欢迎登录材料期刊网

材料期刊网

高级检索

采用HPAgilent4294A阻抗分析仪、XRD、TEM等测试方法研究了不同电阻率硅片对Sr0.5Ba0.5TiO3(SBT)薄膜结构与性能的影响.在测试频率为1KHz时,在高阻硅片上生成的SBT薄膜的相对介电常数εr,介质损耗tanδ分别为100.54,0.060,材料的介电性能相对提高,并表现出较好的频散特性;最大εr温度点Tm(居里温度)稍微移向高温.在高阻硅片上制备的SBT薄膜易生成四方钙钛矿结构,薄膜表面无裂纹,孔洞少,比较致密,晶粒的平均粒径均为80nm,分布均匀;晶格条纹间距约为0.296nm,晶界2侧的晶粒取向是随机的.

参考文献

[1] Al - shareef H N;Dimos D .Leakage and reliability characteristics of lead zirconate titanate thin- film capacitors[J].Journal of the American Ceramic Society,1997,80(12):3127-3132.
[2] 杨平雄,邓红梅,褚君浩.层状钙钛矿结构铁电薄膜SrBi2Ta2O9的掺杂改性研究[J].物理学报,1998(07):1222-1228.
[3] Watanabe T;Funakubo H;Saito K .Ferroelectric property of epitaxial Bi4Ti3O12 films prepared by metallorganic chemical vapour deposition[J].Journal of Materials Research,2001,16(01):303-307.
[4] Liou J W;Chiou B S .Dielectric characteristics of doped Ba1-xSrxTiO3 at the paralectric state[J].Materials Chemistry and Physics,1997,51:59-63.
[5] Erker EG.;Liu Y.;Periaswamy P.;Taylor TR.;Speck J.;York RA.;Nagara AS. .Monolithic Ka-band phase shifter using voltage tunable BaSrTiO3 parallel plate capacitors[J].IEEE Microwave and Guided Wave Letters,2000(1):10-12.
[6] Liu Y.;Nagra AS.;York RA.;Borgioli A. .K-band 3-bit low-loss distributed MEMS phase shifter[J].IEEE Microwave and Guided Wave Letters,2000(10):415-417.
上一张 下一张
上一张 下一张
计量
  • 下载量()
  • 访问量()
文章评分
  • 您的评分:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%