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Electrical control of magnetic reversal processes in magnetostrictive structures

DOI: 10.1063/1.4789396 DOI Help

Authors: S. Cavill (University of York, Diamond Light Source) , D. Parkes (School of Physics and Astronomy, University of Nottingham) , J. Miguel (Diamond Light Source) , S. Dhesi (Diamond Light Source) , K. Edmonds (University of Nottingham) , R. P. Campion (School of Physics and Astronomy, University of Nottingham) , A. Rushforth (School of Physics and Astronomy, University of Nottingham)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Applied Physics Letters , VOL 102 (3) , PAGES 2213-2223

State: Published (Approved)
Published: January 2013

Abstract: 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.

Journal Keywords: Magnetic anisotropy; Magnetic hysteresis; Magnetic fields; Domain walls; Piezoelectric transducers

Diamond Keywords: Data Storage; Ferromagnetism; Ferroelectricity; Piezoelectricity

Subject Areas: Physics, Materials, Information and Communication Technology

Instruments: I06-Nanoscience

Added On: 20/02/2013 11:36

Discipline Tags:

Quantum Materials Multiferroics Physics Components & Micro-systems Information & Communication Technologies Magnetism Materials Science

Technical Tags:

Spectroscopy Circular Dichroism (CD) X-ray Magnetic Circular Dichroism (XMCD)