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Magnetizing lead-free halide double perovskites

DOI: 10.1126/sciadv.abb5381 DOI Help

Authors: Weihua Ning (Linköping University) , Jinke Bao (Argonne National Laboratory) , Yuttapoom Puttisong (Linköping University) , Fabrizo Moro (Linköping University) , Libor Kobera (Institute of Macromolecular Chemistry of the Czech Academy of Sciences) , Seiya Shimono (National Defense Academy) , Linqin Wang (KTH Royal Institute of Technology) , Fuxiang Ji (Linköping University) , Maria Cuartero (KTH Royal Institute of Technology) , Shogo Kawaguchi (Japan Synchrotron Radiation Research Institute (JASRI), SPring-8) , Sabina Abbrent (Institute of Macromolecular Chemistry of the Czech Academy of Sciences) , Hiroki Ishibashi (Osaka Prefecture University) , Roland De Marco (University of the Sunshine Coast) , Irina A. Bouianova (Linköping University) , Gaston A. Crespo (KTH Royal Institute of Technology) , Yoshiki Kubota (Osaka Prefecture University) , Jiri Brus (Institute of Macromolecular Chemistry of the Czech Academy of Sciences) , Duck Young Chung (Argonne National Laboratory) , Licheng Sun (KTH Royal Institute of Technology; Westlake University) , Weimin M. Chen (Linköping University) , Mercouri G. Kanatzidis (Argonne National Laboratory; Northwestern University) , Feng Gao (Linköping University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Science Advances , VOL 6

State: Published (Approved)
Published: November 2020
Diamond Proposal Number(s): 20805

Open Access Open Access

Abstract: Spintronics holds great potential for next-generation high-speed and low–power consumption information technology. Recently, lead halide perovskites (LHPs), which have gained great success in optoelectronics, also show interesting magnetic properties. However, the spin-related properties in LHPs originate from the spin-orbit coupling of Pb, limiting further development of these materials in spintronics. Here, we demonstrate a new generation of halide perovskites, by alloying magnetic elements into optoelectronic double perovskites, which provide rich chemical and structural diversities to host different magnetic elements. In our iron-alloyed double perovskite, Cs2Ag(Bi:Fe)Br6, Fe3+ replaces Bi3+ and forms FeBr6 clusters that homogenously distribute throughout the double perovskite crystals. We observe a strong temperature-dependent magnetic response at temperatures below 30 K, which is tentatively attributed to a weak ferromagnetic or antiferromagnetic response from localized regions. We anticipate that this work will stimulate future efforts in exploring this simple yet efficient approach to develop new spintronic materials based on lead-free double perovskites.

Subject Areas: Materials, Physics, Chemistry

Instruments: I19-Small Molecule Single Crystal Diffraction

Other Facilities: BL02B2 at SPring-8; Elettra Synchrotron


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