?
ВЛИЯНИЕ ФЕРРОНОВ СО СПИНОМ S=3/2 НА ТЕРМОДИНАМИЧЕСКИЕ ХАРАКТЕРИСТИКИ ОДНОМЕРНЫХ ЦЕПОЧЕК СО СПИНОМ S=1
С. 51–52.
Astrakhantsev R., Бень Т. В.
Language:
Russian
In book
М.: МИЭМ НИУ ВШЭ, 2019.
Bogoslovskiy N. A., Петров П. В., Аверкиев Н. С., Письма в Журнал экспериментальной и теоретической физики 2021 Т. 114 № 5-6(9) С. 383–390
A model of an impurity system in semiconductors consisting of spins randomly distributed in space with a hydrogen-like distance dependence of the exchange energy in the Ising Hamiltonian has been studied. The distribution function of the exchange energy and the mean square of the magnetic moment have been calculated as functions of the concentration. It ...
Added: November 8, 2022
Khokhlov D. A., Rakhmanov A. L., Rozhkov A. V. et al., Physical Review B: Condensed Matter and Materials Physics 2020 Vol. 101 No. 23 P. 235141
A few years ago we predicted theoretically that in systems with nesting of the Fermi surface the spin-valley half-metal has lower energy than the spin density wave state. In this paper we suggest a possible way to distinguish these phases experimentally. We calculate the dynamical spin susceptibility tensor for both states in the framework of ...
Added: October 27, 2020
Klimin S. A., Popova E., Popova M. N., Journal of Physics: Conference Series 2019 Vol. 1389 No. 1 P. 012039
We present low-temperature far-infrared study of Sm2BaNiO5. The lowest-frequency phonon of Sm2BaNiO5 generated by the motion of the Sm3+ ion demonstrates anomalous behaviour at temperatures lower than the Néel temperature, T<TN=55 K. This phonon hardens at the magnetic ordering although its frequency shift does not follow the magnetic order parameter. The observed phenomenon is responsible for ...
Added: December 19, 2019
Гаварина С. И., Попов Ю. Л., В кн.: МЕЖВУЗОВСКАЯ НАУЧНО-ТЕХНИЧЕСКАЯ КОНФЕРЕНЦИЯ СТУДЕНТОВ, АСПИРАНТОВ И МОЛОДЫХ СПЕЦИАЛИСТОВ ИМ. Е.В. АРМЕНСКОГО. Москва, 2019.: МИЭМ НИУ ВШЭ, 2019. С. 7–8.
В работе были исследовано влияние спина на систему двух взаимодействующих ферронов со спинами S=3/2, S=5/2, S=7/2 на температурную зависимость теплоемкости и магнитной восприимчивости в холдейновской магнитной системе с спином S=1. ...
Added: December 7, 2019
Klimin S. A., E. A. Popova, Popova M. N., , in: Journal of Physics: Conference SeriesVol. 1389: VII Euro-Asian Symposium "Trends in Magnetism" 8–13 September 2019, Ekaterinburg, Russian Federation.: Bristol: IOP Publishing, 2019. Ch. 012039 P. 1–5.
We present low-temperature far-infrared study of Sm2BaNiO5. The lowest-frequency phonon of Sm2BaNiO5 generated by the motion of the Sm3+ ion demonstrates anomalous behaviour at temperatures lower than the Néel temperature, T<TN=55 K. This phonon hardens at the magnetic ordering although its frequency shift does not follow the magnetic order parameter. The observed phenomenon is responsible for ...
Added: October 30, 2019
Malkin B., Elena A. Popova, Chukalina E. et al., Physica Status Solidi - Rapid Research Letters 2020 Vol. 14 No. 3 P. 190063-1–190063-5
Magnetic properties of antiferromagnetic quasi‐one‐dimensional YFe3(BO3)4 crystals are studied based on the analysis of the measured optical spectra of the Fe3+ ions in different rare‐earth iron borates and self‐consistent four‐particle cluster approach to helical iron chains. Parameters of crystal fields affecting the Fe3+ ions are calculated in the framework of exchange charge model. Parameters of ...
Added: October 30, 2019
Валиуллин В. Э., Михеенков А. В., Kugel K. et al., Письма в Журнал экспериментальной и теоретической физики 2019 Т. 109 № 8 С. 557–563
The specific heat and susceptibilities for the two- and one-dimensional spin–orbital models are calculated in
the framework of a spherically symmetric self-consistent approach at different temperatures and relations
between the parameters of the system. It is shown that, even in the absence of the long-range spin and orbital
order, the system exhibits features in the behavior of thermodynamic ...
Added: October 24, 2019
Редин В. В., Никифоров К. Г., Bondarenko G., Перспективные материалы 2008 № 4 С. 29–33
Исследованы процессы образования нанокластеров, связанные с введением атомов магнитного компонента — хрома и марганца — в гранецентрированную кубическую решетку шпинели CdIn2S4 и тетрагональную решетку халькопирита CuInSe2, соответственно. Рассчитана вероятность существования кластеров различного типа в зависимости от концентрации магнитного компонента. Получены концентрационные зависимости числа кластеров и температурные зависимости обусловленной ими магнитной восприимчивости спиновых стекол CdIn2S4: Cr ...
Added: January 4, 2013