| Synthesis and Characterization of Gadolinium Doping M-type Hexagonal Barium Ferrite Ultrafine Powders |
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| 引用本文： | 郭睿倩,陈亚杰,顾明元,李洪桂,孙培梅,金燕萍,梁乐. Synthesis and Characterization of Gadolinium Doping M-type Hexagonal Barium Ferrite Ultrafine Powders[J]. 中国稀土学报(英文版), 2003, 21(5): 543-547 |
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| 作者姓名： | 郭睿倩 陈亚杰 顾明元 李洪桂 孙培梅 金燕萍 梁乐 |
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| 作者单位： | State Key Laboratory of MMCs，Shanghai Jiaotong University，Department of Physics，Suzhou University，State Key Laboratory of MMCs，Shanghai Jiaotong University，Shanghai 200030，China，Department of Metallurgy Science and Engineering，Central South University，Department of Metallurgy Science and Engineering，Central South University，State Key Laboratory of MMCs，Shanghai Jiaotong University，Shanghai 200030，China，State Key Laboratory of MMCs，Shanghai Jiaotong University，Shanghai 200030，China Shanghai 200030，China Institute of Advanced Materials Fudan University Shanghai 200433，China，Suzhou 215006，China，Changsha 410083，China，Changsha 410083，China |
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| 摘 要： | Becausepermanentbariumferritematerialpos sessesrelativelyhighsaturationmagnetization ,greatcoerciveforceandhighmagneticanisotropyfieldaswellasexcellentchemicalstabilityandcorrosionresis tance ,ithasbeenwidelyusedastraditionalperma nentmagnets ,high densitymagneticandmagneto op ticrecordingmedia ,microwavefilters[1,2 ] .Thusthestudyonthesynthesisofmagnetoplumbite typebariumferriteisconsiderablyimportanttotheelectronicandmagneticmaterialsindustry .Duringthelastfewdecades ,peoplehavemadegreateffo…
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| 关 键 词： | 掺钆 溶胶凝胶法 柠檬酸盐 微细粉末 稀土 M类型六方形钡铁氧体 |
Synthesis and Characterization of Gadolinium Doping M-type Hexagonal Barium Ferrite Ultrafine Powders |
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| Guo Ruiqian ,,Chen Yajie ,Gu Mingyuan ,Li Honggui ,Sun Peimei Jin Yanping ,Liang Le. Synthesis and Characterization of Gadolinium Doping M-type Hexagonal Barium Ferrite Ultrafine Powders[J]. Journal of Rare Earths, 2003, 21(5): 543-547 |
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| Authors: | Guo Ruiqian Chen Yajie Gu Mingyuan Li Honggui Sun Peimei Jin Yanping Liang Le |
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| Affiliation: | Guo Ruiqian 1,2*,Chen Yajie 3,Gu Mingyuan 1,Li Honggui 4,Sun Peimei 4 Jin Yanping 1,Liang Le 1 |
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| Abstract: | The hexagonal BaGdxFe12-xO19 (x=0.1～1.0) nano-sized powders with M-type structure were synthesized by the sol-gel auto-combustion high-temperature synthesis method. The effects of pH of the solution, the molar ratio of nitrate/citric acid and the calcination temperature on the synthesis of the ferrites were investigated. The crystal structure, grain size, shape and magnetic properties were studied by means of XRD, TEM and vibrating sample magnetometer.The results show that under the conditions of pH 7.0 or so, mole ratio of citrate/nitrate (1～3) and calcination temperature of 850 ℃ for 1 h, M-type BaGdxFe12-xO19 ultrafine powders with a particle size of less than 100 nm can be obtained, and the coercive force reaches 430 kA*m-1 at x=1.0, which is far greater than that of barium ferrite (BaFe12O19). |
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| Keywords: | materials science sol gel method permanent ferrite citrate ultrafine powders rare earths |
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