Microwave dielectric properties of tetragonal scheelite‐structured (NaY) <sub>1/2</sub> MoO <sub>4</sub> ceramics
Xiaolong Wang, Li‐Xia Pang, Di Zhou, Zhen Fang, Sen Ren, Weiguo Liu
Abstract
Abstract (NaY) 1/2 MoO 4 was fabricated via the solid‐state reaction method of Na 2 CO 3 , Y 2 O 3 , and MoO 3 . Scanning electron microscopy results demonstrated that all the (NaY) 1/2 MoO 4 ceramics could be densified well in the sintering temperature range of 900–960°C. Results of X‐ray diffraction analysis demonstrated that the (NaY) 1/2 MoO 4 ceramics crystallized into tetragonal scheelite structure. Sintering (NaY) 1/2 MoO 4 at 940°C for 2 h optimized the microwave dielectric properties of the ceramics. The microwave permittivity, Q × f, and TCF of the (NaY) 1/2 MoO 4 were 10.9, 29 000 GHz and −40.7 ppm/°C, respectively.
Topics & Concepts
Tetragonal crystal systemMaterials scienceScheeliteCeramicSinteringScanning electron microscopeDielectricMicrowaveDiffractionAtmospheric temperature rangeAnalytical Chemistry (journal)MineralogyCrystallographyCrystal structureComposite materialMetallurgyTungstenOpticsOptoelectronicsChemistryOrganic chemistryPhysicsMeteorologyQuantum mechanicsMicrowave Dielectric Ceramics SynthesisFerroelectric and Piezoelectric MaterialsAcoustic Wave Resonator Technologies