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A semiconducting layered metal-organic framework magnet

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 K(3)Fe(2)[(2,3,9,10,16,17,23,24-octahydroxy phthalocyaninato)Fe] (K(3)Fe(2)[PcFe-O(8)]) with spon...

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Detalles Bibliográficos
Autores principales: Yang, Chongqing, Dong, Renhao, Wang, Mao, Petkov, Petko St., Zhang, Zhitao, Wang, Mingchao, Han, Peng, Ballabio, Marco, Bräuninger, Sascha A., Liao, Zhongquan, Zhang, Jichao, Schwotzer, Friedrich, Zschech, Ehrenfried, Klauss, Hans-Henning, Cánovas, Enrique, Kaskel, Stefan, Bonn, Mischa, Zhou, Shengqiang, Heine, Thomas, Feng, Xinliang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6646349/
https://www.ncbi.nlm.nih.gov/pubmed/31332187
http://dx.doi.org/10.1038/s41467-019-11267-w
Descripción
Sumario: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 K(3)Fe(2)[(2,3,9,10,16,17,23,24-octahydroxy phthalocyaninato)Fe] (K(3)Fe(2)[PcFe-O(8)]) 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 cm(2) V(−1) s(−1) as determined by time-resolved Terahertz spectroscopy. Magnetization experiments and (57)Fe Mössbauer spectroscopy demonstrate the presence of long-range magnetic correlations in K(3)Fe(2)[PcFe-O(8)] 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.