ISSN: 2319- 8753 International Journal of Innovative Research in Science, Engineering and Technology (An ISO 3297: 2007 Certified Organization) Vol. 3, I ssue 6, June 2014 Copyright to IJIRSET www.ijirset.com 14084 Systematic Study of Reaction Involved In Formation of Barium Magnesium Tantalate When Synthesized By Solid State Route N.Saraf 1 , R.V.Kashalkar 2 , M.Y.Khaladkar 3 , I.S.Mulla 4 , R. Purandare 5 . PhD Student, Dept of Chemistry, S.P. College, Pune, Maharashtra, India 1 Head, Dept of Chemistry, S.P. College, Pune, Maharashtra, India 2 Associate Professor, Dept. of Applied Science, College of Engineering, Pune , Maharashtra, India 3 CSIR Emeritus Scientist, Centre for Materials for Electronic Technology, Pune, Maharashtra, India 4 PhD Student, Dept. of Applied Science, College of Engineering, Pune, Maharashtra, India 5 ABSTRACT: Barium Magnesium Tantalate (Ba(Mg 1/3 Ta 2/3 )O 3 ) is ABO 3 type perovskite material. It is fetching more attention of researchers as material for dielectric resonator and is used in satellite communication. The dominant mode of synthesis of this material is solid state route. In the present work TG/DTA has been carried out of the raw material in the temperature range from 30 to 1400 0 C. In TG 3 major weight-loss steps are observed till 1000 0 C with a total loss of 22% followed by weight gain of 18% in the temperature range 1000 to 1300 0 C and then weight loss continued till 1400 0 C and finally the stable composition showed a weight loss of 8%. This observation is supported by DTA which showed a broad endotherm till 200 suggesting loss of adsorbed water followed by a short endotherm at 350 0 C, a sharp endotherm at 800C suggesting decomposition of Barium Carbonate. Enthalpy of the reaction mixture seems to rise quickly after the decomposition leading to ternary phase formation. The chemical composition changes rapidly after 1100 till 1200 C suggesting rapid uptake of oxygen. The sharp and significant endotherm observed between 1120 to 1200 0 C suggested that at 1200 0 C majority of the reactions taking place in the reaction mixture are over. Highest oxygen stoichiometry appeared at temperature 1300 0 C. Considering this, material was calcined at temperatures 950, 1200 2 hrs, 1200 18hrs, 1200 18 hrs (total 36 hrs) and 1300 2hrs. At every stage some amount of material was taken out and subjected for XRD. Crystallite size observed to be increasing from 200 to 331 A 0 at temperature 950 to 1300 0 C respectively. KEY WORDS: BMT, TG/DTA, calcination, XRD, crystallite size. I . INTRODUCTION An advance in wireless communication has become need of time. With advances in wireless technology one can get connected with any corner of the world in few seconds of time, one can even have seamless communication for long duration in any corner of world etc. This globalization is the outcome of extensive research in the miniaturization of materials which is getting used in the device. Barium magnesium tantalate (Ba (Mg 1/3 Ta 2/3 )O 3 ) is a very popular material for dielectric resonator. Low temperature, low cost and bulk quantity synthesis is still a challenge for researchers. This paper reports about the systematic study of reactions involved in synthesis of (Ba (Mg 1/3 Ta 2/3 )O 3 ) when synthesized by solid state route.