Title of article :
The Effects of ZnO Additive on Sintering Behavior, Microstructural Evolution and Microwave Dielectric Properties of Li2TiO3 Ceramics
Author/Authors :
Ebadzadeh, T t-ebadzadeh@merc.ac.ir , Ghaffari, S Department of Ceramics - Materials and Energy Research Center - Karaj - Alborz, Iran , Alizadeh, M Department of Ceramics - Materials and Energy Research Center - Karaj - Alborz, Iran , Asadian, K Department of Semiconductors - Materials and Energy Research Center - Karaj - Alborz, Iran , Ganjkhanlou, Y Department of Physical Chemistry - Faculty of Chemical Technology - University of Pardubice - Pardubice, Czech Republic
Abstract :
The densication behavior, structural and microstructural evolution and microwave dielectric properties of
Li2TiO3 + xZnO (x = 0, 0.5, 1, 1.5, 2, 3, and 5 mol%) ceramics have been investigated using X-ray diffraction, eld
emission scanning electron microscopy, raman spectroscopy and microwave resonant measurement. The Maximum
density of 3.33 g/cm3 was obtained in Li2TiO3 + 2ZnO ceramic at low sintering temperature of 1100˚C. Scanning
electron microscopy investigations revealed good close packing of grains when x = 2 and preferential grain growth
when x ≥ 3. The maximum value of Q × f and r were 31800 GHz and 22.5 in Li2TiO3 + 3ZnO and Li2TiO3 + 2ZnO
compositions, respectively. The observed properties are attributed to the microstructural evolution and grain growth
(rst case) or high density of the obtained ceramic (second case).
Keywords :
Sintering , Microstructure , Microwave dielectric properties , Li2TiO3, ZnO addition
Journal title :
Astroparticle Physics
