The resonance susceptibility of two-layer exchange-coupled ferromagnetic film with a combined uniaxial and cubic anisotropy in the layers

2016 ◽  
Vol 419 ◽  
pp. 512-516
Author(s):  
N.V. Shul’ga ◽  
R.A. Doroshenko
Keyword(s):  
Ferromagnetic Film ◽  
Cubic Anisotropy

MAGNETIZATION AND INHOMOGENEOUS MAGNETOELECTRIC EFFECT IN A NANO-SIZED TWO-LAYER FERROMAGNETIC FILM WITH A COMBINED UNIAXIAL AND CUBIC ANISOTROPY IN LAYERS

2021 ◽  
Vol 0 (1) ◽  
pp. 23-26
Author(s):  
N.V. SHULGA ◽  
◽  
R.A. DOROSHENKO ◽  
Keyword(s):  
Ground State ◽  
Easy Axis ◽  
Magnetoelectric Effect ◽  
Numerical Study ◽  
Uniaxial Anisotropy ◽  
Polarization Vector ◽  
Ferromagnetic Film ◽  
Electric Polarization ◽  
Ferromagnetic Plate ◽  
Cubic Anisotropy

A numerical study of the magnetization reversal of a two-layer exchange-coupled ferromagnetic plate of finite dimensions, which has a combined uniaxial anisotropy (of the "easy axis" type for the upper layer and «easy plane» for the lower one) and cubic anisotropy with orientation [111]. It is shown that, in the presence of cubic anisotropy, the ground state of magnetization turns out to be uniform in the plane of the film. However, there is discontinuity at the interface between the film layers. This inhomogeneity can lead to the appearance of electric polarization due to the magnetoelectric effect. The electric polarization vector in this case lies in the plane of the film. Its modulus increases with increasing cubic anisotropy. In addition, with an increase in cubic anisotropy, a hysteresis of electrical polarization is observed.

Dipole-exchange modes of a thin ferromagnetic film

1969 ◽  
Vol 30 (1) ◽  
pp. 2-3 ◽  
Author(s):  
T. Wolfram ◽  
R.E. de Wames
Keyword(s):  
Ferromagnetic Film ◽  
Thin Ferromagnetic Film ◽  
Dipole Exchange

Second Order Precession in the Plate with Cubic Anisotropy and Magnetoelastic Properties

2015 ◽  
Vol 233-234 ◽  
pp. 73-78 ◽  
Author(s):  
M.S. Kirushev ◽  
Vladimir S. Vlasov ◽  
D.A. Pleshev ◽  
F.F. Asadullin ◽  
Leonid N. Kotov ◽  
...  
Keyword(s):  
Magnetization Vector ◽  
Second Order ◽  
Ferrite Plate ◽  
Magnetoelastic Properties ◽  
Cubic Anisotropy

The paper considers the second order precession of the magnetization vector in a perpendicular magnetized anisotropic ferrite plate with magnetoelastic properties. The boundaries of the precession regimes on the frequency and amplitude of the alternating field were defined. The features of the precession of the magnetization vector regimes associated with magnetoelastic properties were revealed.

scholarly journals Controllable field-free switching of perpendicular magnetization through bulk spin-orbit torque in symmetry-broken ferromagnetic films

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xuejie Xie ◽  
Xiaonan Zhao ◽  
Yanan Dong ◽  
Xianlin Qu ◽  
Kun Zheng ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Domain Walls ◽  
Single Layer ◽  
Ferromagnetic Film ◽  
Effective Field ◽  
Composition Gradient ◽  
Spin Orbit ◽  
Interlayer Exchange Coupling ◽  
Magnetization Switching ◽  
Perpendicular Magnetization

AbstractProgrammable magnetic field-free manipulation of perpendicular magnetization switching is essential for the development of ultralow-power spintronic devices. However, the magnetization in a centrosymmetric single-layer ferromagnetic film cannot be switched directly by passing an electrical current in itself. Here, we demonstrate a repeatable bulk spin-orbit torque (SOT) switching of the perpendicularly magnetized CoPt alloy single-layer films by introducing a composition gradient in the thickness direction to break the inversion symmetry. Experimental results reveal that the bulk SOT-induced effective field on the domain walls leads to the domain walls motion and magnetization switching. Moreover, magnetic field-free perpendicular magnetization switching caused by SOT and its switching polarity (clockwise or counterclockwise) can be reversibly controlled in the IrMn/Co/Ru/CoPt heterojunctions based on the exchange bias and interlayer exchange coupling. This unique composition gradient approach accompanied with electrically controllable SOT magnetization switching provides a promising strategy to access energy-efficient control of memory and logic devices.

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