Details

Autor(en) / Beteiligte

• Dwivedi, Sharad
• Priyobarta Singh, Yenshembam
• Consolo, Giancarlo

Titel

On the statics and dynamics of transverse domain walls in bilayer piezoelectric-magnetostrictive nanostructures

Ist Teil von

• Applied Mathematical Modelling, 2020-07, Vol.83, p.13-29

Ort / Verlag

New York: Elsevier Inc

Erscheinungsjahr

2020

Quelle

Electronic Journals Library

Beschreibungen/Notizen

• •In the sole presence of applied TMF, DW remains static and deviates away from the classical head-to-head TDW structure.•The DW width increases with the increase in the applied TMF and gets disappear as the TMF reaches the breakdown value.•Differently from a TMF, a longitudinal field (and/or an electric current) is able to move the DW along the nanostrip axis.•The steady DW velocity increases as we increase the strength of the external sources and reaches the breakdown value.•The breakdown value of the applied TMF increases with the increase in the in-plane strain difference. In this article, we investigate the static and dynamic properties of transverse Bloch domain wall in an isotropic, linearly elastic bilayer piezoelectric-magnetostrictive nanostructures under the influence of axial (driving), transverse magnetic fields and spin-polarized electric current. To be precise, we perform the analysis under the framework of the one-dimensional Extended Landau–Lifshitz–Gilbert equation in the presence of stresses generated by a piezoelectric actuator. First, we derive the magnetization profile in the two distant domains and then study the static magnetization profile in the sole presence of the applied transverse magnetic field. Next, we propose a new Walker’s type trial function and establish the analytical expressions of the dynamical quantities such as moving DW profile, velocity, displacement, and excitation angle by using a small angle approximation approach. Finally, we delineate the obtained analytical results with the aid of numerical illustrations.