A semiconducting layered metal-organic framework magnet

Chongqing Yang, Renhao Dong (), Mao Wang, Petko St. Petkov, Zhitao Zhang, Mingchao Wang, Peng Han, Marco Ballabio, Sascha A. Bräuninger, Zhongquan Liao, Jichao Zhang, Friedrich Schwotzer, Ehrenfried Zschech, Hans-Henning Klauss, Enrique Cánovas, Stefan Kaskel, Mischa Bonn, Shengqiang Zhou, Thomas Heine and Xinliang Feng ()
Additional contact information
Chongqing Yang: Technische Universität Dresden
Renhao Dong: Technische Universität Dresden
Mao Wang: Institute of Ion Beam Physics and Materials Research
Petko St. Petkov: University of Sofia, Faculty of Chemistry and Pharmacy
Zhitao Zhang: Institute of Ion Beam Physics and Materials Research
Mingchao Wang: Technische Universität Dresden
Peng Han: Max Planck Institute for Polymer Research
Marco Ballabio: Max Planck Institute for Polymer Research
Sascha A. Bräuninger: Technische Universität Dresden
Zhongquan Liao: Fraunhofer Institute for Ceramic Technologies and Systems (IKTS)
Jichao Zhang: Chinese Academy of Sciences
Friedrich Schwotzer: Technische Universität Dresden
Ehrenfried Zschech: Fraunhofer Institute for Ceramic Technologies and Systems (IKTS)
Hans-Henning Klauss: Technische Universität Dresden
Enrique Cánovas: Max Planck Institute for Polymer Research
Stefan Kaskel: Technische Universität Dresden
Mischa Bonn: Max Planck Institute for Polymer Research
Shengqiang Zhou: Institute of Ion Beam Physics and Materials Research
Thomas Heine: Technische Universität Dresden
Xinliang Feng: Technische Universität Dresden

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract The realization of ferromagnetism in semiconductors is an attractive avenue for the development of spintronic applications. Here, we report a semiconducting layered metal-organic framework (MOF), namely K3Fe2[(2,3,9,10,16,17,23,24-octahydroxy phthalocyaninato)Fe] (K3Fe2[PcFe-O8]) with spontaneous magnetization. This layered MOF features in-plane full π-d conjugation and exhibits semiconducting behavior with a room temperature carrier mobility of 15 ± 2 cm2 V−1 s−1 as determined by time-resolved Terahertz spectroscopy. Magnetization experiments and 57Fe Mössbauer spectroscopy demonstrate the presence of long-range magnetic correlations in K3Fe2[PcFe-O8] arising from the magnetic coupling between iron centers via delocalized π electrons. The sample exhibits superparamagnetic features due to a distribution of crystal size and possesses magnetic hysteresis up to 350 K. Our work sets the stage for the development of spintronic materials exploiting magnetic MOF semiconductors.

Date: 2019
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DOI: 10.1038/s41467-019-11267-w

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