Magnetic and Electric Properties of Pbtio3- Y3Fe5O12 Ceramic Composites

Abstract

The aim of the work is to fabricate the (1-x) PbTiO₃ (PT) - x Y₃Fe₅O₁₂ (YIG), where x takes values of 20, 30, 65, and 80, using the standard solid-state sintering method, with ball milling employed to mix the components before sintering at 1000°C. The structural and magnetic properties of the composites were then evaluated. The results demonstrate PT and YIG phases coexist without any secondary phase. The observed Raman active mode confirms the presence of cubic and tetragonal phases of YIG and PT. SEM photographs have shown both larger spherical and small shape grains. The magnetic and electrical characteristics are determined by the ferroelectric and magnetic hysteresis loops. The composite exhibits a maximum saturation magnetization of approximately 27 emu/g for higher YIG and lower PT (80 YIG-20PT) content among all the composites.  PT is well-known toxic material; however, one cannot replace this material to another lead-free material. To achieve environment-friendly, non-lead material such as YIG-based PT composites are being prepared. Based on the law of approach to saturation (LAS) and ferroelectric hysterics loops, it is concluded that the strong magnetic and electric coupling interaction for 80YIG-20PT acts as a key role and helpful to fabricate the multi-dielectric or magnetodielectric device.