This paper discusses the difference in permittivity at infrared frequencies between Ba(Mg 1/3 Ta 2/3 )O 3 (BMT) and Ba(Mg 1/3 Nb 2/3 )O 3 (BMN) based on a first-principles calculation. The permittivity, far-infrared and Raman spectra are successfully computed. Analysis of these results shows that th
โฆ LIBER โฆ
Long-wavelength phonons and effective charges in complex perovskite compounds Ba(Mn1/3Ta2/3)O3and Ba(Ni1/3Ta2/3)O3
โ Scribed by K. Tochi; T. Ohgaku; N. Takeuchi
- Publisher
- Springer
- Year
- 1989
- Tongue
- English
- Weight
- 214 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0261-8028
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Ba(Mg 1/3 Ta 2/3 )O 3 ceramic possessing extremely high Q ร f value of more than 300 THz at microwave frequency was developed in our previous study. It is of great interest to understand the mechanism of microwave absorption in such a practical material. In the present study we report on the tempera