Development of Magneto-Optical Ceramic Materials by Mist-Pyrolysis

雾热解磁光陶瓷材料的开发

• 批准号: 03452154
• 负责人: FUJII Toshitaka
• 金额: $ 1.92万
• 依托单位: Toyohashi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03452154/
• 关键词: Mist-pyrolysis; Sol-gel method; Gel-coated films; Particles-dispersed films; Bi-substituted YIG; Magnetic oxide particles; Magneto-optic Faraday effect; Amorphous oxide films; 磁気光学ファラデ-効果; YIG; 高分子分散膜

1. Construction of fabrication apparatus of ceramics powders by mist-pyrolysis The apparatus consists of mist generator utilizing an ultrasonic neblizer (f =1 MHz) and an upright type electric furnace with a reaction tube of about 1 meter. The starting materials were the solutions of nitrates of the constituent metal ions dissolved in distilled water. The ion concentration in the solution,C_N was changed from 0.0001 to 0.1(mol/liter). The carrier gas was nitrogen or oxygen (or mixture of both gases). Main results are summarized as follows: (1) The deviation of composition occurs between the starting solution and the produced particles: The reduction of metal ion in the particles is determined by the ion mass irrespective of C_N. (2) The particle size a depends strongly on C_N according to the relation lna=AlnC_N +B, A, B: positive constants. (3) The produced particles were not substantially influenced by the flow rate of carrier gas unless the rate was very small.2. Fabrication of magn … More etic oxide powders by mist-pyrolysis. The following particles having a= 0.07-0.5 mum were successively produced. (1) YIG (Y_3Fe_5O_<12>) powders, (2) Bi-substituted YIG (Bi_xY_<3-x>Fe_5O_<12>, x=0-1.0) powders, (3) Pb-hexaferrite (6PbO・Fe_2O_3) powders, (4) Y-orthoferrite (YFeO_3) particles.3. Preparation of Bi-substituted YIG (and DylG) films by gel-coating on substrates. (1) Single crystal films with highly Bi substitution (x =2.7 f.u.) were obtained at 530ﾟC by coating the gels on GGG single crystal substrates. (2) The magneto-optical Faraday spectra can be explained by adding the contributions of the paramagnetic type transitions to those of the diamagnetic transitions in the foregoing theory based on the charge transfer transition.4. Amorphous ferromagnetic films of ternary oxide systems prepared by gel-coating or rf-reactive sputtering on glass substrates. (1) Bi_2O_3-Fe_2O_3-PbTiO_3 and Bi_2O_3-Fe_2O_3-PbZrO_3,(2) K_2O-Fe_2O_3-Bi_2O_3.5. Development of new type magneto-optical materials utilizing ferromagnetic fine particles dispersed in transparent matices. (1) Co-substituted Ba-ferrite particles dispersed in an organic resin. (2) Ultrafine Co particles dispersed in polycarbonates (polystylene and polymethyl methacrylate). Less

1.喷雾热解法制备陶瓷粉末的装置的结构该装置由利用超声波雾化器（f = 1MHz）的喷雾发生器和具有约1米的反应管的直立式电炉组成。起始材料是溶解在蒸馏水中的组成金属离子的硝酸盐溶液。溶液中的离子浓度C_N从0.0001（mol/L）变为0.1（mol/L）。载气为氮气或氧气（或两种气体的混合物）。主要结果如下：（1）初始溶液与生成粒子之间存在组成偏差：粒子中金属离子的还原取决于离子质量，与C_N无关。(2)颗粒尺寸a与C_N的关系式为lna = AlnC_N + B，A，B为正常数。(3)除非载气流量很小，否则载气流量对生成的颗粒影响不大.制造磁铁 ...更多信息 通过喷雾热解制备环氧乙烷粉末。连续制备具有a = 0.07 - 0.5 μ m的以下颗粒。(1)（2）Bi取代的YIG（Bi_xY_Fe_5O_，x = 0 - 1.0）粉末，（3）Pb-六角铁氧体（6PbO·Fe_2O_3）粉末，（4）Y-正铁氧体（YFeO_3）颗粒.<12><3-x><12>通过在基底上的凝胶涂覆制备Bi取代的YIG（和DylG）膜。(1)具有高度Bi取代的单晶膜（x = 2.7 f.u.）通过将凝胶涂覆在GGG单晶衬底上，在530 ° C下获得。(2)磁光法拉第谱可以通过在上述基于电荷转移跃迁的理论中将顺磁型跃迁的贡献加到抗磁型跃迁的贡献上来解释.玻璃基片上用凝胶涂层或射频反应溅射法制备三元氧化物系非晶铁磁薄膜。(1)（2）K_2O-Fe_2O_3-Bi_2O_3。利用铁磁性微粒分散于透明基质中之新型磁光材料之发展。(1)分散在有机树脂中的共取代的Ba-铁氧体颗粒。(2)超细Co颗粒分散在聚碳酸酯（聚苯乙烯和聚甲基丙烯酸甲酯）中。少

项目成果

T.lmamura,K.Ohmori,K.Yamaguchi,and T.Fujii: "Magneto-optic Faraday effect of composite thin films of ultrafine cobalt particles particles dispersed in polymethyl methacrylate(in print)" Journal of Magnetic Society of Japan. 17,S1. (1993)

T.lmamura、K.Ohmori、K.Yamaguchi 和 T.Fujii：“分散在聚甲基丙烯酸甲酯中的超细钴颗粒复合薄膜的磁光法拉第效应（印刷中）”日本磁学会杂志。

K.Matsumoto: "Magnetic and magnetoーoptical properties of films composed of Coーsubstituted Ba ferrite fine particles dispersed in a resin" Journal of Magnetic Society of Japan. 15,S1. 275-278 (1991)

K.Matsumoto：“由分散在树脂中的共取代Ba铁氧体细颗粒组成的薄膜的磁和磁光特性”日本磁学会杂志15，S1 275-278（1991）。

K.Matsumoto: "Highly bismuthーsubstituted yttrium iron garnet singleーcrystal films by solーgel method" Journal of Magnetism and Magnetic Materials. (1991)

K.Matsumoto：“通过溶胶凝胶法制备高度铋取代的钇铁石榴石单晶薄膜”《磁性与磁性材料杂志》(1991)。

T.Fujii, K.Matsumoto, S.Sasaki, anK.Yamaguchi: "Bismuth-substituted yttrium iron garnet single-crystal films pre-pared by spin-on process coated on GGG single-crystal plates." J. Magn. Soc. Jpn.17, S1. (1993)

T.Fujii、K.Matsumoto、S.Sasaki、anK.Yamaguchi：“通过旋涂工艺制备的铋取代钇铁石榴石单晶薄膜，涂覆在 GGG 单晶板上。”

T. Fujii: "Rare-earth iron based garnet films -Applications to ultra high density magneto-optical storage media- (to be submitted) [in Japanese]." Electronic Cramics. 24, No.121. (1993)

T. Fujii：“稀土铁基石榴石薄膜 - 超高密度磁光存储介质的应用 - （待提交）[日语]”。