TY - JOUR
T1 - Iron-rich talc as air-stable platform for magnetic two-dimensional materials
AU - Matković, Aleksandar
AU - Ludescher, Lukas
AU - Peil, Oleg E.
AU - Sharma, Apoorva
AU - Gradwohl, Kevin P.
AU - Kratzer, Markus
AU - Zimmermann, Maik
AU - Genser, Jakob
AU - Knez, Daniel
AU - Fisslthaler, Evelin
AU - Gammer, Christoph
AU - Lugstein, Alois
AU - Bakker, Ronald J.
AU - Romaner, Lorenz
AU - Zahn, Dietrich R.T.
AU - Hofer, Ferdinand
AU - Salvan, Georgeta
AU - Raith, Johann G.
AU - Teichert, Christian
N1 - Funding Information:
This work is supported by the Austrian Science fund (FWF) via 2020 START programme (grant no. Y1298 N), by the FWF Lise Meitner fellowship (grant no. M2323 N36), and by an FWF ANR International programme (grant no. I1788 N20). We acknowledge financial support by the “Zukunftsfonds Steiermark” for the K2 camera and funding from the European Union’s Horizon 2020 research program under Grant Agreement No. 823717 ESTEEM3. The authors acknowledge infrastructural support of the Montanuniversitaet Leoben (Raman AFM TERS lab). O.E.P. acknowledges the financial support under the scope of the COMET program within the K2 Center “Integrated Computational Material, Process and Product Engineering (IC-MPPE)” (Project No 859480). This program is supported by the Austrian Federal Ministries for Climate Action, Environment, Energy, Mobility, Innovation and Technology (BMK) and for Digital and Economic Affairs (BMDW), represented by the Austrian research funding association (FFG), and the federal statesof Styria, Upper Austria and Tyrol.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12
Y1 - 2021/12
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/85121543751
U2 - 10.1038/s41699-021-00276-3
DO - 10.1038/s41699-021-00276-3
M3 - Article
AN - SCOPUS:85121543751
SN - 2397-7132
VL - 5
JO - npj 2D Materials and Applications
JF - npj 2D Materials and Applications
IS - 1
M1 - 94
ER -