| 光谱学与光谱分析 |
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| Study on Far-Infrared Reflectivity Spectra of Microwave Dielectric Ceramic (RbBi)1/2MoO4 |
| WANG Qiu-ping1,2, LIU Han-chen1 |
1. School of Science, Xi’an Polytechnic University, Xi’an 710048, China
2. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, China |
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Abstract The (RbBi)1/2MoO4 ceramic was prepared via solid state reaction method. The room temperature far-infrared reflectivity spectra were measured and 15 vibration modes were observed. Kramers-Kronig (K-K) relationship was employed to fit infrared spectra. The optical frequency permittivity ε∞ is equal to 2.17 for the dielectric materials, and the extrapolated value to microwave frequency (at about 9 GHz) is 20.56 and it is slightly smaller than the actual measured value ~21.4. The calculated value of quality factor (Q×f) is 11 790 GHz, which is higher than the actual measured value ~6 200 GHz, and it can be deduced that the quality factor of the (RbBi)1/2MoO4 ceramic material has large room for improvement.
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Received: 2012-03-01
Accepted: 2012-06-10
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Corresponding Authors:
WANG Qiu-ping
E-mail: wangjup@163.com
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