JP2009124691A - ミリ波帯非可逆素子 - Google Patents
ミリ波帯非可逆素子 Download PDFInfo
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- JP2009124691A JP2009124691A JP2008268637A JP2008268637A JP2009124691A JP 2009124691 A JP2009124691 A JP 2009124691A JP 2008268637 A JP2008268637 A JP 2008268637A JP 2008268637 A JP2008268637 A JP 2008268637A JP 2009124691 A JP2009124691 A JP 2009124691A
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- 230000002427 irreversible effect Effects 0.000 title abstract description 6
- 239000000696 magnetic material Substances 0.000 claims abstract description 37
- 229910052772 Samarium Inorganic materials 0.000 claims abstract description 5
- 229910052769 Ytterbium Inorganic materials 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 5
- 229910052738 indium Inorganic materials 0.000 claims abstract description 5
- 229910052703 rhodium Inorganic materials 0.000 claims abstract description 5
- 229910052706 scandium Inorganic materials 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 5
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 5
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 5
- 230000005415 magnetization Effects 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 230000005684 electric field Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005291 magnetic effect Effects 0.000 abstract description 36
- 239000011019 hematite Substances 0.000 abstract description 26
- 229910052595 hematite Inorganic materials 0.000 abstract description 26
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 abstract description 26
- 239000013078 crystal Substances 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract description 8
- 229910052748 manganese Inorganic materials 0.000 abstract description 4
- 229910052759 nickel Inorganic materials 0.000 abstract description 4
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 4
- 239000011029 spinel Substances 0.000 abstract description 3
- 229910052596 spinel Inorganic materials 0.000 abstract description 3
- 239000002223 garnet Substances 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 239000002131 composite material Substances 0.000 description 17
- 239000002105 nanoparticle Substances 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 239000000243 solution Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 10
- -1 iron hydroxide compound Chemical class 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 7
- 235000014413 iron hydroxide Nutrition 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 230000010287 polarization Effects 0.000 description 7
- 230000002441 reversible effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 239000000377 silicon dioxide Substances 0.000 description 6
- 238000006467 substitution reaction Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000693 micelle Substances 0.000 description 4
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 3
- 239000008346 aqueous phase Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000003980 solgel method Methods 0.000 description 3
- 239000011343 solid material Substances 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000002269 spontaneous effect Effects 0.000 description 3
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 230000005350 ferromagnetic resonance Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
- 230000005381 magnetic domain Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 230000008707 rearrangement Effects 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
- H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
- H01F1/113—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles in a bonding agent
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Soft Magnetic Materials (AREA)
Abstract
【解決手段】この問題を解決するために、本発明では、化学式がMxFe2-xO3(ただし、0<x<2)で、MはIn, Ga, Al, Sc, Cr, Sm, Yb, Ce, Ru, Rh, Ti, Co, Ni, Mn, Zn, Zr, Yの少なくとも1種からなり、かつε相ヘマタイトの結晶構造を有する磁性材料を用いたミリ波帯非可逆素子を提案する。このε相ヘマタイトを主相とする磁性材料は、室温で巨大な保磁力と異方性磁界を有しており、この素子を動作させるための永久磁石を含む磁気回路の寸法を著しく低減できるだけでなく、最適設計によっては全く不要とすることが可能である。
【選択図】図2
Description
黒木、桜井、橋本、大越;「ε−Fe2O3ナノ磁性体におけるスピン再配列現象制御」第29回日本応用磁気学会学術講演集(2005) 21pPS-16 桜井、小田、縫田、橋本、大越;「ε−Fe2O3の示す室温巨大保磁力とスピン再配列」第29回日本応用磁気学会学術講演集(2005) 21pPS-17 桜井、下山、橋本、大越;「室温巨大保磁力を示すε−Fe2O3ナノ微粒子の磁場配向体作製」第30回日本応用磁気学会学術講演集(2006) 13pD-3 大越;「酸化物ナノ微粒子」セラミックス 41 (2006) No.4 pp.296-299
θ=Ct ----- (1)
と試料の厚みtに比例する。Cはファラデー定数といわれる。今、図6の配置で、θ=45度になるように、試料の厚みtを設定し、検光子15bも同じ方向に45度傾けて置くと、電波は入力側から出力側にスムースに伝わる。一方、なんらかの理由で出力側から入った電波は磁化された複合磁性体13によりさらに45個回転し、入力側に再び入るときは偏光子15aのすだれ状導体と電磁波の電界が平行となり、偏光子15aにて吸収され、入力側に戻らない。いわゆるファラデー回転型アイソレータを実現することができる。
2; ミリ波信号検出器
3a; 送信用ホーンアンテナ
3b; 受信用ホーンアンテナ
4; 試料容器固定台
5; 試料容器
6; 粉末試料
7a; 下パンチ
7b; 上パンチ
8a; 下ソレノイドコイル
8b; 上ソレノイドコイル
9; ダイス
10; 試料
11; ナノ粒子
12; バインダー
13; 複合磁性体
14a; 入力用ホーンアンテナ
14b; 出力用ホーンアンテナ
15a; 偏光子
15b; 検光子
16a; 複合磁性体
16b; 複合磁性体
17; 矩形導波管
18a; 複合磁性体
18b; 複合磁性体
19; 複合磁性体
20; 三分岐矩形導波管
Claims (4)
- ε−MxFe2-xO3(ただし、0<x<2)として表され、MはIn, Ga, Al, Sc, Cr, Sm, Yb, Ce, Ru, Rh, Ti, Co, Ni, Mn, Zn, Zr, Yの少なくとも1種からなる磁性材料を主構成要素としたミリ波帯非可逆素子。
- 前記磁性材料の磁化容易軸が一方向に配向されたものである請求項1に記載のミリ波帯非可逆素子。
- 前記磁性材料は、粒子で構成され、前記粒子の磁化容易軸が一方向に配向されたものである請求項1に記載のミリ波帯非可逆素子。
- ファラデー回転型アイソレータ、導波管型共鳴吸収型アイソレータ、導波管Y型接合サーキュレータ、導波管型電界変位型アイソレータ、ストリップ線路型の三分岐のサーキュレータ、ストリップ線路型エッジガイドモード型アイソレータのいずれか一種である請求項1に記載されたミリ波帯非可逆素子。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/253,651 US8335037B2 (en) | 2007-10-24 | 2008-10-17 | Millimeter wave band nonreciprocal device |
JP2008268637A JP5361324B2 (ja) | 2007-10-24 | 2008-10-17 | ミリ波帯非可逆素子 |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007300989 | 2007-10-24 | ||
JP2007300989 | 2007-10-24 | ||
JP2008268637A JP5361324B2 (ja) | 2007-10-24 | 2008-10-17 | ミリ波帯非可逆素子 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009124691A true JP2009124691A (ja) | 2009-06-04 |
JP5361324B2 JP5361324B2 (ja) | 2013-12-04 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2008268637A Expired - Fee Related JP5361324B2 (ja) | 2007-10-24 | 2008-10-17 | ミリ波帯非可逆素子 |
Country Status (2)
Country | Link |
---|---|
US (1) | US8335037B2 (ja) |
JP (1) | JP5361324B2 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2447965A4 (en) * | 2009-06-24 | 2016-11-16 | Univ Tokyo | METHOD FOR PRODUCING A MAGNETIC THIN LAYER, MAGNETIC THIN LAYER AND MAGNETIC MATERIAL |
JP2018056492A (ja) * | 2016-09-30 | 2018-04-05 | マクセルホールディングス株式会社 | 電波吸収シート |
JP2020127039A (ja) * | 2016-11-04 | 2020-08-20 | マクセルホールディングス株式会社 | 電磁波吸収シート |
JP2020167365A (ja) * | 2019-03-28 | 2020-10-08 | Dowaエレクトロニクス株式会社 | 置換型ε酸化鉄磁性粒子粉、置換型ε酸化鉄磁性粒子粉の製造方法、圧粉体、圧粉体の製造方法および電波吸収体 |
US11152711B2 (en) | 2016-11-04 | 2021-10-19 | Maxell Holdings, Ltd. | Electromagnetic-wave-absorbing sheet |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4859791B2 (ja) * | 2006-09-01 | 2012-01-25 | 国立大学法人 東京大学 | 電波吸収材料用の磁性結晶および電波吸収体 |
JP5445843B2 (ja) * | 2007-05-31 | 2014-03-19 | 国立大学法人 東京大学 | 磁性酸化鉄粒子、磁性体、および電波吸収体 |
JP6756483B2 (ja) * | 2015-01-19 | 2020-09-16 | 国立大学法人 東京大学 | ε酸化鉄を含む配向体とその製造方法、並びに製造装置 |
CN106248616B (zh) * | 2016-09-27 | 2017-10-24 | 深圳市太赫兹科技创新研究院有限公司 | 太赫兹全偏振态检测光谱仪 |
JP6632592B2 (ja) * | 2017-01-05 | 2020-01-22 | 富士フイルム株式会社 | ε−酸化鉄型強磁性粉末 |
WO2019187356A1 (ja) * | 2018-03-29 | 2019-10-03 | 国立大学法人東京大学 | 記録方法、記録装置、再生方法、再生装置、及び、高速応答素子 |
CN108373327B (zh) * | 2018-04-18 | 2021-02-02 | 成都信息工程大学 | 一种镍锌铈铁氧体软磁材料及其制备方法 |
CN111056828B (zh) * | 2019-12-31 | 2022-06-21 | 清华大学深圳国际研究生院 | 铁酸钬基太赫兹超材料及其制备方法和光学器件 |
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JP2000191368A (ja) * | 1998-12-25 | 2000-07-11 | Kyocera Corp | 高周波用磁性体及びこれを用いた高周波非可逆回路素子 |
JP2006306707A (ja) * | 2005-03-30 | 2006-11-09 | Toyota Central Res & Dev Lab Inc | 酸化物複合体及びその製造方法 |
JP2007269548A (ja) * | 2006-03-31 | 2007-10-18 | Univ Of Tokyo | 磁性材料 |
WO2008029861A1 (fr) * | 2006-09-01 | 2008-03-13 | The University Of Tokyo | Cristal magnétique pour matériau d'absorption d'onde radio et absorbant d'onde radio |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3921545B2 (ja) * | 2004-03-12 | 2007-05-30 | 独立行政法人物質・材料研究機構 | 蛍光体とその製造方法 |
US7260281B2 (en) * | 2005-03-30 | 2007-08-21 | Intel Corporation | Integratable optical isolator in a Mach-Zehnder interferometer configuration |
JP4730905B2 (ja) * | 2006-03-17 | 2011-07-20 | 国立大学法人 東京大学 | 磁性材料並びにそれを用いたメモリーおよびセンサ |
-
2008
- 2008-10-17 JP JP2008268637A patent/JP5361324B2/ja not_active Expired - Fee Related
- 2008-10-17 US US12/253,651 patent/US8335037B2/en active Active
Patent Citations (5)
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JP2000191368A (ja) * | 1998-12-25 | 2000-07-11 | Kyocera Corp | 高周波用磁性体及びこれを用いた高周波非可逆回路素子 |
JP2006306707A (ja) * | 2005-03-30 | 2006-11-09 | Toyota Central Res & Dev Lab Inc | 酸化物複合体及びその製造方法 |
JP2007269548A (ja) * | 2006-03-31 | 2007-10-18 | Univ Of Tokyo | 磁性材料 |
WO2008029861A1 (fr) * | 2006-09-01 | 2008-03-13 | The University Of Tokyo | Cristal magnétique pour matériau d'absorption d'onde radio et absorbant d'onde radio |
JP2008277726A (ja) * | 2006-09-01 | 2008-11-13 | Univ Of Tokyo | 電波吸収材料用の磁性結晶および電波吸収体 |
Non-Patent Citations (1)
Title |
---|
黒木施老、桜井俊介、橋本和仁、大越慎一: "ε-Fe2O3ナノ磁性体におけるスピン再配列現象制御", 第29回日本応用磁気学会学術講演概要集, vol. 21pPS-16, JPN6010074973, 19 September 2005 (2005-09-19), JP, pages 371, ISSN: 0002605931 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2447965A4 (en) * | 2009-06-24 | 2016-11-16 | Univ Tokyo | METHOD FOR PRODUCING A MAGNETIC THIN LAYER, MAGNETIC THIN LAYER AND MAGNETIC MATERIAL |
US9886978B2 (en) | 2009-06-24 | 2018-02-06 | The University Of Tokyo | Process for production of magnetic thin film, magnetic thin film, and magnetic material |
JP2018056492A (ja) * | 2016-09-30 | 2018-04-05 | マクセルホールディングス株式会社 | 電波吸収シート |
JP2020127039A (ja) * | 2016-11-04 | 2020-08-20 | マクセルホールディングス株式会社 | 電磁波吸収シート |
US11152711B2 (en) | 2016-11-04 | 2021-10-19 | Maxell Holdings, Ltd. | Electromagnetic-wave-absorbing sheet |
JP2022115987A (ja) * | 2016-11-04 | 2022-08-09 | マクセル株式会社 | 電磁波吸収シート |
US11515643B2 (en) | 2016-11-04 | 2022-11-29 | Maxell, Ltd. | Electromagnetic-wave-absorbing sheet |
JP7351967B2 (ja) | 2016-11-04 | 2023-09-27 | マクセル株式会社 | 電磁波吸収シート |
JP2020167365A (ja) * | 2019-03-28 | 2020-10-08 | Dowaエレクトロニクス株式会社 | 置換型ε酸化鉄磁性粒子粉、置換型ε酸化鉄磁性粒子粉の製造方法、圧粉体、圧粉体の製造方法および電波吸収体 |
Also Published As
Publication number | Publication date |
---|---|
US8335037B2 (en) | 2012-12-18 |
JP5361324B2 (ja) | 2013-12-04 |
US20090261919A1 (en) | 2009-10-22 |
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