Preparation and microwave dielectric properties of CaTiO3 added Mg0.95Ni0.05Ti0.98Zr0.02O3 composite ceramics for high frequency applications

Author:

Manan Abdul1,Nawaz Asif1,Ahmad Arbab Safeer23,Ullah Atta3,Wazir Arshad Hussain4,Shah Abid A.5

Affiliation:

1. Laboratory for Research in Advanced Materials , Department of Physics , University of Science and Technology Bannu , 28100 , Khyber Pakhtunkhwa, Pakistan

2. Departments of Physics , Islamia College Peshawar , 25120 , Khyber Pakhtunkhwa, Pakistan

3. Center of Materials Science , Islamia College Peshawar , 25120 , Khyber Pakhtunkhwa, Pakistan

4. Departments of Chemistry , University of Science and Technology Bannu , 28100 , Khyber Pakhtunkhwa, Pakistan

5. Department of Civil Engineering , International Islamic University , Islamabad , Pakistan

Abstract

Abstract Mg0.95Ni0.05Ti0.98Zr0.02O3 and CaTiO3 were prepared separately using solid state reaction method. The effect of CaTiO3 addition on the microwave dielectric properties of Mg0.95Ni0.05Ti0.98Zr0.02O3 was investigated to get low loss and temperature stable ceramics in (1 – x)Mg0.95Ni0.05Ti0.98Zr0.02O3-xCaTiO3 series. Mg0.95Ni0.05Ti0.98Zr0.02O3 formed as the major phase along with Mg0.95Ni0.05Ti2O5 phase that formed as minor secondary phase for the composition with x = 0. Microwave dielectric properties ∈r ~ 17.1, Qufo of 195,855 GHz and τf of –46.3 ppm/°C were obtained for the composition with x = 0. The positive τf value of CaTiO3, tuned the τf value of Mg0.95Ni0.05Ti0.98Zr0.02O3 through zero and ∈r ~ 28.4, Qufo ~ 108,775 GHz and τf ~ 3.1 ppm/°C were attained for x = 0.15 in this study. This composition is the best choice for high frequency applications.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

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