Ca_(0.95-x)Cu_(0.05)(Na_(0.5)Bi_(0.5))xMoO_(4)微波介质陶瓷的制备及性能

Preparation and Properties of Ca_(0.95-x)Cu_(0.05)(Na_(0.5)Bi_(0.5))xMoO_(4) Microwave Dielectric Ceramics

随着当下5G和6G技术的高速发展,开发出具有适中的介电常数,较高的品质因数,接近0的谐振频率温度系数的陶瓷已是当下研究的重点。通过固相法制备Ca_(0.95–x)Cu_(0.05)(Na_(0.5)Bi_(0.5))_(x)Mo O_(4)微波介质陶瓷,研究烧结温度和组分变化对陶瓷微波介电性能的影响。当烧结温度为640℃、x为0.5时综合微波介电性能较好,此时陶瓷的εr=15.8,Qf=21361 GHz,τf=?3.8×10?6/℃。通过X射线衍射仪、Raman光谱仪、扫描电子显微镜研究了微波介电性能变化的机理。Ca_(0.45)Cu_(0.05)(Na_(0.5)Bi_(0.5))0.5Mo O_(4)陶瓷与Al电极共烧结果显示有较好的相容性,表明Ca_(0.95-x)Cu_(0.05)(Na_(0.5)Bi_(0.5))_(x)MoO_(4)陶瓷具有作为低温共烧微波介质陶瓷材料的应用潜力。

With the rapidly development of 5G and 6G technologies,developing ceramics with a moderate dielectric constant,a high quality factor,and a resonant frequency temperature coefficient close to O becomes a research hotspot.A novel series of microwave dielectric ceramics Ca_(0.95-x)Cu_(0.05)(Na_(0.5)Bi_(0.5))xMoO_(4) were synthesized by a solid-state reaction method.The influences of sintering temperature and component change on the microwave dielectric properties were investigated.The ceramic property was analyzed by X-ray diffraction,Raman spectroscopy,and scanning electron microscopy.The results show that the&of Ca_(0.95-x)Cu_(0.05)(Na_(0.5)Bi_(0.5))xMoO_(4) ceramic with NB content of 0.5 sintered at 640 C is 15.8,Qr is 21361 GHz,and t is 3.8x10^(-6)/C.Also,Ca_(0.95-x)Cu_(0.05)(Na_(0.5)Bi_(0.5))xMoO_(4) ceramic is compatible with Al electrode,indicating that Ca_(0.95-x)Cu_(0.05)(Na_(0.5)Bi_(0.5))xMoO_(4) ceramic has a great potential application as a low-temperature co-fired ceramic material.