Preparation of Si-C-N-Fe magnetic ceramics from iron-containing polysilazane
文献类型：期刊论文
| 作者 | Li, YM; Zheng, ZM; Reng, CY; Zhang, ZJ; Gao, W; Yang, SY; Xie, ZM |
| 刊名 | APPLIED ORGANOMETALLIC CHEMISTRY
 |
| 出版日期 | 2003-02-01 |
| 卷号 | 17期号:2页码:120-126 |
| 关键词 | Polysilazane Containing Iron Ceramic Composite Magnetic Ceramics Precursor Pyrolysis Si-c-n-fe Iron Nitride |
| ISSN号 | 0268-2605 |
| DOI | 10.1002/aoc.400 |
| 英文摘要 | A new type of hyperbranched polysilazane containing iron (PSZI) compound was synthesized by the polycondensation of silazane lithium salts with FeCl3, and the structure of the PSZIs was investigated by IR, NMR and elemental analyses. The PSZIs were pyrolyzed under nitrogen, argon or NH3, and magnetic ceramics could be obtained. The ceramic yields of the PSZIs were higher than those of their corresponding silazanes, and the PSZIs or silazanes with reactive groups containing Si-H, -CH=CH2 or higher branched structures had higher yields. The magnetism of the ceramics could be controlled by a pyrolytic atmosphere and temperature: the saturation magnetization M, ranged from 20 to 100 emu g(-1) and coercivity H-c ranged from 463 to 50 Oe. The transformation of the magnetic loop of the PSZIs pyrolyzed at different temperatures under NH3 was quite different from those under nitrogen. It was shown by X-ray diffraction measurements that the magnetic crystalline form could exist as Fe4N, Fe(0) or Fe3N depending on temperature under NH3, but under a nitrogen atmosphere Fe(0) was nearly the only magnetic crystalline form from 600 to 1100degreesC. By dipping or spin-coating of the PSZI solution, then through pyrolysis under nitrogen, argon or NH3, thin uniform magnetic ceramic films could be fabricated on the substrates. Copyright (C) 2003 John Wiley Sons, Ltd. |
| 语种 | 英语 |
| WOS记录号 | WOS:000180745900004 |
| 出版者 | JOHN WILEY & SONS LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/80555]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Xie, ZM |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, State Key Lab Engn Plast, Ctr Mol Sci,Grp 404, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, YM,Zheng, ZM,Reng, CY,et al. Preparation of Si-C-N-Fe magnetic ceramics from iron-containing polysilazane[J]. APPLIED ORGANOMETALLIC CHEMISTRY,2003,17(2):120-126. |
| APA | Li, YM.,Zheng, ZM.,Reng, CY.,Zhang, ZJ.,Gao, W.,...&Xie, ZM.(2003).Preparation of Si-C-N-Fe magnetic ceramics from iron-containing polysilazane.APPLIED ORGANOMETALLIC CHEMISTRY,17(2),120-126. |
| MLA | Li, YM,et al."Preparation of Si-C-N-Fe magnetic ceramics from iron-containing polysilazane".APPLIED ORGANOMETALLIC CHEMISTRY 17.2(2003):120-126. |
入库方式： OAI收割
来源：化学研究所
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