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首页> 外文期刊>Journal of materials science >Structural and dielectric properties of (Ba_xMg_(1-x))(Ti_(0.95)Sn_(0.95))O_3 (x=0.025,0.05,0.075 and 0.1) solid solutions
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Structural and dielectric properties of (Ba_xMg_(1-x))(Ti_(0.95)Sn_(0.95))O_3 (x=0.025,0.05,0.075 and 0.1) solid solutions

机译：（Ba_xMg_（1-x））（Ti_（0.95）Sn_（0.95））O_3（x = 0.025,0.05,0.075和0.1）固溶体的结构和介电性能

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摘要

The structural and dielectric properties of novel (BaxMg1-x)(Ti0.95Sn0.05)O-3 (x=0.025, 0.05, 0.075, 0.1) solid solutions synthesized by conventional mixed oxide route were investigated. X-ray diffraction, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) revealed the formation of multiphase system with MgTiO3 as main phase. The dielectric properties of these materials were strongly dependent upon amount of x concentration and it was observed that with an increase in the x concentration from 0.025 to 0.1, the relative permittivity ((r)) increased from 18.0 to 22.72, losses (tan ) increased from 0.002 to 0.025 and temperature coefficient of resonant frequency ((f)) shifted from -35.5ppm/degrees C to +2.8ppm/degrees C. A reasonably good combination of dielectric properties was observed for (BaxMg1-x)(Ti0.95Sn0.05)O-3 with x=0.05, having (r) of 19.7, tan of 0.008 and (f) of -13.1ppm/degrees C at a sintering temperature of 1250 degrees C. Owing to low-to-medium relative permittivity, low losses and small negative value of temperature coefficient of resonant frequency, the present materials could be used as substrate for various communication devices including dielectric resonator antennas, filters etc.
机译：研究了通过常规混合氧化物法合成的新型（BaxMg1-x）（Ti0.95Sn0.05）O-3（x = 0.025，0.05，0.075，0.1）固溶体的结构和介电性能。 X射线衍射，扫描电子显微镜（SEM）和能量色散X射线（EDX）揭示了以MgTiO3为主要相的多相体系的形成。这些材料的介电性能在很大程度上取决于x浓度，并且可以观察到，随着x浓度从0.025增加到0.1，相对介电常数（（r））从18.0增加到22.72，损耗（tan）增加从0.002到0.025，谐振频率（（f））的温度系数从-35.5ppm /°C转变为+ 2.8ppm /°C。（BaxMg1-x）（Ti0.95Sn0）观察到介电性能的合理良好组合.05）O-3，x = 0.05，在1250摄氏度的烧结温度下具有（r）为19.7，tan为0.008和（f）为-13.1ppm /℃。由于中低介电常数由于具有低损耗，谐振频率温度系数的负值小等优点，因此本发明的材料可用作包括介电谐振器天线，滤波器等在内的各种通信设备的基板。

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  • 来源
    《Journal of materials science》 |2019年第7期|6500-6506|共7页
  • 作者

    Singh Jasdeep; Bahel Shalini;

  • 作者单位

    Guru Nanak Dev Univ, Dept Elect Technol, Amritsar, Punjab, India;

    Guru Nanak Dev Univ, Dept Elect Technol, Amritsar, Punjab, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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