Publication Date:
2011-07-20
Description:
In the present work, a pure monoclinic phase of BaNd 2 (MoO 4 ) 4 and BaSm 2 (MoO 4 ) 4 was formed at 850°C and 600°C, respectively, via a solid-state reaction method. The ceramic samples were found to be well densified at 960°C. Dense and homogeneous microstructures were revealed from the scanning electron microscopy. The microwave dielectric behaviors were studied as a function of sintering temperature and characterized in the temperature range 25°C–120°C. The best properties were obtained in ceramics sintered at 960°C with a permittivity ~11.7, a Q × f value of 45 000 GHz and a temperature coefficient of frequency about −41 ppm/°C for BaNd 2 (MoO 4 ) 4 ceramic at 9.9 GHz, and a permittivity ~11.8, a Q × f value of 20 000 GHz, and a temperature coefficient of frequency about −34 ppm/°C for BaSm 2 (MoO 4 ) 4 ceramic at 9.7 GHz, respectively.
Print ISSN:
0002-7820
Electronic ISSN:
1551-2916
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
