NDLI: Structure and microwave dielectric properties of Sm$_{(2−x)/3}$Li$_{ x }$TiO$

Content Provider	SpringerLink
Author	Bian, J. J. Yan, K. Ubic, R.
Copyright Year	2007
Abstract	The structural evolution, and microwave dielectric properties of $$ {\text{Sm}}_{{{{\left( {2 - x} \right)}} \mathord{\left/ {\vphantom {{{\left( {2 - x} \right)}} 3}} \right. -} 3}} {\text{Li}}_{x} {\text{TiO}}_{3} $$ ceramics (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 Sm$_{2}$Ti$_{2}$O$_{7}$ and TiO$_{2}$ 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 Sm$_{2}$T$_{2}$O$_{7}$ 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.
Starting Page	283
Ending Page	288
Page Count	6
File Format	PDF
ISSN	13853449
Journal	Journal of Electroceramics
Volume Number	18
Issue Number	3-4
e-ISSN	15738663
Language	English
Publisher	Springer US
Publisher Date	2007-05-17
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	A-site deficient perovskite Order-disorder Microwave dielectric properties Crystallography Electrochemistry Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Optical and Electronic Materials
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Mechanics of Materials Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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