Impact of the Lead‐Free Crystal Matrix 0.94NBaTiO 3 ‐0.06SrTiO 3 on the Photoluminescence Properties of Eu +3

• Published in: physica status solidi (b)
• Main Authors: Rao, Paritala Raghava, Raju, V., N, Giridhar Babu, Srikanth, B., Kiran, G. Bhanu, Pushpalatha, Kavuluri, Gudiguntla, Ravi, Juvvala, Simhadri Raju, Babu, A. Chitti, Ramesh Babu, N. Ch
• Format: Journal Article
• Language: English
• Published: 18-11-2024
• ISSN: 0370-1972; 1521-3951
• DOI: 10.1002/pssb.202400267

The investigation reveals that the crystal field environment induces photoluminescence in Eu 3+ . These synthesized materials hold promise for a wide array of commercial applications, particularly in the light emitting diode industry, representing a significant advancement for the current generation of technology. The lead‐free electroceramics 0.94NB 1− x Eu x TiO 3 ‐0.06SrTiO 3 ( x = 0 and x = 0.1) are fabricated using the conventional solid‐state reaction technique. Within these ceramics, both rhombohedral (R3c) and tetragonal (P4mm) structural phases coexist. The structural conformation and fluctuations in average grain size indicate the successful substitution of Eu 3+ in 0.94NB 1− x TiO 3 ‐0.06SrTiO 3 ( x = 0). The incorporation of Eu 3+ ions into the host matrix induces a long‐range ferroelectric state, marked by a rhombohedral (R3c) distortion, alongside enhanced tetragonal (P4mm) features. This structural modification results from the interaction between the Eu 3+ ions and the host lattice, which fosters the emergence of a ferroelectric polarization. The coexistence of rhombohedral and tetragonal symmetries suggests a complex interplay of phases that collectively enhance the material's ferroelectric properties, potentially offering new avenues for applications in electronic and optical devices. Notably, compared to 0.94NB 1− x Eu x TiO 3 ‐0.06SrTiO 3 with ( x = 0), the coercive field ( E c ) significantly improves, while remanent polarization decreases in the presence of Eu 3+ . The domain orientation, particularly in Stage‐C, demonstrates a pronounced scaling behavior, which can be attributed to the crystal field surrounding the Eu 3+ ions. This interaction influences the material's domain dynamics, enhancing its electromechanical properties. As a result, both of these lead‐free ceramics exhibit considerable potential for future electroceramic applications, offering a promising alternative in environmentally sustainable technologies.