SYNTHESIS OF NONTHERMODYNAMICAL Bi_3Fe_5O_<12> SYSTEM WITH PROMINENT MAGNETOOPTICAL CHARACTERISTICS
具有突出磁光特性的非热力学Bi_3Fe_5O_<12>体系的合成
基本信息
- 批准号:06650365
- 负责人:
- 金额:$ 1.41万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for General Scientific Research (C)
- 财政年份:1994
- 资助国家:日本
- 起止时间:1994 至 1995
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
(1)Studies on improvement of film quality of pure Bi_3Fe_5O_<12> garnet(1)Precise XRD measurements were done on the polycrystalline Bi_3Fe_5O_<12> (BIG) film specimens prepared using newly developed technique. A trace of Bi_2Fe_4O_9 was found in both single-and poly-crystalline BIG films. From symmetric and asymmetric XRD measurements, the precise lattice parameter of BIG was determined as 1.2647nm which is much larger than the value of 1.2624nm determined on the single crystalline film specimen or extrapo lated from Bi-substituted YIG system. The thermodynamical garnet layr for epitaxial growth substrate showed no specific orientation, however, polycrystalline BIG layr [100] orientation along the film normal.(2)A role of Bi^<3+> ion in magnetic and magnetooptical properties of BIG were studied by measuring Faraday rotation angle rheta_F at 633nm and room temperature applying the magnetic field upto 150T.The Faraday effect of BIG under higher magnetic field was found to be strongly affected by electronic charge transfer at the tetrahedral site.(2)Studies on ionic subtitution effects in BIGIn BIG,the ions which are easily substituted in the thermodynamical garnets, such as Al^<3+> or Ga^<3+>, were diffused readily during the film growth and substituted uniformly. Co^<2+> ions which is hardly substituted in the thermodynamical garnet was also hardly introduced into the lattice sites in BIG.Co^<2+> ions were found to exist as very fine particles of Co_XFe_<3-X>O_4 spinel phase which were magnetically coupled with BIG by exchange interaction. The alternating ion beam sputtering technique was proved to be very effective for not only ion substitution but also creation of new composite materials.
(1)提高纯Bi3Fe5O;12>;石榴石薄膜质量的研究(1)对用新技术制备的Bi3Fe5O;12>;(BIG)多晶薄膜样品进行了精确的X射线衍射测试。在单晶和多晶大薄膜中都发现了微量的Bi2Fe4O9。通过对称和不对称的X射线衍射测量,确定了BIG的精确晶格参数为1.2647 nm,远大于在单晶薄膜样品上测得的1.2624 nm,也大于从Bi基YIG系统中提取的1.2624 nm。(2)通过测量633 nm处的Faraday旋转角Rheta_F和室温至150T的磁场,研究了Bi^&Lt;3+&Gt;离子对BIG磁光性质的影响。在较高磁场下,BIG的法拉第效应受到四面体位电荷转移的强烈影响。(2)对热力学石榴石中容易被取代的离子,如Al^&Lt;3+>;进行了离子取代效应研究。或Ga~(2+)~(2+)~(3+)在薄膜生长过程中容易扩散并均匀取代。热力学石榴石中很难被取代的Co^<;2+>;离子也很难被引入到BIG的晶格中,Co^<;2+>;离子以非常细的CoxFe<;3-X>;O4尖晶石相存在,通过交换作用与BIG磁耦合。交流离子束溅射技术不仅在离子替代方面非常有效,而且在创造新的复合材料方面也是非常有效的。
项目成果
期刊论文数量(28)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
奥田,高士: "Co Ion-doped Bi_3Fe_5O_<12> Garnet Films" J.Magnetism and Magnetic Materials 22GD02:(accepted).
Okuda, Takashi:“Co 离子掺杂 Bi_3Fe_5O_<12> 石榴石薄膜”J.Magnetism and Magnetic Materials 22GD02:(已接受)。
- DOI:
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- 影响因子:0
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- 通讯作者:
奥田高士、加藤嘉睦、大里 齊、安達信泰、安藤功兒、阿部尚志、山元 洋: "Co Ion-doped Bi_3Fe_5O_<12> Garnet Films" J.Magnetism and Magnetic Materials. 148. 275-276 (1995)
Takashi Okuda、Yoshimutsu Kato、Sai Osato、Nobuyasu Adachi、Koji Ando、Takashi Abe、Hiroshi Yamamoto:“Co 离子掺杂 Bi_3Fe_5O_<12> 石榴石薄膜”J.Magnetism and Magnetic Materials 148. 275-276 (1995)。
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- 影响因子:0
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H.Toraya and T.Okuda :""Crystal Strucure Analysis of Polycrystalline Bi_3Fe_5O_<12> Thin Films by Using Asymmetric and Symmetric Diffraction Techniques"" J.Phys.Chem.Solids. 56. 1317-1322 (1995)
H.Toraya 和 T.Okuda:“使用不对称和对称衍射技术对多晶 Bi_3Fe_5O_12 薄膜进行晶体结构分析”J.Phys.Chem.Solids。
- DOI:
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- 影响因子:0
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虎谷秀穗: "Crystal Structure Analysis of Polycrystalline Bi_3Fe_5O_<12> Thin Film by Using Asymmetric and Symmetric Diffraction Techniques" J. Phys. Chem. Solids. 56. 1317-1322 (1995)
Hideaki Toratani:“使用不对称和对称衍射技术分析多晶 Bi_3Fe_5O_<12> 薄膜”,《物理化学》,56。1317-1322 (1995)
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- 影响因子:0
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西田秀一、奥田高士、大里 齊、加藤嘉睦、鈴木利保: "Al,Ga置換Bi_3Fe_5O_<12>ガ-ネット薄膜の合成" 日本応用磁気学会誌. 18. 157-160 (1994)
Shuichi Nishida、Takashi Okuda、Satoshi Osato、Yoshimutsu Kato、Toshiyasu Suzuki:“Al,Ga取代的Bi_3Fe_5O_<12>石榴石薄膜的合成”日本应用磁学学会杂志18. 157-160 (1994)。
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OKUDA Takashi其他文献
OKUDA Takashi的其他文献
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- 批准号:
24650562 - 财政年份:2012
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23790097 - 财政年份:2011
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Investigation of a novel mechanism of cholinergic activation for cognitive impairment treatment
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- 批准号:
21790091 - 财政年份:2009
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- 批准号:
21650228 - 财政年份:2009
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Grant-in-Aid for Challenging Exploratory Research
PREPARATION AND CHARACTERIZATION OF Nd-Fe-B FILMS WITH HIGH COERCIVITY
高矫顽力Nd-Fe-B薄膜的制备及表征
- 批准号:
12650310 - 财政年份:2000
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$ 1.41万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Synthesis of Magneto-optical Films with artificial Structure Using Reactive Altemating Sputtering Technique
采用反应交替溅射技术合成人工结构磁光薄膜
- 批准号:
08650377 - 财政年份:1996
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