient region on dielectric properties in Ba(Zr,Ti)O3-KNbO3 nanocomposite ceramics
Crystal structures of KNbO3 (KN)/BaZrxTi1−xO3 [BZT, (0.1 ≤ x ≤ 1)] nanocomposite ceramics have been investigated using synchrotron radiation X-ray powder diffraction, where BZT nanoparticles thinly coated with KN crystals through the heteroepitaxial interface are sintered. The Rietveld analysis base...
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| Veröffentlicht in: | Japanese Journal of Applied Physics 2015-10, Vol.54 (10S) |
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| container_title | Japanese Journal of Applied Physics |
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| creator | Magome, Eisuke Kuroiwa, Yoshihiro Moriyoshi, Chikako Hirose, Yoshinobu Ueno, Shintaro Nakashima, Kouichi Wada, Satoshi |
| description | Crystal structures of KNbO3 (KN)/BaZrxTi1−xO3 [BZT, (0.1 ≤ x ≤ 1)] nanocomposite ceramics have been investigated using synchrotron radiation X-ray powder diffraction, where BZT nanoparticles thinly coated with KN crystals through the heteroepitaxial interface are sintered. The Rietveld analysis based on the multicomponent model reveals that the ceramic grain has the core/multishell structure consisting of a BZT core, distorted BZT and KN multishells. The variations of the volume ratio of the distorted BZT shell region corresponding to the structure gradient interface region and the dielectric property of the ceramics show similar trends as a function of x. From these results, we propose that the structure gradient region is electrically soft, and provides a crucial contribution to the dielectric properties of the nanocomposite ceramics. |
| doi_str_mv | 10.7567/JJAP.54.10NB04 |
| format | Article |
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The Rietveld analysis based on the multicomponent model reveals that the ceramic grain has the core/multishell structure consisting of a BZT core, distorted BZT and KN multishells. The variations of the volume ratio of the distorted BZT shell region corresponding to the structure gradient interface region and the dielectric property of the ceramics show similar trends as a function of x. From these results, we propose that the structure gradient region is electrically soft, and provides a crucial contribution to the dielectric properties of the nanocomposite ceramics.</description><identifier>ISSN: 0021-4922</identifier><identifier>EISSN: 1347-4065</identifier><identifier>DOI: 10.7567/JJAP.54.10NB04</identifier><identifier>CODEN: JJAPB6</identifier><language>eng</language><publisher>The Japan Society of Applied Physics</publisher><subject>Ceramics ; Crystal structure ; Dielectric properties ; Diffraction ; Distortion ; Nanocomposites ; Nanoparticles ; Synchrotron radiation</subject><ispartof>Japanese Journal of Applied Physics, 2015-10, Vol.54 (10S)</ispartof><rights>2015 The Japan Society of Applied Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.7567/JJAP.54.10NB04/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,776,780,27901,27902,53821,53868</link.rule.ids></links><search><creatorcontrib>Magome, Eisuke</creatorcontrib><creatorcontrib>Kuroiwa, Yoshihiro</creatorcontrib><creatorcontrib>Moriyoshi, Chikako</creatorcontrib><creatorcontrib>Hirose, Yoshinobu</creatorcontrib><creatorcontrib>Ueno, Shintaro</creatorcontrib><creatorcontrib>Nakashima, Kouichi</creatorcontrib><creatorcontrib>Wada, Satoshi</creatorcontrib><title>Role of structure gradient region on dielectric properties in Ba(Zr,Ti)O3-KNbO3 nanocomposite ceramics</title><title>Japanese Journal of Applied Physics</title><addtitle>Jpn. J. Appl. Phys</addtitle><description>Crystal structures of KNbO3 (KN)/BaZrxTi1−xO3 [BZT, (0.1 ≤ x ≤ 1)] nanocomposite ceramics have been investigated using synchrotron radiation X-ray powder diffraction, where BZT nanoparticles thinly coated with KN crystals through the heteroepitaxial interface are sintered. The Rietveld analysis based on the multicomponent model reveals that the ceramic grain has the core/multishell structure consisting of a BZT core, distorted BZT and KN multishells. The variations of the volume ratio of the distorted BZT shell region corresponding to the structure gradient interface region and the dielectric property of the ceramics show similar trends as a function of x. From these results, we propose that the structure gradient region is electrically soft, and provides a crucial contribution to the dielectric properties of the nanocomposite ceramics.</description><subject>Ceramics</subject><subject>Crystal structure</subject><subject>Dielectric properties</subject><subject>Diffraction</subject><subject>Distortion</subject><subject>Nanocomposites</subject><subject>Nanoparticles</subject><subject>Synchrotron radiation</subject><issn>0021-4922</issn><issn>1347-4065</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNotkM1LAzEQxYMoWKtXzzlWcWu-d3usxa9aWpF68RKyu7MlZbtZk-z_b0qFgeE93gyPH0K3lExzqfLH5XL-OZViSsn6iYgzNKJc5JkgSp6jESGMZmLG2CW6CmGfpJKCjlDz5VrArsEh-qGKgwe886a20EXsYWddh9Mk3UIVva1w710PPloI2Hb4yUx-_MPW3m149rEuNxx3pnOVO_Qu2Ai4Am8OtgrX6KIxbYCb_z1G3y_P28Vbttq8vi_mq8xSXsSsyYmiJWsoMaooOSkAGJtRxmtgOTFlUStS0rKuZ0ooUtBSyWSYAqRiqhaUj9Hk9DfV_B0gRH2woYK2NR24IWhapCtCBJUpen-KWtfrvRt8l4ppSvQRpj7C1FLoE0z-BxvpZso</recordid><startdate>201510</startdate><enddate>201510</enddate><creator>Magome, Eisuke</creator><creator>Kuroiwa, Yoshihiro</creator><creator>Moriyoshi, Chikako</creator><creator>Hirose, Yoshinobu</creator><creator>Ueno, Shintaro</creator><creator>Nakashima, Kouichi</creator><creator>Wada, Satoshi</creator><general>The Japan Society of Applied Physics</general><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>201510</creationdate><title>Role of structure gradient region on dielectric properties in Ba(Zr,Ti)O3-KNbO3 nanocomposite ceramics</title><author>Magome, Eisuke ; Kuroiwa, Yoshihiro ; Moriyoshi, Chikako ; Hirose, Yoshinobu ; Ueno, Shintaro ; Nakashima, Kouichi ; Wada, Satoshi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i138t-f7061b2f10a68b308ee229123de270ab8d60b1bdd9646081b6560ba8e5626d413</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Ceramics</topic><topic>Crystal structure</topic><topic>Dielectric properties</topic><topic>Diffraction</topic><topic>Distortion</topic><topic>Nanocomposites</topic><topic>Nanoparticles</topic><topic>Synchrotron radiation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Magome, Eisuke</creatorcontrib><creatorcontrib>Kuroiwa, Yoshihiro</creatorcontrib><creatorcontrib>Moriyoshi, Chikako</creatorcontrib><creatorcontrib>Hirose, Yoshinobu</creatorcontrib><creatorcontrib>Ueno, Shintaro</creatorcontrib><creatorcontrib>Nakashima, Kouichi</creatorcontrib><creatorcontrib>Wada, Satoshi</creatorcontrib><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Japanese Journal of Applied Physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Magome, Eisuke</au><au>Kuroiwa, Yoshihiro</au><au>Moriyoshi, Chikako</au><au>Hirose, Yoshinobu</au><au>Ueno, Shintaro</au><au>Nakashima, Kouichi</au><au>Wada, Satoshi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Role of structure gradient region on dielectric properties in Ba(Zr,Ti)O3-KNbO3 nanocomposite ceramics</atitle><jtitle>Japanese Journal of Applied Physics</jtitle><addtitle>Jpn. J. Appl. Phys</addtitle><date>2015-10</date><risdate>2015</risdate><volume>54</volume><issue>10S</issue><issn>0021-4922</issn><eissn>1347-4065</eissn><coden>JJAPB6</coden><abstract>Crystal structures of KNbO3 (KN)/BaZrxTi1−xO3 [BZT, (0.1 ≤ x ≤ 1)] nanocomposite ceramics have been investigated using synchrotron radiation X-ray powder diffraction, where BZT nanoparticles thinly coated with KN crystals through the heteroepitaxial interface are sintered. The Rietveld analysis based on the multicomponent model reveals that the ceramic grain has the core/multishell structure consisting of a BZT core, distorted BZT and KN multishells. The variations of the volume ratio of the distorted BZT shell region corresponding to the structure gradient interface region and the dielectric property of the ceramics show similar trends as a function of x. From these results, we propose that the structure gradient region is electrically soft, and provides a crucial contribution to the dielectric properties of the nanocomposite ceramics.</abstract><pub>The Japan Society of Applied Physics</pub><doi>10.7567/JJAP.54.10NB04</doi><tpages>5</tpages></addata></record> |
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| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | Ceramics Crystal structure Dielectric properties Diffraction Distortion Nanocomposites Nanoparticles Synchrotron radiation |
| title | Role of structure gradient region on dielectric properties in Ba(Zr,Ti)O3-KNbO3 nanocomposite ceramics |
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