caa a22 4500 52878515X 20190713030951.0 cr unu---uuuuu 180924s2016 xx s 000 0 eng 10.3929/ethz-b-000113730 doi 10.1038/ncomms10467 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/113730 A four-coordinate cobalt(II) single-ion magnet with coercivity and a very high energy barrier [Elektronische Daten] [Yvonne Rechkemmer, Frauke D. Breitgoff, Margarethe Van der Meer, Mihail Atanasov, Michael Hakl, Milan Orlita, Petr Neugebauer, Frank Neese, Biprajit Sarkar, Joris Van Slageren] Nat Commun Open access ethresearch Single-molecule magnets display magnetic bistability of molecular origin, which may one day be exploited in magnetic data storage devices. Recently it was realised that increasing the magnetic moment of polynuclear molecules does not automatically lead to a substantial increase in magnetic bistability. Attention has thus increasingly focussed on ions with large magnetic anisotropies, especially lanthanides. In spite of large effective energy barriers towards relaxation of the magnetic moment, this has so far not led to a big increase in magnetic bistability. Here we present a comprehensive study of a mononuclear, tetrahedrally coordinated cobalt(II) single-molecule magnet, which has a very high effective energy barrier and displays pronounced magnetic bistability. The combined experimental-theoretical approach enables an in-depth understanding of the origin of these favourable properties, which are shown to arise from a strong ligand field in combination with axial distortion. Our findings allow formulation of clear design principles for improved materials. Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 ethresearch Physical sciences ethresearch Condensed matter ethresearch Rechkemmer Yvonne joint author Breitgoff Frauke D. joint author Van der Meer Margarethe joint author Atanasov Mihail joint author Hakl Michael joint author Orlita Milan joint author Neugebauer Petr joint author Neese Frank joint author Sarkar Biprajit joint author Van Slageren Joris joint author Nature Communications London : Nature Publishing Group 7, p. 10467 2041-1723 http://hdl.handle.net/20.500.11850/113730 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/113730 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 700 1- Rechkemmer Yvonne joint author ETHRESEARCH 700 1- Breitgoff Frauke D. joint author ETHRESEARCH 700 1- Van der Meer Margarethe joint author ETHRESEARCH 700 1- Atanasov Mihail joint author ETHRESEARCH 700 1- Hakl Michael joint author ETHRESEARCH 700 1- Orlita Milan joint author ETHRESEARCH 700 1- Neugebauer Petr joint author ETHRESEARCH 700 1- Neese Frank joint author ETHRESEARCH 700 1- Sarkar Biprajit joint author ETHRESEARCH 700 1- Van Slageren Joris joint author ETHRESEARCH 773 0- Nature Communications London : Nature Publishing Group 7, p. 10467 2041-1723 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access