The present study provides detailed temperature-dependent measurements for the relaxor composition of isovalent (Hf4+) substituted BaTiO3 (BTO), specifically BaTi0.6Hf0.4O3. The observations reveal distinct structural modifications associated with its dielectric maxima. By combining these results with our earlier findings on Sn4+ substituted BTO (Surampalli et al., 2019; Dhanetwal et al., 2024), the study highlights the critical role of atomic-scale structural changes in determining the relaxor properties of iso-valent substituted BTO-based materials. These insights contribute to a deeper understanding of relaxors, offering valuable guidance for the development of lead-free relaxors beyond phenomenological models.
Dhanetwal, M., Mirshahi, R., Surampalli, A., Prajapat, D., Meneghini, C., Raghavendra Reddy, V. (2025). On the local structural modifications in iso-valent substituted barium titanate based relaxors : Study of BaTi0.6Hf0.4O3 ceramic. JOURNAL OF ALLOYS AND COMPOUNDS, 1040 [10.1016/j.jallcom.2025.183338].
On the local structural modifications in iso-valent substituted barium titanate based relaxors : Study of BaTi0.6Hf0.4O3 ceramic
Mirshahi, Roxana;Meneghini, Carlo
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2025-01-01
Abstract
The present study provides detailed temperature-dependent measurements for the relaxor composition of isovalent (Hf4+) substituted BaTiO3 (BTO), specifically BaTi0.6Hf0.4O3. The observations reveal distinct structural modifications associated with its dielectric maxima. By combining these results with our earlier findings on Sn4+ substituted BTO (Surampalli et al., 2019; Dhanetwal et al., 2024), the study highlights the critical role of atomic-scale structural changes in determining the relaxor properties of iso-valent substituted BTO-based materials. These insights contribute to a deeper understanding of relaxors, offering valuable guidance for the development of lead-free relaxors beyond phenomenological models.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
