Detail publikace

High-resolution fully vectorial scanning Kerr magnetometer

FLAJŠMAN, L. URBÁNEK, M. KŘIŽÁKOVÁ, V. VAŇATKA, M. TURČAN, I. ŠIKOLA, T.

Originální název

High-resolution fully vectorial scanning Kerr magnetometer

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

We report on the development of a high-resolution scanning magnetometer, which fully exploits the vectorial nature of the magneto-optical Kerr effect. The three-dimensional nature of magne- tization is at the basis of many micromagnetic phenomena and from these data, we can fully characterize magnetization processes of nanostructures in static and dynamic regimes. Our scanning Kerr magnetometer uses a high numerical aperture microscope objective where the incident light beam can be deterministically deviated from the objective symmetry axis, therefore, both in-plane (via the longitudinal Kerr effect) and out-of-plane (via the polar Kerr effect) components of the magnetization vector may be detected. These components are then separated by exploiting the symmetries of the polar and longitudinal Kerr effects. From four consecutive measurements, we are able to directly obtain the three orthogonal components of the magnetization vector with a resolution of 600 nm. Performance of the apparatus is demonstrated by a measurement of 3D magnetization vector maps showing out-of-plane domains and in-plane domain walls in an yttrium-iron-garnet film and on a study of magnetization reversal in a 4-µm-wide magnetic disk.

Klíčová slova

Kerr effect, vector Kerr magnetometry, magnetic nanostructures, magnetic vortices

Autoři

FLAJŠMAN, L.; URBÁNEK, M.; KŘIŽÁKOVÁ, V.; VAŇATKA, M.; TURČAN, I.; ŠIKOLA, T.

Vydáno

10. 5. 2016

Nakladatel

AIP Publishing

ISSN

0034-6748

Periodikum

Review of Scientific Instruments

Ročník

87

Číslo

5

Stát

Spojené státy americké

Strany od

053704-1

Strany do

053704-7

Strany počet

7

URL