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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