Abstract The room-temperature magnetoelastic coupling has been demonstrated in (x)NiFe2O4 + (1 − x)BaTiO3 (where x = 0–1 with a difference of 0.1) composite system by investigating its structural, magnetic and ferroelectric properties. The samples were prepared by the standard solid-state reaction method and characterized by x-ray diffraction, backscattered scanning electron microscopy and energy dispersive x-ray spectroscopy techniques. The temperature dependent magnetization data clearly show significant jumps in magnetization curves at structural phase transitions of BaTiO3, signifying the strain-mediated converse magnetoelectric (CME) coupling in NiFe2O4-BaTiO3 multiferroic system. The substantial changes observed in the obtained parameters from structural, magnetic and ferroelectric properties clearly ensure the strain-mediated magnetoelectric (ME) as well as CME effects in this system. The present investigation indicates that the NiFe2O4-BaTiO3 composite system will be a potential candidate for the future low-power consumption device applications at room temperature.

中文翻译：

---

多铁性 NiFe2O4-BaTiO3 复合材料的结构、磁性和电学性能

摘要 通过研究其结构、磁性和铁电性质，在 (x)NiFe2O4 + (1 − x)BaTiO3（其中 x = 0–1，差异为 0.1）复合系统中证明了室温磁致弹性耦合。样品通过标准固态反应方法制备，并通过 X 射线衍射、背散射扫描电子显微镜和能量色散 X 射线光谱技术表征。随温度变化的磁化数据清楚地显示了 BaTiO3 结构相变处磁化曲线的显着跳跃，这表明 NiFe2O4-BaTiO3 多铁系统中存在应变介导的逆磁电 (CME) 耦合。从结构获得的参数中观察到的实质性变化，磁性和铁电特性清楚地确保了该系统中应变介导的磁电 (ME) 和 CME 效应。目前的研究表明，NiFe2O4-BaTiO3 复合系统将成为未来室温下低功耗器件应用的潜在候选者。