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Dielectric response of ANb_(2)O_(6)(A = Zn, Co, Mn, Ni) columbite niobates: From microwave to terahertz

Journal of Advanced Ceramics 2024年第8期13卷 1189-1197页

作者： Weijia Luo Shun Wang Siyong Zheng Jining Li Menglong Wang Yongzheng Wen ingxia Li Ji Zhou State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Institute of Laser and Optoelectronics School of Precision Instrument and Opto-Electronics EngineeringTianjin UniversityTianjin 300072China Shandong Inspur Artificial Intelligence Research Institute Co. Ltd.Jinan 250013China School of Microelectronics Tianjin UniversityTianjin 300072China

In the upcoming 6-generation(6G)revolution,the achievement of low power consumption has become a key objective in research concerning terahertz *** an important component of passive devices,there are very few low-loss dielectric ceramics in the terahertz *** elucidate the mechanism of loss and promote the application of microwave dielectric ceramics for future 6G technology(covering microwave and terahertz frequencies),the terahertz responses of ANb_(2)O_(6)(A=Zn,Co,Mn,and Ni)columbite niobates were *** influences of magnetic loss on the Qxf values in the microwave range with different transition metal ions in the A-site were reasonably ***,due to the weakened magnetic relaxation properties in the terahertz range,the samples all exhibited low loss and approximate transparency,especially for MnNb_(2)O_(6) and NiNb_(2)O_(6)(tano<0.01 and absorption coefficient<10 cm^(-1) below 1.2 THz),which subverted the definition of traditional low-loss microwave dielectric ***,based on Mie theory,we designed a prototypical broadband metamaterial reflector to validate the applicability of the ANb_(2)O_(6) system in the terahertz band,which is highly important for the development of terahertz ceramic-based passive devices.

关键词： columbite niobates terahertz response transition metal ions magnetic loss ceramic-based metamaterials

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