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Enhanced Magnetoelectric Coupling and Thermal Stability in Nd‐Doped BiFeO 3 Ceramics Near the Morphotropic Phase Boundary

Huantong WuHeilongjiang Provincial Key Laboratory of Plasma Physics and Application Technology Harbin Institute of Technology Harbin ChinaJun LiHeilongjiang Provincial Key Laboratory of Plasma Physics and Application Technology Harbin Institute of Technology Harbin ChinaFuguang HanSchool of Physics Harbin Institute of Technology Harbin ChinaZeyang ZhangSchool of Physics Harbin Institute of Technology Harbin ChinaShuang WangSchool of Physics Harbin Institute of Technology Harbin ChinaDengwei YiHeilongjiang Provincial Key Laboratory of Plasma Physics and Application Technology Harbin Institute of Technology Harbin ChinaRustam AmashaevSchool of Physics Harbin Institute of Technology Harbin ChinaXiping ChenKey Laboratory for Neutron Physics of CAEP Institute of Nuclear Physics and Chemistry Mianyang ChinaGuangai SunKey Laboratory for Neutron Physics of CAEP Institute of Nuclear Physics and Chemistry Mianyang ChinaZhongxiang ZhouSchool of Physics Harbin Institute of Technology Harbin China

2026en

Ochiq kirishBronza

ABI

Annotatsiya

ABSTRACT Multiferroic materials are of interest for multifunctional devices, but achieving strong magnetoelectric (ME) coupling with high thermal stability remains a challenge. In this study, Bi 1‐ x Nd x FeO 3 ceramics were synthesized to investigate the evolution of ME properties via phase boundary engineering. Structural analysis reveals a transition from the polar R3c phase to the antipolar Pbam phase, with the morphotropic phase boundary (MPB) centered around x = 0.16. A significantly enhanced dynamic ME coefficient of approximately 300 µV/(cm·Oe) was observed at this critical composition. Comparative experiments suggest that this enhancement could, to some extent, be attributed to the synergistic effect of piezoelectricity and magnetostriction. Furthermore, the Bi 0.84 Nd 0.16 FeO 3 ceramics exhibit a stable ME response from room temperature up to 480 K and demonstrate potential for four‐state memory applications. These findings underline the role of the MPB in enhancing ME coupling, providing an effective route for developing multiferroic materials with high performance and thermal stability.

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Identifikatorlar

DOI: 10.1111/jace.71293

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