| MICHAL, Lukáš, Rajarshi ROY, David HOLEC, Inmaculada Jennifer GOMEZ PEREZ, Naděžda PIZÚROVÁ, David NEČAS, Anna DOLEČKOVÁ, Jiřina MEDALOVÁ, Petr LEPCIO and Lenka ZAJÍČKOVÁ. Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots. Journal of Physical Chemistry Letters. Washington: American Chemical Society, 2022, vol. 13, No 49, p. 11536-11542. ISSN 1948-7185. Available from: https://dx.doi.org/10.1021/acs.jpclett.2c02964. |
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@article{2252388,
author = {Michal, Lukáš and Roy, Rajarshi and Holec, David and Gomez Perez, Inmaculada Jennifer and Pizúrová, Naděžda and Nečas, David and Dolečková, Anna and Medalová, Jiřina and Lepcio, Petr and Zajíčková, Lenka},
article_location = {Washington},
article_number = {49},
doi = {http://dx.doi.org/10.1021/acs.jpclett.2c02964},
keywords = {Charge transfer; Magnetic properties; Quantum mechanics; Two dimensional materials; X-ray photoelectron spectroscopy},
language = {eng},
issn = {1948-7185},
journal = {Journal of Physical Chemistry Letters},
title = {Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots},
url = {https://doi.org/10.1021/acs.jpclett.2c02964},
volume = {13},
year = {2022}
}
TY - JOUR
ID - 2252388
AU - Michal, Lukáš - Roy, Rajarshi - Holec, David - Gomez Perez, Inmaculada Jennifer - Pizúrová, Naděžda - Nečas, David - Dolečková, Anna - Medalová, Jiřina - Lepcio, Petr - Zajíčková, Lenka
PY - 2022
TI - Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots
JF - Journal of Physical Chemistry Letters
VL - 13
IS - 49
SP - 11536-11542
EP - 11536-11542
PB - American Chemical Society
SN - 19487185
KW - Charge transfer
KW - Magnetic properties
KW - Quantum mechanics
KW - Two dimensional materials
KW - X-ray photoelectron spectroscopy
UR - https://doi.org/10.1021/acs.jpclett.2c02964
N2 - In this work, we demonstrate the prospect of chemically synthesizing transition metal (Ni) doped magnetic graphene quantum dots (GQDs) with the sole aim of shedding light on their magnetic properties. Our results show that adsorption of nickel hydroxide on predominantly paramagnetic GQDs reveals antiferromagnetic ordering in the M–T profile around 10 K with change of the spin exchange coupling deviating from J = 1/2 to J = 1, mainly arising from the d–p mixing hybridization between the p orbital of carbon from the GQD and the d orbital of Ni. Furthermore, our results are well complemented by ab initio simulations showing asymmetry of the up and down spins around the Fermi level for nickel hydroxide-doped GQDs with long-range spin polarization. Furthermore, the magnitude of the net magnetic moment generated for doped GQDs on the carbon atoms is found to be site-dependent (surface or edge).
ER -
MICHAL, Lukáš, Rajarshi ROY, David HOLEC, Inmaculada Jennifer GOMEZ PEREZ, Naděžda PIZÚROVÁ, David NEČAS, Anna DOLEČKOVÁ, Jiřina MEDALOVÁ, Petr LEPCIO and Lenka ZAJÍČKOVÁ. Long-Range Magnetic Order in Nickel Hydroxide-Functionalized Graphene Quantum Dots. \textit{Journal of Physical Chemistry Letters}. Washington: American Chemical Society, 2022, vol.~13, No~49, p.~11536-11542. ISSN~1948-7185. Available from: https://dx.doi.org/10.1021/acs.jpclett.2c02964.
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