Abstract
B-site Manganese (Mn) substituted ferroelectric potassium sodium niobate (KNN) ceramics having compositional formula K0.5Na0.5MnxNb1−xO3 (KMNN) with x values 2, 4, and 6% were prepared by conventional mixed oxide process. Substitution of Mn4+ into KNN also maintained orthorhombic symmetry confirmed from XRD. Ferroelectric properties of substituted samples were investigated by recording P–E hysteresis loops with increasing temperature up to 120 °C. Hysteresis loops with varying temperatures for all materials showed considerable changes in ferroelectric nature. The Mn-substitution improves the ferroelectric parameters like coercive field (Ec), remnant polarization (Pr) and squarness (Pr/Ps) of KNN and also shows the high temperature stability which is good for memory device applications.
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Acknowledgments
Asha Dahiya would like to thank ECR Lab., G.V.M Girls College Sonepat for providing research facilities.
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Dahiya, A., Thakur, O.P., Singh, A.K. (2022). Ferroelectric Behavior of Mn Substituted KNN Ceramics. In: Krupanidhi, S.B., Gupta, V., Sharma Kaushik, A., Singh, A.K. (eds) Advanced Functional Materials and Devices. Springer Proceedings in Materials, vol 14. Springer, Singapore. https://doi.org/10.1007/978-981-16-5971-3_25
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DOI: https://doi.org/10.1007/978-981-16-5971-3_25
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