Structure and Microwave Dielectric Properties of Sm(2− x )/3Li x TiO3

Authors

J. J. Bian, Shanghai University
K. Yan, Shanghai University
Rick Ubic, Boise State UniversityFollow

Document Type

Article

Publication Date

8-1-2007

Abstract

The structural evolution, and microwave dielectric properties of \textSm_{( 2 - x ) \mathord / \vphantom ( 2 - x ) 3 3} \textLi_x \textTiO₃ Missing dimension or its units for \kernceramics (x = 0.0 ≤ x ≤ 0.5) were investigated in this work. X-ray diffraction (XRD) results show that samples with x > 0.3 exhibit a single perovskite phase. Impurity phases of Sm₂Ti₂O₇ and TiO₂ appear and their amount increases with the decrease of x when x ≤ 0.3. TEM observation indicates that the A-site is ordered in x = 0.5, but not in x = 0.3). The dielectric constant decreases with the increase of x for 0.1 ≤ x ≤ 0.4 and then increases with further increase in x up to x = 0.5. The Q×f value decreases with the decrease of x due to the increased occurrence of Sm₂T₂O₇ secondary phase, defects and twinning boundaries. The temperature coefficient of resonant frequency is negative and its absolute value decreases greatly with the decrease of x value.

Publication Information

Bian, J. J.; Yan, K.; and Ubic, Rick. (2007). "Structure and Microwave Dielectric Properties of Sm(2− x )/3Li x TiO3". Journal of Electroceramics, 18(3-4), 283-288. https://doi.org/10.1007/s10832-007-9126-2