Investigations of BaFe0.5Nb0.5O3 nano powders prepared by a low temperature aqueous synthesis and resulting ceramics
A facile method to prepare nanoscaled BaFe0.5Nb0.5O3 via synthesis in boiling NaOH solution is described herein. The nano-crystalline powder has a high specific surface area of 55m2g−1 and a crystallite size of 15nm. The as-prepared powder does not show any significant crystallite growth up to 700°C...
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| Veröffentlicht in: | Journal of the European Ceramic Society 2017-04, Vol.37 (4), p.1509-1516 |
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| container_title | Journal of the European Ceramic Society |
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| creator | Köferstein, Roberto Ebbinghaus, Stefan G. |
| description | A facile method to prepare nanoscaled BaFe0.5Nb0.5O3 via synthesis in boiling NaOH solution is described herein. The nano-crystalline powder has a high specific surface area of 55m2g−1 and a crystallite size of 15nm. The as-prepared powder does not show any significant crystallite growth up to 700°C. The activation energy of the crystallite growth process was calculated as 590kJmol−1. Dense ceramics can be obtained either after sintering at 1200°C for 1h or after two-step sintering at 1000°C for 10h. The average grain sizes of ceramic bodies can be tuned between 0.23μm and 12μm. The thermal expansion coefficient was determined as 11.4(3)·10−6K−1. The optical band gap varies between 2.90(5) and 2.63(3)eV. Magnetic measurements gave a Néel temperature of 20K. Depending on the sintering regime, the ceramic samples reach permittivity values between 2800 and 137,000 at RT and 1kHz. |
| doi_str_mv | 10.1016/j.jeurceramsoc.2016.12.014 |
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The nano-crystalline powder has a high specific surface area of 55m2g−1 and a crystallite size of 15nm. The as-prepared powder does not show any significant crystallite growth up to 700°C. The activation energy of the crystallite growth process was calculated as 590kJmol−1. Dense ceramics can be obtained either after sintering at 1200°C for 1h or after two-step sintering at 1000°C for 10h. The average grain sizes of ceramic bodies can be tuned between 0.23μm and 12μm. The thermal expansion coefficient was determined as 11.4(3)·10−6K−1. The optical band gap varies between 2.90(5) and 2.63(3)eV. Magnetic measurements gave a Néel temperature of 20K. Depending on the sintering regime, the ceramic samples reach permittivity values between 2800 and 137,000 at RT and 1kHz.</description><identifier>ISSN: 0955-2219</identifier><identifier>EISSN: 1873-619X</identifier><identifier>DOI: 10.1016/j.jeurceramsoc.2016.12.014</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Barium iron niobate ; Ceramics ; Chemical Sciences ; Inorganic chemistry ; Magnetism ; Material chemistry ; Nano-particles ; Permittivity ; Perovskites</subject><ispartof>Journal of the European Ceramic Society, 2017-04, Vol.37 (4), p.1509-1516</ispartof><rights>2016 Elsevier Ltd</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c410t-4fc264e4e97b1ffefe185dcf22c5da66abd1ce0566b7a0045af237dc1d6364393</citedby><cites>FETCH-LOGICAL-c410t-4fc264e4e97b1ffefe185dcf22c5da66abd1ce0566b7a0045af237dc1d6364393</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jeurceramsoc.2016.12.014$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,314,780,784,885,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://hal.science/hal-01990173$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Köferstein, Roberto</creatorcontrib><creatorcontrib>Ebbinghaus, Stefan G.</creatorcontrib><title>Investigations of BaFe0.5Nb0.5O3 nano powders prepared by a low temperature aqueous synthesis and resulting ceramics</title><title>Journal of the European Ceramic Society</title><description>A facile method to prepare nanoscaled BaFe0.5Nb0.5O3 via synthesis in boiling NaOH solution is described herein. The nano-crystalline powder has a high specific surface area of 55m2g−1 and a crystallite size of 15nm. The as-prepared powder does not show any significant crystallite growth up to 700°C. The activation energy of the crystallite growth process was calculated as 590kJmol−1. Dense ceramics can be obtained either after sintering at 1200°C for 1h or after two-step sintering at 1000°C for 10h. The average grain sizes of ceramic bodies can be tuned between 0.23μm and 12μm. The thermal expansion coefficient was determined as 11.4(3)·10−6K−1. The optical band gap varies between 2.90(5) and 2.63(3)eV. Magnetic measurements gave a Néel temperature of 20K. Depending on the sintering regime, the ceramic samples reach permittivity values between 2800 and 137,000 at RT and 1kHz.</description><subject>Barium iron niobate</subject><subject>Ceramics</subject><subject>Chemical Sciences</subject><subject>Inorganic chemistry</subject><subject>Magnetism</subject><subject>Material chemistry</subject><subject>Nano-particles</subject><subject>Permittivity</subject><subject>Perovskites</subject><issn>0955-2219</issn><issn>1873-619X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqNkEFv2zAMhYWhBZam-w_CbjvYFWVbrnrLsrUpELSXFuhNkCWqVZBYniSnyL-fsxTDjruQAPHeI_kR8hVYCQzE1abc4BgNRr1LwZR8mpXASwb1JzKD67YqBMiXMzJjsmkKzkF-JhcpbRiDlkk5I_m-32PK_lVnH_pEg6Pf9S2ysnnopvJY0V73gQ7h3WJMdIg46IiWdgeq6Ta804y7YVqfx4hU_xoxjImmQ5_fMPlEdW9pxDRus-9f6Z87vUmX5NzpbcIvH31Onm9_Pi1Xxfrx7n65WBemBpaL2hkuaqxRth04hw7hurHGcW4aq4XQnQWDrBGiazVjdaMdr1prwIpK1JWs5uTbKfdNb9UQ_U7Hgwraq9VirY4zBlJOJKo9TNqbk9bEkFJE99cATB1Zq436l7U6slbAp4x6Mv84mXH6Zu8xqmQ89gatj2iyssH_T8xvYi6QyQ</recordid><startdate>20170401</startdate><enddate>20170401</enddate><creator>Köferstein, Roberto</creator><creator>Ebbinghaus, Stefan G.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>VOOES</scope></search><sort><creationdate>20170401</creationdate><title>Investigations of BaFe0.5Nb0.5O3 nano powders prepared by a low temperature aqueous synthesis and resulting ceramics</title><author>Köferstein, Roberto ; Ebbinghaus, Stefan G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c410t-4fc264e4e97b1ffefe185dcf22c5da66abd1ce0566b7a0045af237dc1d6364393</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Barium iron niobate</topic><topic>Ceramics</topic><topic>Chemical Sciences</topic><topic>Inorganic chemistry</topic><topic>Magnetism</topic><topic>Material chemistry</topic><topic>Nano-particles</topic><topic>Permittivity</topic><topic>Perovskites</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Köferstein, Roberto</creatorcontrib><creatorcontrib>Ebbinghaus, Stefan G.</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><jtitle>Journal of the European Ceramic Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Köferstein, Roberto</au><au>Ebbinghaus, Stefan G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Investigations of BaFe0.5Nb0.5O3 nano powders prepared by a low temperature aqueous synthesis and resulting ceramics</atitle><jtitle>Journal of the European Ceramic Society</jtitle><date>2017-04-01</date><risdate>2017</risdate><volume>37</volume><issue>4</issue><spage>1509</spage><epage>1516</epage><pages>1509-1516</pages><issn>0955-2219</issn><eissn>1873-619X</eissn><abstract>A facile method to prepare nanoscaled BaFe0.5Nb0.5O3 via synthesis in boiling NaOH solution is described herein. The nano-crystalline powder has a high specific surface area of 55m2g−1 and a crystallite size of 15nm. The as-prepared powder does not show any significant crystallite growth up to 700°C. The activation energy of the crystallite growth process was calculated as 590kJmol−1. Dense ceramics can be obtained either after sintering at 1200°C for 1h or after two-step sintering at 1000°C for 10h. The average grain sizes of ceramic bodies can be tuned between 0.23μm and 12μm. The thermal expansion coefficient was determined as 11.4(3)·10−6K−1. The optical band gap varies between 2.90(5) and 2.63(3)eV. Magnetic measurements gave a Néel temperature of 20K. Depending on the sintering regime, the ceramic samples reach permittivity values between 2800 and 137,000 at RT and 1kHz.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.jeurceramsoc.2016.12.014</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Barium iron niobate Ceramics Chemical Sciences Inorganic chemistry Magnetism Material chemistry Nano-particles Permittivity Perovskites |
| title | Investigations of BaFe0.5Nb0.5O3 nano powders prepared by a low temperature aqueous synthesis and resulting ceramics |
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