Research papers
Yu.I. Gorobets, S.A. Reshetnyak. Reflection of bulk spin waves from uniaxial multilayer ferromagnetic media with non-ideal interfaces // Central European Journal of Physics. – 2008. – Vol. 6, № 1. – P.7-13 | Print |
Written by Paltsun   
Saturday, 10 May 2014 15:47

The reflection coefficient of bulk spin waves from a ferromagnetic multilayer with periodically modulated parameters of the exchange interaction, the uniaxial magnetic anisotropy and the saturation magnetization (a magnonic crystal) is calculated. The dependence of the reflection coefficient upon the spin wave frequency and the values of the bias magnetic field, the parameter of interfacial coupling and the internal structure of the unit cell are investigated.

Last Updated on Saturday, 10 May 2014 15:59
 
С.А. Решетняк. Влияние обменных свойств интерфейса на отражение поверхностных спиновых волн от одноосного мультислойного ферромагнетика // Физика низких температур. – 2007. – Т. 33, № 1. – С. 88-92. | Print |
Written by Paltsun   
Saturday, 10 May 2014 15:33

Refraction index of bulk spin waves, which propagate in a ferromagnetic medium with inhomogeneous distribution of the parameters of exchange interaction and uniaxial anisotropy, is calculated in the formalism of spin density. The coefficients of spin wave reflection and transmission are computed on a boundary of two homogeneous magnetic media with different constants of exchange interaction, uniaxial rhombic anisotropy and saturation magnetization taking into account a d-like exchange on an interface. The dependencies of both intensity of a reflected wave and refraction index on a wave frequency and value of external permanent homogeneous magnetic field are obtained.

Last Updated on Saturday, 10 May 2014 15:35
 
С.А. Решетняк. Преломление поверхностных спиновых волн в пространственно неоднородных ферродиэлектриках с двуосной магнитной анизотропией // Физика твердого тела. – 2004. – Т. 46, № 6. – С. 1031-1037 | Print |
Written by Paltsun   
Saturday, 10 May 2014 15:30

The refractive index of surface spin waves propagating in a ferromagnetic medium with a nonuniform distribution of the parameters of uniaxial and orthorhombic magnetic anisotropies and exchange coupling is determined within the spin-density formalism. The coefficients of reflection and transmission of spin waves at the interface between two homogeneous magnets with different constants of uniaxial and orthorhombic magnetic anisotropies, exchange coupling, and saturation magnetization are calculated. The dependences of the intensity of a reflected wave and the refractive index on the wave frequency and the strength of an external dc homogeneous magnetic field are determined.

Last Updated on Saturday, 10 May 2014 15:35
 
A.L Sukstanskii, E.P. Stefanovskii, S.A. Reshetnyak and V.N.Varyukhin. Modulated magnetic structure and spin waves in hexagonal CsCuCI3 type antiferromagnets // Phys Rev B. – 2000. –V. 61, №13. – P. 8843-8850. | Print |
Written by Paltsun   
Saturday, 10 May 2014 15:25

A theory is developed for triangular helicoidal antiferromagnetic structures due to the relativistic-exchange inhomogeneous Dzyaloshinskii-Moriya interaction in hexagonal crystals. The magnetic structure observed in the CsCuCl3 system is explained, and the spin-wave spectrum and relaxation of spin waves are analyzed. The theoretical results are in agreement with experimental antiferromagnetic-resonance data.

Last Updated on Saturday, 10 May 2014 15:35
 
Gorobets Yu.I., Gorobets O.Yu., Kulish V.V., Distribution of the antiferromagnetic vector for a periodic system of remote circular antidots and a couple of circular antidots in an antiferromagnetic film // Scientific Notes of Taurida National V. I. Vernadsky University. Series: Physics and Mathematics Sciences. – 2013. – Vol. 26 (65), No 2. – P. 38-52. | Print |
Written by Paltsun   
Saturday, 10 May 2014 12:56

The paper is dedicated to the theoretical investigation of the antiferromagnetic vector distribution in a film composed of an isotropic or uniaxial antiferromagnet in the presence of circular antidots. A solution of the Landau-Lifshitz equation is obtained for the antiferromagnetic vector in such antidot system. The antiferromagnetic vector distribution is obtained for a periodic system of remote antidots in an isotropic antiferromagnet and for a couple of antidots (not remote, in general) in an isotropic antiferromagnet, “easy axis” antiferromagnet and “easy plane” antiferromagnet with various boundary conditions.

Last Updated on Saturday, 10 May 2014 14:03
 
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