Published November 29, 2010 | Version v1
Journal article Metadata-only

Observation of coupled vortex gyrations by 70-ps-time- and 20-nm-space-resolved full-field magnetic transmission soft x-ray microscopy

Creators

  • 1. Research Center for Spin Dynamics and Spin-Wave Devices, and Nanospinics Laboratory, Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)
  • 2. Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  • 3. Institut fuer Angewandte Physik und Zentrum fuer Mikrostrukturforschung, Universitaet Hamburg, Hamburg 20355 (Germany)

Description

We employed time- and space-resolved full-field magnetic transmission soft x-ray microscopy to observe vortex-core gyrations in a pair of dipolar-coupled vortex-state Permalloy (Ni80Fe20) disks. The 70 ps temporal and 20 nm spatial resolution of the microscope enabled us to simultaneously measure vortex gyrations in both disks and to resolve the phases and amplitudes of both vortex-core positions. We observed their correlation for a specific vortex-state configuration. This work provides a robust and direct method of studying vortex gyrations in dipolar-coupled vortex oscillators.

Additional details

Identifiers

DOI
10.1063/1.3517496;

Publishing Information

Journal Title
Applied Physics Letters
Journal Volume
97
Journal Issue
22
Journal Page Range
p. 222502-222502.3
ISSN
0003-6951
CODEN
APPLAB

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42108840
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
AMPLITUDES; CONFIGURATION; CORRELATIONS; IRON ALLOYS; MAGNETIC CORES; MAGNETIC FIELDS; MAGNETIC MOMENTS; MICROSCOPES; MICROSCOPY; NICKEL ALLOYS; OSCILLATORS; PERMALLOY; SOFT X RADIATION; SPATIAL RESOLUTION; TRANSMISSION; VORTICES
Descriptors DEC
ALLOYS; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; EQUIPMENT; IONIZING RADIATIONS; IRON ALLOYS; MAGNETIC STORAGE DEVICES; MEMORY DEVICES; NICKEL ALLOYS; RADIATIONS; RESOLUTION; TRANSITION ELEMENT ALLOYS; X RADIATION

Optional Information

Notes
(c) 2010 American Institute of Physics