Electrical control of magnetic reversal processes in magnetostrictive structures

TY - JOUR

T1 - Electrical control of magnetic reversal processes in magnetostrictive structures

AU - Cavill, S.A.

AU - Parkes, D.E.

AU - Miguel, J.

AU - Dhesi, S.S.

AU - Edmonds, K.W.

AU - Campion, R.P.

AU - Rushforth, A.W.

PY - 2013

Y1 - 2013

N2 - We demonstrate the interplay between strain-induced, shape-induced, and magnetocrystalline anisotropy energies in a micron scale magnetostrictive device coupled to a piezoelectric transducer. Varying the voltage on the transducer tunes the shape of the magnetic hysteresis loops and the magnetic reversal processes, which involve a single 180° or 90° domain wall, or proceed via the formation of a regular flux closure domain pattern. The flux closure domains can be suppressed or enhanced in the absence of an external magnetic field by sweeping the applied voltage. The functionalities we demonstrate may find applications in magnetic schemes for information storage and logical processing.

AB - We demonstrate the interplay between strain-induced, shape-induced, and magnetocrystalline anisotropy energies in a micron scale magnetostrictive device coupled to a piezoelectric transducer. Varying the voltage on the transducer tunes the shape of the magnetic hysteresis loops and the magnetic reversal processes, which involve a single 180° or 90° domain wall, or proceed via the formation of a regular flux closure domain pattern. The flux closure domains can be suppressed or enhanced in the absence of an external magnetic field by sweeping the applied voltage. The functionalities we demonstrate may find applications in magnetic schemes for information storage and logical processing.

UR - http://www.scopus.com/inward/record.url?scp=84872941397&partnerID=8YFLogxK

U2 - 10.1063/1.4789396

DO - 10.1063/1.4789396

M3 - Article

AN - SCOPUS:84872941397

SN - 0003-6951

VL - 102

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 3

M1 - 032405

ER -