Open AccessPreparation and microwave dielectric properties of CaTiO3 added Mg0.95Ni0.05Ti0.98Zr0.02O3 composite ceramics for high frequency applications
Author(s) -
Abdul Manan,
Asif Nawaz,
Arbab Safeer Ahmad,
Atta Ullah,
Arshad Hussain Wazir,
Abid Ali Shah
Publication year - 2019
Publication title -
materials science poland
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 32
eISSN - 2083-1331
pISSN - 2083-134X
DOI - 10.2478/msp-2019-0078
Subject(s) - materials science , analytical chemistry (journal) , dielectric , phase (matter) , microwave , ceramic , nuclear chemistry , metallurgy , chemistry , physics , optoelectronics , organic chemistry , chromatography , quantum mechanics
Mg 0.95 Ni 0.05 Ti 0.98 Zr 0.02 O 3 and CaTiO 3 were prepared separately using solid state reaction method. The effect of CaTiO 3 addition on the microwave dielectric properties of Mg 0.95 Ni 0.05 Ti 0.98 Zr 0.02 O 3 was investigated to get low loss and temperature stable ceramics in (1 – x)Mg 0.95 Ni 0.05 Ti 0.98 Zr 0.02 O 3 -xCaTiO 3 series. Mg 0.95 Ni 0.05 Ti 0.98 Zr 0.02 O 3 formed as the major phase along with Mg 0.95 Ni 0.05 Ti 2 O 5 phase that formed as minor secondary phase for the composition with x = 0. Microwave dielectric properties ∈ r ~ 17.1, Q u f o of 195,855 GHz and τ f of –46.3 ppm/°C were obtained for the composition with x = 0. The positive τ f value of CaTiO 3 , tuned the τ f value of Mg 0.95 Ni 0.05 Ti 0.98 Zr 0.02 O 3 through zero and ∈ r ~ 28.4, Q u f o ~ 108,775 GHz and τ f ~ 3.1 ppm/°C were attained for x = 0.15 in this study. This composition is the best choice for high frequency applications.