Kerr rotation enhancement in metallic bilayer thin films for magneto-optical recording

Journal Article · Mon Dec 12 04:00:00 EST 1988 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.100526· OSTI ID:6712242

Reim, W; Weller, D

The enhancement of the magneto-optical Kerr effect via metallic bilayer structures is demonstrated for magneto-optic square loop materials on top of optically thick silver and copper reflectors, respectively. We show that in general an enhancement of the polar Kerr rotation angle theta/sub K/ occurs at photon energies where the optical constants n and k of the reflector have low values. The enhancement factor depends on the thickness of the magnetic layer and on the relative magnitude of the optical constants of both layers. The reflectivity of these bilayer structures is only slightly reduced compared to the bulk magneto-optical medium.

• Research Organization: Siemens AG, Research and Development Labs, ZFE TPH 11, 8520 Erlangen, Federal Republic of Germany
• OSTI ID: 6712242
• Journal Information: Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 53:24; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
COBALT ALLOYS
DATA
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
FILMS
GADOLINIUM ALLOYS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
KERR EFFECT
LAYERS
MAGNETO-OPTICAL EFFECTS
NUMERICAL DATA
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RARE EARTH ALLOYS
REFLECTIVITY
SURFACE PROPERTIES
TERBIUM ALLOYS
THIN FILMS