Fig. 4. (Color online) The d₃₃ of BiFeO₃ ceramics sintered at (a) 810 °C, (b) 830 °C, and (c) 850 °C.

New Phys.: Sae Mulli 2024;74:1231~1238 https://doi.org/10.3938/NPSM.74.1231

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