Iron-rich talc as air-stable platform for magnetic two-dimensional materials
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
Autoren
Organisationseinheiten
Externe Organisationseinheiten
- Materials Center Leoben Forschungs GmbH
- Technische Universität Wien
- Zentrum für Elektronenmikroskopie Graz
- Technische Universität Graz
- Erich-Schmid-Institut für Materialwissenschaft der Österreichischen Akademie der Wissenschaften
- Technische Universität Chemnitz
Abstract
Intrinsically magnetic layered materials – especially monolayers – suffer from the lack of ambient stability and mostly exhibit magnetic ordering only at cryogenic temperatures. These restrains impose a great challenge for the integration of two-dimensional magnetic materials into future technologies. We propose to overcome this by exploiting phyllosilicates, such as iron-rich talc. Via combined magnetic force microscopy in applied external magnetic fields, superconducting quantum interference device magnetometry, first-principle calculations, and structural analysis, we demonstrate that incorporated iron ions in talc are in a very robust high spin state, resulting in a weak ferromagnetic behavior at room temperature. Iron-rich talc can be thinned down to a monolayer, remaining fully stable under ambient conditions, and retaining magnetic properties even in monolayers. Finally, we propose iron-rich end members of the phyllosilicates as very promising platforms for air-stable magnetic monolayers.
Details
Originalsprache | Englisch |
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Aufsatznummer | 94 |
Seitenumfang | 9 |
Fachzeitschrift | npj 2D materials and applications |
Jahrgang | 2021 |
Ausgabenummer | 5 |
DOIs | |
Status | Elektronische Veröffentlichung vor Drucklegung. - 21 Dez. 2021 |