N. A. Belskaya, E. K. Khrapova, A. A. Ivanova, R. M. Eremina, R. G. Batulin, D. S. Chikurov, P. N. Degtyarenko, A. Yu. Tsvetkov, D. A. Kirilenko, A. A. Krasilin, “Magnetic properties of (Mg$_{1-x}$Co$_{x}$)$_3$Si$_2$O$_5$(OH)$_4$ nanoscrolls and nanocomposites based on them”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2024, Volume 120, Issue 4,Pages 252

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CONDENSED MATTER

Magnetic properties of (Mg$_{1-x}$Co$_{x}$)$_3$Si$_2$O$_5$(OH)$_4$ nanoscrolls and nanocomposites based on them

N. A. Belskaya^a, E. K. Khrapova^a, A. A. Ivanova^a, R. M. Eremina^b, R. G. Batulin^c, D. S. Chikurov^a, P. N. Degtyarenko^d, A. Yu. Tsvetkov^e, D. A. Kirilenko^a, A. A. Krasilin^a

^a Ioffe Institute, 194021, St. Petersburg, Russia
^b Zavoisky Physical–Technical Institute, FRC Kazan Scientific Center, Russian Academy of Sciences, 420029, Kazan, Russia
^c Kazan Federal University, 420008, Kazan, Russia
^d Joint Institute for High Temperatures, Russian Academy of Sciences, 125412, Moscow, Russia
^e Lebedev Physical Institute, Russian Academy of Sciences, 119991, Moscow, Russia

Abstract: Some layered phyllosilicates are characterized by spontaneous scrolling due to size mismatch between sublayers. The doping of layers by transition metal ions allows nanoscrolls to acquire magnetic properties. The magnetic behavior of synthetic (Mg$_{1-x}$Co$_x$)$_3$Si$_2$O$_5$(OH)$_4$ ($x=0.2, 0.4, 0.6, 0.8, 1$) phyllosilicates with the chrysotile structure before and after partial hydrogen-induced reduction is studied. The dominant ferromagnetic behavior has been revealed in all studied phyllosilicates. Ensembles of cobalt metal nanoparticles in a silicate matrix have demonstrated a collective magnetic response at room temperature with a narrow hysteresis loop and fast saturation.

Received: 07.06.2024
Revised: 12.07.2024
Accepted: 17.07.2024

DOI: 10.31857/S0370274X24080164