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Ceramic ferroelectric composite materials with enhanced electronic properties BSTO-Mg based compound-rare earth oxide
Ceramic ferroelectric composite materials with enhanced electronic properties BSTO-Mg based compound-rare earth oxide
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机译：具有增强的电子性能的陶瓷铁电复合材料BSTO-Mg基复合稀土氧化物
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摘要
Ceramic ferroelectric composite materials comprising barium strontium titte/magnesium and oxygen-containing compound composite further doped with rare earth (lanthanide) oxides. More particularly, these inventive composites are comprised of Ba.sub.1-x Sr.sub.x TiO.sub. 3 /Mg--O based compound/rare earth oxide composite, wherein x is greater than or equal to 0.0 but less than or equal to 1.0, and wherein the weight ratio of BSTO to Mg compound may range from 99.75-20 wt. % BSTO to 0.25-80 wt. % Mg compound, and wherein said rare earth oxide additive comprises less than about 10 mole percent of the composite. The rare earth oxides of the composite include all oxides of the lanthanide series elements including scandium and yttrium, as well as combinations thereof. The magnesium- based compound may be selected from the group consisting of MgO, MgZrO. sub.3, MgZrSrTiO.sub.3, MgTiO.sub.3, and MgCO. sub.3. This new class of composite materials has enhanced electronic properties including: low dielectric constants; substantially decreased electronic loss (low loss tangents); increased tunability; increased temperature stability; decreased sintering temperatures; and low curie temperatures. The electronic properties of these new materials can be tailored for various applications including phased array antenna systems, capacitors, transmission wire, wireless communication, and pyroelectric guidance devices.
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机译：包含铁酸锶锶/镁和还掺杂有稀土（镧系）氧化物的含氧化合物复合物的陶瓷铁电复合材料。更具体地，这些本发明的复合材料由Ba 1-x Sr x TiO 2组成。 3 / Mg-O基化合物/稀土氧化物复合物，其中x大于或等于0.0但小于或等于1.0，并且其中BSTO与Mg化合物的重量比可以为99.75-20wt。％。 BSTO的重量％至0.25-80wt。 Mg化合物，其中所述稀土氧化物添加剂占复合材料的小于约10摩尔％。复合材料的稀土氧化物包括镧系元素的所有氧化物，包括scan和钇，以及它们的组合。镁基化合物可以选自MgO，MgZrO。 sub.3，MgZrSrTiO.sub.3，MgTiO.sub.3和MgCO。 3。这种新型的复合材料具有增强的电子性能，包括：低介电常数;电子损耗（低损耗正切）大大降低;可调性增强;提高温度稳定性;降低烧结温度;和居里温度低。这些新材料的电子特性可以针对各种应用进行定制，包括相控阵天线系统，电容器，传输线，无线通信和热电引导设备。
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