Materials with low-magnetic-field control at room temperature is of fundamental importance for the practical application. Herein, a chiral 1D-coordination-polymer ([Ni(DPA) 2 (H 2 O)]) possessing coupled ferroelectric and ferromagnetic order is constructed. In addition, [Ni(DPA) 2 (H 2 O)] exhibits room-temperature ferroelectricity with giant magnetodielectric coefficency between −18% and −23% in the temperature range from 270 to 310 K, in nearly all measured frequencies, and under applied magnetic field as low as 0.5 T. The asymmetrical distortion of the coordination bond spurs electrical polarization and magnetodielectric effect, and reduces spin frustration in the octahedral geometry due to spin-lattice coupling. In addition, 2D nanosheets with non-centrosymmetric structure can be successfully exfoliated from [Ni(DPA) 2 (H 2 O)] microcrystals in retaining the morphological and structural integrity. This observation revea...

中文翻译：

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手性层状二苯丙氨酸基一维配位聚合物在室温下的低磁场控制磁电耦合

在室温下具有低磁场控制的材料对于实际应用至关重要。在此，构建具有铁电和铁磁顺序耦合的手性1D配位聚合物（[Ni（DPA）2（H 2 O）]）。此外，[Ni（DPA）2（H 2 O）]表现出室温铁电性，在几乎所有测得的频率和温度范围内，在270至310 K的温度范围内，其巨磁电系数介于-18％和-23％之间。施加的磁场低至0.5T。配位键的不对称畸变会刺激极化和磁电效应，并减少由于自旋-晶格耦合而导致的八面体几何体的自旋受挫。此外，具有非中心对称结构的2D纳米片可以成功地从[Ni（DPA）2（H 2 O）]微晶中剥落，以保持形态和结构完整性。这个观察表明...