Control over the Magnetic Properties of Co/Pt-based Multilayered Periodical Structures

The possibility of controlling the magnetic properties of multilayered periodical structures with perpendicular magnetic anisotropy, which are based on cobalt and platinum films, have been studied. The multilayered films composed by layers with a thickness of 0.5–1.0 nm were subjected to two types o...

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Bibliographic Details
Published in:Technical physics 2019-11, Vol.64 (11), p.1584-1589
Main Authors: Tatarskiy, D. A., Gusev, N. S., Mikhailovskii, V. Yu, Petrov, Yu. V., Gusev, S. A.
Format: Article
Language:English
Subjects:
Analysis
ANISOTROPY
ANNEALING
Classical and Continuum Physics
COBALT
COERCIVE FORCE
Coercivity
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CONTROL
Electron beams
HELIUM IONS
ION BEAMS
Irradiation
KEV RANGE
LAYERS
Magnetic anisotropy
MAGNETIC PROPERTIES
MIXING
Periodicals
PERIODICITY
Physics
Physics and Astronomy
PLATINUM
Thickness
THIN FILMS
TRANSMISSION ELECTRON MICROSCOPY
Vacuum annealing
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Summary:The possibility of controlling the magnetic properties of multilayered periodical structures with perpendicular magnetic anisotropy, which are based on cobalt and platinum films, have been studied. The multilayered films composed by layers with a thickness of 0.5–1.0 nm were subjected to two types of actions: vacuum annealing at different temperatures and irradiation by helium ion beams. Transmission electron microscopy has shown that the irradiation by He + ions with energy of 30 keV leads to material mixing in the layers since at vacuum annealing the layered structure of films is kept. In this case, as a result of thermal annealing, the coercive force of the structure increases significantly, and upon irradiation with helium ions, the coercivity of the films decreases to a change in the type of anisotropy from perpendicular to “easy plane” anisotropy.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784219110276