کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886992 | 1509787 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of structural characteristics on microwave dielectric properties of low-loss (Zn1-xNix)ZrNbTaO8 ceramics
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Low-loss (Zn1-xNix)ZrNbTaO8 (0.02â¯â¤â¯xâ¯â¤â¯0.10) ceramics possessing single wolframite structure are initiatively synthesized by solid-state route. Based on the results of Rietveld refinement, complex chemical bond theory is used to establish the correlation between structural characteristics and microwave performance in this ceramic system. A small amount of Ni2+ (xâ¯=â¯0.06) in A-site with the fixed substitution of Ta5+ in B-site can effectually raise the Qâ¯Ãâ¯f value of ZnZrNb2O8 ceramic, embodying a dense microstructure and high lattice energy. The dielectric constant and Ïf are mainly affected by bond ionicity and the average octahedral distortion. The (Zn0.94Ni0.06)ZrNbTaO8 ceramic sample sintered at 1150â¯Â°C for 3â¯h exhibits an outstanding combination of microwave dielectric properties: εr =â¯27.88, Qâ¯Ãâ¯fâ¯=â¯128,951â¯GHz, Ïf =â¯-39.9â¯ppm/°C. Thus, it is considered to be a candidate material for the communication device applications at high frequency.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 11, 1 August 2018, Pages 12414-12419
Journal: Ceramics International - Volume 44, Issue 11, 1 August 2018, Pages 12414-12419
نویسندگان
WeiJia Luo, LingXia Li, Shihui Yu, Qianyu Guo, Bowen Zhang, Zheng Sun,