Lead-Free BiFeO 3 –BaTiO 3 Ceramics: An Overview Naveen Kumar, Gulshan Dhillon, Ranvir Singh Panwar, Indu Sharma, and Anupreet Kaur Bhatia Abstract Multiferroic materials based on BiFeO 3 show properties like ferroelec- tricity and ferromagnetism at the same time. Inclination towards materials that are environment friendly, overcomes the problems related to lead-based materials. BiFeO 3 –BaTiO 3 binary system entirely takes the charge over lead enrich materials. The binary system of BaTiO 3 and BiFeO 3 consists of lead-free materials having char- acteristic properties like high piezoelectric coefficient, high Curie temperature, and the existence of morphotropic phase boundary (MPB). The studies were carried on the BiFeO 3 –BaTiO 3 multiferroic system from the last decade. BiFeO 3 –BaTiO 3 system exhibits outstanding electrical applications in devices such as actuators, multilayer capacitors, flexible display, and memory devices. The present chapter discusses some basics of multiferroics, specially BiFeO 3 ceramic, misfortune related to BiFeO 3 and BiFeO 3 –BaTiO 3 binary systems are addressed. Keywords Multiferroic materials · BiFeO 3 –BaTiO 3 binary system · Piezoelectricity · Ferroelectricity N. Kumar (B ) Department of Applied Sciences, Punjab Engineering College (Deemed To Be University), Chandigarh, India G. Dhillon Institute of Engineering and Technology, Chitkara University, Punjab, India R. S. Panwar Department of Metallurgical and Materials Engineering, Punjab Engineering College (Deemed To Be University), Chandigarh, India I. Sharma Department of Physics, Career Point University, Hamirpur, HP, India A. K. Bhatia Department of Physics, Goswami Ganesh Dutta Sanatan Dharma College, Chandigarh, India © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021 G. K. Bhargava et al. (eds.), Ferrites and Multiferroics, Engineering Materials, https://doi.org/10.1007/978-981-16-7454-9_11 181