Electrical tuning of materials' magnetic properties is of great technological interest, and in particular reversible on/off switching of ferromagnetism can enable various new applications. Reversible magnetization tuning in the ferromagnetic Ruddlesden–Popper manganite La_2−2xSr_1+2xMn₂O₇ by electrochemical fluoride‐ion (de)intercalation in an all‐solid‐state system is demonstrated for the first time. A 67% change in relative magnetization is observed with a low operating potential of <1 V, negligible capacity fading, and high Coulombic efficiency. This system offers a high magnetoelectric voltage coefficient, indicating high energy efficiency. This method can also be extended to tune other materials' properties in various perovskite‐related materials.

中文翻译：

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电化学氟离子插层法在铁磁Ruddlesden-Pop型锰铁矿中的可逆磁化调谐

材料的磁性能的电调谐具有重大的技术意义，尤其是铁磁性的可逆通/断切换可以实现各种新应用。铁磁性Ruddlesden-Popper锰铁矿中的可逆磁化调谐La _{2−2 x} Sr _{1 + 2 x} Mn ₂ O ₇首次展示了在全固态系统中通过电化学氟化物离子（脱嵌）进行的嵌入。观察到相对磁化强度有67％的变化，工作电压小于1 V，容量衰减可忽略不计，库仑效率高。该系统提供了较高的磁电电压系数，表明具有较高的能源效率。该方法还可以扩展为在各种钙钛矿相关材料中调整其他材料的性能。