ORIENTAL JOURNAL OF CHEMISTRY www.orientjchem.org An International Open Free Access, Peer Reviewed Research Journal ISSN: 0970-020 X CODEN: OJCHEG 2016, Vol. 32, No. (6): Pg. 3183-3188 Physico-Chemical Studies of a New Zr-doped BaBeTiO 3 System ABDELHALIM ELBASSET 1,2 *, LAMIAE MRHARRAB 2 , SALAHEDDINE SAYOURI 2 , FARID ABDI 1 and TAJ-DINE LAMCHARFI 1 1 LSSC Department of Electrical Engineering, Faculty of Sciences and Techniques, University Sidi Mohmmed ben Abdelah, Fes, Morocco. 2 LPTA, Physics Department, Faculty of Science University Sidi Mohmmed ben Abdelah, Fes, Morocco *Corresponding author E-mail: elbasset.abdelhalim@gmail.com http://dx.doi.org/10.13005/ojc/320641 (Received: September 01, 2016; Accepted: October 03, 2016) ABSTRACT A series of new type of lead-free ceramics Ba 0.095 Be 0.05 Ti 1-x Zr x O 3 (BBTZx) were prepared using the sol-gel method. X-ray diffraction results show that all powders crystallize in a perovskite-type phase, with the diffraction peaks of the BBTZ x powders shifting toward the smaller 2θ with increasing Zr content. On the other hand secondary phases (ZrO 2 ) were not detected in the diffractograms and the results of fluorescence spectroscopy measurements showed an increase in atomic percent of zirconium and a decrease of that of titanium, showing the incorporation of Zr ions in the BBT in place of Ti ones. The phase transition from tetragonal to cubic phase (T–C) was determined with the help of a new method based on the study of the thermal behavior of Cole-Cole diagrams (ε’’ vs ε’). Keywords: Ceramics Ba 0.095 Be 0.05 Ti 1-x Zr x O 3 , Dielectric, Cole-Cole diagrams (ε’’ vs ε’), Curie temperature (Tc). INTRODUCTION Since the discovery of the phenomenon of ferroelectricity, barium titanate BaTiO 3 was a standard material of the ferroelectric perovskite family. This compound has long been used in many industrial sectors such as electromechanical, the electronic and microwave applications 1,2 and electro- optical devices 3 . One of them, booming, is that of Multilayer Ceramic Capacitors MLCCs (Multilayer Ceramic Capacitors) 4-11 . An interesting and very current application of BaTiO 3 also relates to making computer memory frams (Ferroelectric Random Access Memories) 12 , the detection of polluting gases such as CO 13 the optical waveguides, and holographic storage high frequency filters ...) 14-17 0 and the spatial light modulators 18 . This pure lead- free material and also strontium-doped, has a high environmental interest for applications mentioned above, due to its high dielectric constant value