Voltage controlled modification of flux closure domains in planar magnetic structures for microwave applications
Creators
- 1. School of Physics and Astronomy, The University of Nottingham, Nottingham NG7 2RD (United Kingdom)
- 2. Diamond Light Source, Chilton, Didcot, Oxfordshire OX11 0DE (United Kingdom)
- 3. London Centre of Nanotechnology, University College London, London WC1H 0AH (United Kingdom)
- 4. Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)
Description
Voltage controlled modification of the magnetocrystalline anisotropy in a hybrid piezoelectric/ferromagnet device has been studied using Photoemission Electron Microscopy with X-ray magnetic circular dichroism as the contrast mechanism. The experimental results demonstrate that the large magnetostriction of the epitaxial Fe81Ga19 layer enables significant modification of the domain pattern in laterally confined disc structures. In addition, micromagnetic simulations demonstrate that the strain induced modification of the magnetic anisotropy allows for voltage tuneability of the natural resonance of both the confined spin wave modes and the vortex motion. These results demonstrate the possibility for using voltage induced strain in low-power voltage tuneable magnetic microwave oscillators
Additional details
Identifiers
- DOI
- 10.1063/1.4892942;
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 105
- Journal Issue
- 6
- Journal Page Range
- p. 062405-062405.4
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 46024201
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- ANTIFERROMAGNETISM; ELECTRON MICROSCOPY; EPITAXY; GALLIUM COMPOUNDS; IRON COMPOUNDS; MAGNETOSTRICTION; MICROWAVE RADIATION; OSCILLATORS; PHOTOEMISSION; PIEZOELECTRICITY; SPIN WAVES; X RADIATION
- Descriptors DEC
- CRYSTAL GROWTH METHODS; ELECTRICITY; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; EMISSION; EQUIPMENT; IONIZING RADIATIONS; MAGNETIC PROPERTIES; MAGNETISM; MICROSCOPY; PHYSICAL PROPERTIES; RADIATIONS; SECONDARY EMISSION; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- (c) 2014 Author(s)