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Martynov, S. N.
Continual approach at T=0 in the mean field theory of incommensurate magnetic states in the frustrated Heisenberg ferromagnet with an easy axis anisotropy / S. N. Martynov, V. I. Tugarinov, A. S. Martynov // J. Magn. Magn. Mater. - 2017. - Vol. 440: EURO-Asian Symposium on Trends in Magnetism (EASTMAG) (AUG 15-19, 2016, Siberian Fed Univ, Krasnoyarsk, RUSSIA). - P. 47-49, DOI 10.1016/j.jmmm.2016.12.086. - Cited References:9
. - ISSN 0304-8853. - ISSN 1873-4766РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
FERRIMAGNET
Кл.слова (ненормированные):
Incommensurate magnetic structures -- Soliton lattice -- Continual approach
Аннотация: The algorithm of approximate solution was developed for the differential equation describing the anharmonical change of the spin orientation angle in the model of ferromagnet with the exchange competition between nearest and next nearest magnetic neighbors and the easy axis exchange anisotropy. The equation was obtained from the collinearity constraint on the discrete lattice. In the low anharmonicity approximation the equation is resulted to an autonomous form and is integrated in quadratures. The obvious dependence of the angle velocity and second derivative of angle from angle and initial condition was derived by expanding the first integral of the equation in the Taylor series in vicinity of initial condition. The ground state of the soliton solutions was calculated by a numerical minimization of the energy integral. The evaluation of the used approximation was made for a triple point of the phase diagram.
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Доп.точки доступа:
Tugarinov, V. I.; Тугаринов, Василий Иванович; Martynov, A. S.; Мартынов, Александр Сергеевич; Мартынов, Сергей Николаевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН
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