Kanpei NISHIOKA, Yu YAMAMOTO, Masakuni TAKAHASHI, Jun KANO, Tatsuo FUJII
{"title":"在c轴方向上拉长的针状六方铁素体颗粒的制备尝试","authors":"Kanpei NISHIOKA, Yu YAMAMOTO, Masakuni TAKAHASHI, Jun KANO, Tatsuo FUJII","doi":"10.2497/jjspm.23-00019","DOIUrl":null,"url":null,"abstract":"Barium ferrite particles were synthesized from acicular α-Fe2O3 particles grown in the c-axis direction. The synthesis was carried out by the flux method, in which acicular α-Fe2O3 particles reacted with BaCO3 in NaCO3 flux. The acicular-shaped BaFe12O19 particles grown in the c-axis direction were obtained. The acicular shape consisted of aggregates of plate-like particles stacked along the c-axis. The platelet-shaped BaFe12O19 particles prepared from spherical α-Fe2O3 under the same synthesis conditions exhibited a smaller coercivity than the acicular BaFe12O19 particles synthesized in this study. Therefore, it can be inferred that the shape anisotropy has an effect on the magnetic properties of the acicular particles.","PeriodicalId":35600,"journal":{"name":"Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy","volume":"66 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Attempt for Fabrication of Acicular Hexagonal Ferrite Particles Elongated in the c-axis Direction\",\"authors\":\"Kanpei NISHIOKA, Yu YAMAMOTO, Masakuni TAKAHASHI, Jun KANO, Tatsuo FUJII\",\"doi\":\"10.2497/jjspm.23-00019\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Barium ferrite particles were synthesized from acicular α-Fe2O3 particles grown in the c-axis direction. The synthesis was carried out by the flux method, in which acicular α-Fe2O3 particles reacted with BaCO3 in NaCO3 flux. The acicular-shaped BaFe12O19 particles grown in the c-axis direction were obtained. The acicular shape consisted of aggregates of plate-like particles stacked along the c-axis. The platelet-shaped BaFe12O19 particles prepared from spherical α-Fe2O3 under the same synthesis conditions exhibited a smaller coercivity than the acicular BaFe12O19 particles synthesized in this study. Therefore, it can be inferred that the shape anisotropy has an effect on the magnetic properties of the acicular particles.\",\"PeriodicalId\":35600,\"journal\":{\"name\":\"Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy\",\"volume\":\"66 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-09-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2497/jjspm.23-00019\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Materials Science\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2497/jjspm.23-00019","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Materials Science","Score":null,"Total":0}
Attempt for Fabrication of Acicular Hexagonal Ferrite Particles Elongated in the c-axis Direction
Barium ferrite particles were synthesized from acicular α-Fe2O3 particles grown in the c-axis direction. The synthesis was carried out by the flux method, in which acicular α-Fe2O3 particles reacted with BaCO3 in NaCO3 flux. The acicular-shaped BaFe12O19 particles grown in the c-axis direction were obtained. The acicular shape consisted of aggregates of plate-like particles stacked along the c-axis. The platelet-shaped BaFe12O19 particles prepared from spherical α-Fe2O3 under the same synthesis conditions exhibited a smaller coercivity than the acicular BaFe12O19 particles synthesized in this study. Therefore, it can be inferred that the shape anisotropy has an effect on the magnetic properties of the acicular particles.