| Formation of crystalline MnFe2O4 powder by flame-combusting freeze-dried citrate precursors | |
|---|---|
| 學年 | 93 |
| 學期 | 2 |
| 出版（發表）日期 | 2005-05-01 |
| 作品名稱 | Formation of crystalline MnFe2O4 powder by flame-combusting freeze-dried citrate precursors |
| 作品名稱（其他語言） | |
| 著者 | 余宣賦; Yu, Hsuan-fu; 楊尚偉; Yang, Shang-wei |
| 單位 | 淡江大學化學工程與材料工程學系 |
| 出版者 | Elsevier |
| 著錄名稱、卷期、頁數 | Journal of Alloys and Compounds 394(1-2), pp.286-291 |
| 摘要 | Crystalline MnFe2O4 particles with particle sizes in submicrometers were produced by flame-combusting the freeze-dried citrate precursors. Aqueous solutions of nitrates, containing Fe3+ and Mn2+ chelated by citric acid and with controlled pH using NH4OH additions, were freeze-dried. The freeze-dried citrate precursors were then thermally treated by combustion using a butane-induced flame, to decompose organic constituents and to form ferrites. The resultant particles were characterized using XRD, TG, DSC, FT-IR, SEM, and SQUID. At pH ≥ 3, the flame-combusted specimens were composed of crystalline MnFe2O4 with average crystallite sizes of 28.5 ± 1.2 nm and exhibited magnetic characteristics of 48.7 ± 1.5 emu/g in magnetization measured at 1.5 kOe, 13.4 ± 0.2 emu/g in remanence magnetization, and 55.7 ± 3.9 Oe in coercive force. |
| 關鍵字 | Flame combustion;Magnetic measurement;Citrate precursor;Chemical synthesis;Thermal analysis |
| 語言 | en |
| ISSN | 0925-8388 |
| 期刊性質 | 國外 |
| 收錄於 | |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | NLD |
| 公開徵稿 | |
| 出版型式 | ,紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/44117 ) |
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