- P-ISSN 1225-0163
- E-ISSN 2288-8985
강유전체인 <TEX>$LiTaO_3$</TEX> 소재는 SAW filters나 IR sensors의 기본재료로 사용되고 있다. Dopant로서 <TEX>$Al_2O_3$</TEX>를 <TEX>$LiTaO_3$</TEX>에 일부 치환함으로써 유전 특성을 변화시키고 특히 용융점을 낮춤으로써 단결정 제조를 용이하게 한다. X-선 회절분석에 의한 격자상수 변화와 Raman spectroscopy의 band broadening을 측정한 결과 <TEX>$LiTaO_3$</TEX>에 대한 <TEX>$Al_2O_3$</TEX>의 고용한계가 <TEX>$Li_{1-X}Al_{2X}Ta{1-X}O_3$</TEX>에서 X
The upper limit of solid solution of <TEX>$Al_2O_3$</TEX> in <TEX>$LiTaO_3$</TEX> was investigated using X-ray diffraction and Raman spectroscopy. By substituting cations in <TEX>$LiTaO_3$</TEX> with <TEX>$Al^{3+}$</TEX>, the melting temperature was lowed and the ferroelectric properties can be improved. It is easier at lower temperature to fabricate the single crystal used for SAW filters and IR sensors. From the measured lattice constants and Raman band broadening, the solubility limit was X