KR970021024A - 높은 유전 상수 및 낮은 온도 계수를 갖는 피로클로르계 산화물 - Google Patents

높은 유전 상수 및 낮은 온도 계수를 갖는 피로클로르계 산화물 Download PDF

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KR970021024A
KR970021024A KR1019960043671A KR19960043671A KR970021024A KR 970021024 A KR970021024 A KR 970021024A KR 1019960043671 A KR1019960043671 A KR 1019960043671A KR 19960043671 A KR19960043671 A KR 19960043671A KR 970021024 A KR970021024 A KR 970021024A
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South Korea
Prior art keywords
dielectric constant
perovskite
pyrochlor
temperature coefficient
low temperature
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KR1019960043671A
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로버트 조셉 카바
제임스 조셉 크라예브스키
윌리암 프레데릭 펙
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웨이쓰 엘리
에이티앤드티 아이피엠 코포레이션
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Publication of KR970021024A publication Critical patent/KR970021024A/ko

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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/495—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates
    • C04B35/497—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates based on solid solutions with lead oxides
    • C04B35/499—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on vanadium, niobium, tantalum, molybdenum or tungsten oxides or solid solutions thereof with other oxides, e.g. vanadates, niobates, tantalates, molybdates or tungstates based on solid solutions with lead oxides containing also titanates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/12—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Insulating Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

실온 근처에서 온도에 의존하는 유전 상수가 Pb,(Nb, Mg, Ti)206+x피로클로르와 Pb(Nb, Mg, Ti)O3페로브스카이트의 상 혼합물인 벌크 세라믹에 대해 측정되어왔다. 피로클로르에 대한 유전 상수의 (-)온도 계수가 페로브스카이트의 유전 상수의 (+)온도 계수에 의해 매우 밀접하게 보정되는 일련의 조성물이 발견되었다. 이들 조성물은 200 근처의 유전 상수, 1MHz에서 200근처의 Q′을 갖고, 이들은 많이 연구된 높은 유전 상수, 낮은 Q의 바륨-스트론튬 티타네이트 및 낮은 유전 상수, 높은 Q의 바륨-란타니드 티타네이트사이의 유전의 중간 계층을 구성한다.

Description

높은 유전 상수 및 낮은 온도 계수를 갖는 피로클로르계 산화물
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 Pb : ∑(Nb+Mg+Ti) =1 : 1인 곳에서 평면에서의 PbO-Nb205-MgO-TiO2상 다이아그램의 일부이다. 등고선은 20℃에서의 유전 상수의 값을 나타낸다. 빗금친 부분은 k대 T의 기울기가 낮은 K에서의 (-)에서 높은 K에서의 (+)로 변하는 곳의 조성물 영역이다.
제2도는 가장 우수한 보정 물질중 일부에 대한 20℃ 부근의 온도에서의 K의 변이를 나타내는 그래프이다.
제3도는 Pb 과다 및 결핍의 함수로서 특정한 Nb : Mg : Ti의 비에 대한 20℃ 부근의 온도에서의 K의 변이를 나타내는 그래프이다.

Claims (7)

  1. 페로브스카이트 및 피로클로르가 실질적으로 평형을 이룬 평면에서 4원 시스템 PbO-MgO-Nb2O5-TiO2를 포함하는, 높은 유전 상수 및 유전 상수의 낮은 온도 의존성을 갖는 유전 물질.
  2. 제1항에 있어서, 1Pbo : ∑(Mg+Ti+Nb)가 약 1인 유전 물질.
  3. 제1항에 있어서, Pb2Mg1/3Nb2/306.5-PbTiO3-PbMg1/3Nb2/303삼각형인 유전 물질.
  4. 유전 상수의 낮은 온도 의존성을 제공하기에 효과적인 양의 높은 Tc페로브스카이트 Pb(Nb, Mg, Ti)03와, 낮은 Tc피로클로르 상 Pb2(Nb, Mg, Ti)206+x의 혼합물을 포함하는 유전 물질.
  5. 제3항에 있어서, 약 90 내지 95%의 Pb2(Nb, Mg, Ti)206+x피로클로르와 약 5 내지 10%의 Pb(Nb, Mg,Ti)03페로브스카이트를 포함하는 유전 물질.
  6. 제1항에 있어서, 혼합물이 PbTi03및 PbMg1/3Nb2/303페로브스카이트 및 Pb2Nb207및 Pb2Mg1/3Nb2/306.5피로클로르를 함유하는 평면을 포함하는 유전 물질.
  7. 제1항에 있어서, PbxNbyMgzTiu(이때, x는 0.9 내지 1.1이고, y는 0.6 내지 0.8이고, z는 0.05 내지 0.15 이며, u는 0.10 내지 0.30임) 산화물을 포함하는 유전물질.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960043671A 1995-10-03 1996-10-02 높은 유전 상수 및 낮은 온도 계수를 갖는 피로클로르계 산화물 KR970021024A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/538,318 1995-10-03
US08/538,318 US5658485A (en) 1995-10-03 1995-10-03 Pyrochlore based oxides with high dielectric constant and low temperature coefficient

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KR970021024A true KR970021024A (ko) 1997-05-28

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US (1) US5658485A (ko)
EP (1) EP0767153B1 (ko)
JP (1) JPH09118564A (ko)
KR (1) KR970021024A (ko)
DE (1) DE69619761D1 (ko)

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JPH09208312A (ja) * 1996-01-26 1997-08-12 Murata Mfg Co Ltd 誘電体磁器組成物
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US7098360B2 (en) * 2002-07-16 2006-08-29 Kreido Laboratories Processes employing multiple successive chemical reaction process steps and apparatus therefore
EP1540302A4 (en) * 2002-09-11 2008-05-07 Kreido Lab METHOD AND DEVICES FOR MIXING AND REACTING MATERIALS WITH GREAT SHARING
US6938687B2 (en) * 2002-10-03 2005-09-06 Holl Technologies Company Apparatus for transfer of heat energy between a body surface and heat transfer fluid
US7952349B2 (en) * 2002-12-09 2011-05-31 Ferro Solutions, Inc. Apparatus and method utilizing magnetic field
US20090062886A1 (en) * 2002-12-09 2009-03-05 Ferro Solutions, Inc. Systems and methods for delivering electrical energy in the body
US7808236B1 (en) 2002-12-09 2010-10-05 Ferro Solutions, Inc. Energy harvester utilizing external magnetic field
US7569952B1 (en) 2003-04-18 2009-08-04 Ferro Solutions, Inc. High efficiency, inductive vibration energy harvester
JP4513402B2 (ja) * 2004-04-28 2010-07-28 株式会社村田製作所 チップ型ｐｔｃサーミスタ素子
CN107793153B (zh) * 2017-11-20 2018-07-03 首凯汽车零部件（江苏）有限公司 一种复合型热敏电阻材料及其制备方法和应用

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JPS63141205A (ja) * 1986-12-04 1988-06-13 太陽誘電株式会社 誘電体磁器
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JPH09118564A (ja) 1997-05-06
DE69619761D1 (de) 2002-04-18
US5658485A (en) 1997-08-19
EP0767153A1 (en) 1997-04-09
EP0767153B1 (en) 2002-03-13

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