Microwave-induced combustion synthesis of Li0.5Fe2.5-xMnxO4 powder and their characterization

被引：14
作者：
Fu, YP [1 ]
Hsu, CS
机构：
[1] Wu Feng Inst Technol, Dept Chem Engn, Chiayi 621, Taiwan
[2] Ind Technol Res Inst, Union Chem Labs, Hsinchu 300, Taiwan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 391卷 / 1-2期
关键词：
lithium ferrite; microwave-induced combustion synthesis; saturation magnetization;
D O I：
10.1016/j.jallcom.2004.07.080
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Li0.5Fe2.5-xMnxO4 (0 <= x <= 1.0) powders with small and uniformly sized particles were successfully synthesized by microwave-induced combustion, using lithium nitrate, ferric nitrate, manganese nitrate, and carbohydrazide as the starting materials. The process takes only a few minutes to obtain as-received Mn-substituted lithium ferrite powders. The resultant powders annealed at 650 degrees C for 2 h and were investigated by thermogravimeter/differential thermal analyzer (TG/DTA), X-ray diffractometer (XRD), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM), and thermomagnetic analysis (TMA). The results revealed that the magnetic properties and Curie temperature of Mn-substituted lithium ferrite were strongly affected by Mn content. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：185 / 189
页数：5
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