Structural Transformation of Hexagonal (0001)BaTiO3 Ceramics to Tetragonal (111)BaTiO3 Ceramics
A ceramic slurry that contains a 6H-type Ba(Ti 0.95 Mn 0.05 )O 3 powder was casted into a plaster mold under 10 T magnetic field to form a green compact of (0001)-oriented Ba(Ti 0.95 Mn 0.05 )O 3 . After sintering the green compact at 1300 °C in air, it was confirmed that the (0001)-oriented 6H-type...
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| Veröffentlicht in: | Jpn J Appl Phys 2011-09, Vol.50 (9), p.09ND01-09ND01-4 |
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| container_title | Jpn J Appl Phys |
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| creator | Watanabe, Takayuki Shimada, Mikio Aiba, Toshiaki Yabuta, Hisato Miura, Kaoru Oka, Kengo Azuma, Masaki Wada, Satoshi Kumada, Nobuhiro |
| description | A ceramic slurry that contains a 6H-type Ba(Ti 0.95 Mn 0.05 )O 3 powder was casted into a plaster mold under 10 T magnetic field to form a green compact of (0001)-oriented Ba(Ti 0.95 Mn 0.05 )O 3 . After sintering the green compact at 1300 °C in air, it was confirmed that the (0001)-oriented 6H-type perovskite structure transformed to a (111)-oriented 3C-type perovskite structure. The structural transformation was again examined using hexagonal BaTiO 3 prepared by reducing pseudo-cubic BaTiO 3 powder in H 2 atmosphere. In this case, the preferred (0001) orientation was not confirmed for the green compacts. After sintering the green compacts at 1300 °C in air, mixed crystal orientations of (100)/(001) and (111) were observed for the resultant tetragonal BaTiO 3 ceramics. This (100)/(001) orientation was suppressed by annealing the hexagonal BaTiO 3 powder at 1000 °C before slip-casting, leading to highly (111)-oriented ceramics. It was found that the green compacts of (0001)-oriented hexagonal BaTiO 3 can transform into (111)-oriented tetragonal BaTiO 3 ceramics, maintaining the macroscopic crystal orientations due to a similar atomic stacking along [0001] of 6H-type BaTiO 3 and [111] of 3C-type BaTiO 3 . |
| doi_str_mv | 10.1143/JJAP.50.09ND01 |
| format | Article |
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After sintering the green compact at 1300 °C in air, it was confirmed that the (0001)-oriented 6H-type perovskite structure transformed to a (111)-oriented 3C-type perovskite structure. The structural transformation was again examined using hexagonal BaTiO 3 prepared by reducing pseudo-cubic BaTiO 3 powder in H 2 atmosphere. In this case, the preferred (0001) orientation was not confirmed for the green compacts. After sintering the green compacts at 1300 °C in air, mixed crystal orientations of (100)/(001) and (111) were observed for the resultant tetragonal BaTiO 3 ceramics. This (100)/(001) orientation was suppressed by annealing the hexagonal BaTiO 3 powder at 1000 °C before slip-casting, leading to highly (111)-oriented ceramics. It was found that the green compacts of (0001)-oriented hexagonal BaTiO 3 can transform into (111)-oriented tetragonal BaTiO 3 ceramics, maintaining the macroscopic crystal orientations due to a similar atomic stacking along [0001] of 6H-type BaTiO 3 and [111] of 3C-type BaTiO 3 .</description><identifier>ISSN: 0021-4922</identifier><identifier>EISSN: 1347-4065</identifier><identifier>DOI: 10.1143/JJAP.50.09ND01</identifier><language>eng</language><publisher>The Japan Society of Applied Physics</publisher><ispartof>Jpn J Appl Phys, 2011-09, Vol.50 (9), p.09ND01-09ND01-4</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></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><creatorcontrib>Watanabe, Takayuki</creatorcontrib><creatorcontrib>Shimada, Mikio</creatorcontrib><creatorcontrib>Aiba, Toshiaki</creatorcontrib><creatorcontrib>Yabuta, Hisato</creatorcontrib><creatorcontrib>Miura, Kaoru</creatorcontrib><creatorcontrib>Oka, Kengo</creatorcontrib><creatorcontrib>Azuma, Masaki</creatorcontrib><creatorcontrib>Wada, Satoshi</creatorcontrib><creatorcontrib>Kumada, Nobuhiro</creatorcontrib><title>Structural Transformation of Hexagonal (0001)BaTiO3 Ceramics to Tetragonal (111)BaTiO3 Ceramics</title><title>Jpn J Appl Phys</title><description>A ceramic slurry that contains a 6H-type Ba(Ti 0.95 Mn 0.05 )O 3 powder was casted into a plaster mold under 10 T magnetic field to form a green compact of (0001)-oriented Ba(Ti 0.95 Mn 0.05 )O 3 . After sintering the green compact at 1300 °C in air, it was confirmed that the (0001)-oriented 6H-type perovskite structure transformed to a (111)-oriented 3C-type perovskite structure. The structural transformation was again examined using hexagonal BaTiO 3 prepared by reducing pseudo-cubic BaTiO 3 powder in H 2 atmosphere. In this case, the preferred (0001) orientation was not confirmed for the green compacts. After sintering the green compacts at 1300 °C in air, mixed crystal orientations of (100)/(001) and (111) were observed for the resultant tetragonal BaTiO 3 ceramics. This (100)/(001) orientation was suppressed by annealing the hexagonal BaTiO 3 powder at 1000 °C before slip-casting, leading to highly (111)-oriented ceramics. It was found that the green compacts of (0001)-oriented hexagonal BaTiO 3 can transform into (111)-oriented tetragonal BaTiO 3 ceramics, maintaining the macroscopic crystal orientations due to a similar atomic stacking along [0001] of 6H-type BaTiO 3 and [111] of 3C-type BaTiO 3 .</description><issn>0021-4922</issn><issn>1347-4065</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid/><recordid>eNplkE1Lw0AURQdRMFa3rrNUIfG9N5lJZlnrRy3FCsb18DKZSKRtyiQF_fe2VFeuLpd7uIsjxCVCipjJ29ls_JoqSMG83AMeiQhllicZaHUsIgDCJDNEp-Ks7z93VasMI2HfhrB1wzbwMi4Dr_umCyse2m4dd0089V_80a132xUA4PUdl-1CxhMfeNW6Ph66uPRD-GMQ_yHn4qThZe8vfnMk3h8fysk0mS-enifjedJKgCGpiJTX7I1XhZM11kbVmrigOtN5lRvpna8MaV_U2tRE3jE10BCjdqSB5UjcHH7bDW_sJrQrDt8Wwe7V2L0aq8Ae1MgfwGhVgQ</recordid><startdate>20110901</startdate><enddate>20110901</enddate><creator>Watanabe, Takayuki</creator><creator>Shimada, Mikio</creator><creator>Aiba, Toshiaki</creator><creator>Yabuta, Hisato</creator><creator>Miura, Kaoru</creator><creator>Oka, Kengo</creator><creator>Azuma, Masaki</creator><creator>Wada, Satoshi</creator><creator>Kumada, Nobuhiro</creator><general>The Japan Society of Applied Physics</general><scope/></search><sort><creationdate>20110901</creationdate><title>Structural Transformation of Hexagonal (0001)BaTiO3 Ceramics to Tetragonal (111)BaTiO3 Ceramics</title><author>Watanabe, Takayuki ; Shimada, Mikio ; Aiba, Toshiaki ; Yabuta, Hisato ; Miura, Kaoru ; Oka, Kengo ; Azuma, Masaki ; Wada, Satoshi ; Kumada, Nobuhiro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i300t-b225e6ae9e58c3d1d95d62a82d467b793eceb926e8d69d22eca2f0f2a16c260a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Watanabe, Takayuki</creatorcontrib><creatorcontrib>Shimada, Mikio</creatorcontrib><creatorcontrib>Aiba, Toshiaki</creatorcontrib><creatorcontrib>Yabuta, Hisato</creatorcontrib><creatorcontrib>Miura, Kaoru</creatorcontrib><creatorcontrib>Oka, Kengo</creatorcontrib><creatorcontrib>Azuma, Masaki</creatorcontrib><creatorcontrib>Wada, Satoshi</creatorcontrib><creatorcontrib>Kumada, Nobuhiro</creatorcontrib><jtitle>Jpn J Appl Phys</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Watanabe, Takayuki</au><au>Shimada, Mikio</au><au>Aiba, Toshiaki</au><au>Yabuta, Hisato</au><au>Miura, Kaoru</au><au>Oka, Kengo</au><au>Azuma, Masaki</au><au>Wada, Satoshi</au><au>Kumada, Nobuhiro</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Structural Transformation of Hexagonal (0001)BaTiO3 Ceramics to Tetragonal (111)BaTiO3 Ceramics</atitle><jtitle>Jpn J Appl Phys</jtitle><date>2011-09-01</date><risdate>2011</risdate><volume>50</volume><issue>9</issue><spage>09ND01</spage><epage>09ND01-4</epage><pages>09ND01-09ND01-4</pages><issn>0021-4922</issn><eissn>1347-4065</eissn><abstract>A ceramic slurry that contains a 6H-type Ba(Ti 0.95 Mn 0.05 )O 3 powder was casted into a plaster mold under 10 T magnetic field to form a green compact of (0001)-oriented Ba(Ti 0.95 Mn 0.05 )O 3 . After sintering the green compact at 1300 °C in air, it was confirmed that the (0001)-oriented 6H-type perovskite structure transformed to a (111)-oriented 3C-type perovskite structure. The structural transformation was again examined using hexagonal BaTiO 3 prepared by reducing pseudo-cubic BaTiO 3 powder in H 2 atmosphere. In this case, the preferred (0001) orientation was not confirmed for the green compacts. After sintering the green compacts at 1300 °C in air, mixed crystal orientations of (100)/(001) and (111) were observed for the resultant tetragonal BaTiO 3 ceramics. This (100)/(001) orientation was suppressed by annealing the hexagonal BaTiO 3 powder at 1000 °C before slip-casting, leading to highly (111)-oriented ceramics. It was found that the green compacts of (0001)-oriented hexagonal BaTiO 3 can transform into (111)-oriented tetragonal BaTiO 3 ceramics, maintaining the macroscopic crystal orientations due to a similar atomic stacking along [0001] of 6H-type BaTiO 3 and [111] of 3C-type BaTiO 3 .</abstract><pub>The Japan Society of Applied Physics</pub><doi>10.1143/JJAP.50.09ND01</doi></addata></record> |
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| source | Institute of Physics Journals |
| title | Structural Transformation of Hexagonal (0001)BaTiO3 Ceramics to Tetragonal (111)BaTiO3 Ceramics |
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