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公开(公告)号:US06380117B2
公开(公告)日:2002-04-30
申请号:US09333944
申请日:1999-06-16
IPC分类号: C04B35468
CPC分类号: H01G4/1227 , C04B35/468 , H01B3/12 , H01P1/2056
摘要: Disclosed is a dielectric material comprising: 100 parts by weight of a main component having a composition represented by formula: xBaO—yRE2O3—zTiO2, wherein RE represents at least one rare earth element and x+y+z=100 mol %; 5 parts by weight or less of at least one alkali metal oxide; and 5 parts by weight or less of Bi2O3.
摘要翻译: 公开了一种电介质材料,其包含:100重量份具有由式:xBaO-yRE 2 O 3 -zTiO 2表示的组成的主要组分,其中RE表示至少一种稀土元素,x + y + z = 100摩尔% 5重量份以下的至少一种碱金属氧化物; 和5重量份以下的Bi 2 O 3。
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公开(公告)号:US06319871B1
公开(公告)日:2001-11-20
申请号:US09385470
申请日:1999-08-30
IPC分类号: C04B35462
CPC分类号: C07B45/00 , C04B28/02 , C04B40/0039 , C04B2111/00017 , C04B2111/00672 , C04B2103/40
摘要: Disclosed is a dielectric material comprising: a main ingredient having a composition represented by xBaO-yRE2O3-zTiO2, wherein RE represents at least one rare earth element, and x+y+z=100 mol %; at least one alkali metal oxide; and an ingredient derived from an oxygen supplying agent which releases oxygen on heating.
摘要翻译: 公开了一种电介质材料,其包含:具有由xBaO-yRE 2 O 3 -zTiO 2表示的组成的主成分,其中RE表示至少一种稀土元素,x + y + z = 100摩尔% 至少一种碱金属氧化物; 以及从加热时释放氧气的供氧剂得到的成分。
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公开(公告)号:US6165927A
公开(公告)日:2000-12-26
申请号:US65607
申请日:1998-04-24
IPC分类号: C04B35/468 , H01B3/12 , H01G4/12 , H01P1/205 , H01P7/10
CPC分类号: H01G4/1227 , C04B35/4686 , H01B3/12 , H01P1/2056 , H01P7/10
摘要: A dielectric material based on BaO-RE.sub.2 O.sub.3 -TiO.sub.2 is disclosed, which has a relatively high relative permittivity .epsilon..sub.r, a small absolute value of the temperature coefficient of resonance frequency .tau..sub.f and a high coefficient of unloaded quality Q.sub.u. Processes for producing the dielectric material are also disclosed. The dielectric material comprises 100 parts by weight of main ingredients having a composition represented by xBaO-yRE.sub.2 O.sub.3 -zTiO.sub.2 (wherein RE represents a rare earth element and x+y+z=100) and up to 5 parts by weight of at least one alkali metal oxide. This alkali metal oxide serves to improve .epsilon..sub.r and Q.sub.u without a considerable sacrifice of .tau..sub.f. The RE preferably consists of samarium or a combination of samarium with neodymium and/or lanthanum. In producing the dielectric material, a dense sintered body can be obtained without fail by using a raw material containing hydroxyl groups as a starting material for the rare-earth ingredient among the main ingredients.
摘要翻译: 公开了一种基于BaO-RE2O3-TiO2的介电材料,它具有相对较高的相对介电常数εr,谐振频率τf的温度系数的绝对值小,以及无负载质量Qu的高系数。 还公开了用于制造电介质材料的方法。 电介质材料包含100重量份具有由xBaO-yRE 2 O 3 -ZTiO 2(其中RE表示稀土元素并且x + y + z = 100)表示的组成的主要成分和至多5重量份的至少一种碱 金属氧化物。 这种碱金属氧化物用于改善ε兰曲,而没有相当大的牺牲τf。 RE优选由钐或钐与钕和/或镧的组合组成。 在电介质材料的制造中,通过使用含有羟基的原料作为主要成分中的稀土成分的原料,可以不失败地获得致密的烧结体。
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