Fabrication of Textured Hematite by Magnetic Field-Assisted Colloidal Processing and Characterization of Its Anisotropic Properties
| Project/Area Number |
23560812
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
UCHIKOSHI Tetsuo 独立行政法人物質・材料研究機構, 先端材料プロセスユニット, グループリーダー (90354216)
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| Co-Investigator(Kenkyū-buntansha) |
SUZUKI Tohru 独立行政法人物質・材料研究機構, 先端材料プロセスユニット, 主席研究員 (50267407)
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| Co-Investigator(Renkei-kenkyūsha) |
SAKKA Yoshio 独立行政法人物質・材料研究機構, 先端材料プロセスユニット, ユニット長 (00354217)
SHIRAHATA Naoto 独立行政法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, MANA独立研究者 (80421428)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | ヘマタイト / ゲーサイト / 強磁場 / 配向 / コロイドプロセス / 異方性 |
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| Research Abstract |
Anisotropic properties of textured hematite bulk ceramics prepared by a magnetic field-assisted colloidal processing were investigated. Aqueous suspension of goethite was consolidated in a 2-6.5 T strong magnetic field to fabricate oriented goethite green bodies, then they were heated in air at 1200 degree C to obtain dense, textured hematite bulk ceramics. During the process, the a,b-axes of goethite was inherited to the c-axis of hematite via a topotactic phase transformation. The textured hematite exhibited anisotropic magnetic and mechanical properties; however, no obvious anisotropic electric and photoelectrochemical properties.
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Report
(4 results)
Research Products
(36 results)
