Ai Yong, Sun Rong, Liao Wei-Qiang, Song Xian-Jiang, Tang Yuan-Yuan, Wang Bing-Wu, Wang Zhe-Ming, Gao Song, Xiong Ren-Gen
Ordered Matter Science Research Center, Nanchang University, Nanchang, 330031, P. R. China.
Beijing National Laboratory for Molecular Sciences, Beijing Key Laboratory for Magnetoelectric Materials and Devices, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, P. R. China.
Angew Chem Int Ed Engl. 2022 Aug 15;61(33):e202206034. doi: 10.1002/anie.202206034. Epub 2022 Jun 13.
Organic-inorganic hybrid perovskites (OIHPs) have gained tremendous interest for their rich functional properties. However, the coexistence of more than one of ferroelectricity, ferromagnetism and ferroelasticity has been rarely found in OIHPs. Herein, we report a two-dimensional Cr -based OIHP, [3,3-difluorocyclobutylammonium] CrCl ([DFCBA] CrCl ), which shows both ferroelectricity and ferromagnetism. It undergoes a 4/mmmFm type ferroelectric phase transition at a temperature as high as 387 K and shows multiaxial ferroelectricity with a saturate polarization of 2.1 μC cm . It acts as a soft ferromagnet with a Curie temperature of 32.6 K. This work throws light on the exploration of OIHPs with the coexistence of ferroelectricity and ferromagnetism for applications in future multifunctional smart devices.
有机-无机杂化钙钛矿（OIHPs）因其丰富的功能特性而备受关注。然而，在OIHPs中很少发现铁电性、铁磁性和铁弹性中的两种以上共存。在此，我们报道了一种二维Cr基OIHPs，[3,3-二氟环丁基铵]CrCl（[DFCBA]CrCl），它同时表现出铁电性和铁磁性。它在高达387 K的温度下经历4/mmmFm型铁电相变，并表现出多轴铁电性，饱和极化强度为2.1 μC cm 。它作为一种软铁磁体，居里温度为32.6 K。这项工作为探索具有铁电性和铁磁性共存的OIHPs在未来多功能智能设备中的应用提供了线索。
