Structural and Magnetic Properties of MBE Grown (Fe/Pt) (111) Multilayers

• Authors: A. Marynowska , E. Dynowska , S. Lewińska , T. Seki , K. Takanashi , J. Kanak , A. Pietruczik , P. Aleszkiewicz , A. Wawro , A. Ślawska-Waniewska , L. Baczewski
• Languages of publication: EN

Abstracts

EN

Series of Al₂O₃(0001)/Pt/(Fe/Pt)ₙ/Pt multilayers with variable number of bilayers n and thicknesses of individual layers were grown using molecular beam epitaxy to investigate influence of buffer layer structure, number of bilayers, and individual layer thickness on their structural and magnetic properties. Both columnar and monocrystalline 10 nm Pt (111) buffer layers were used in the experiment. Structure of Pt buffer layer determined the roughness of Fe/Pt interfaces and consequently magnetic properties of the multilayers. When multilayers were deposited on columnar Pt buffer layer, we observed increase of Fe/Pt interfaces roughness with increasing number of bilayers to values exceeding the nominal Fe/Pt bilayer thickness in the upper part of the sample volume, which resulted in the increment of coercivity in the sample with n=15 determined from hysteresis loops measured for perpendicular orientation of magnetic field. When Fe/Pt multilayers were deposited on monocrystalline Pt buffer layer, Fe/Pt interfaces were smooth regardless the number of bilayers. All samples, despite of the quality of buffer layer, number of bilayers, and individual layer thickness revealed easy magnetisation axis oriented in the sample plane.

Keywords

EN

61.05.cp; 61.05.jh; 68.35.bd; 68.35.Ct; 68.37.Ef; 68.37.Ps; 68.65.Ac; 75.50.Bb; 75.70.Ak

Discipline

• 61.05.jh: Low-energy electron diffraction (LEED) and reflection high-energy electron diffraction (RHEED)
• 75.70.Ak: Magnetic properties of monolayers and thin films
• 68.35.Ct: Interface structure and roughness
• 68.35.bd: Metals and alloys
• 61.05.cp: X-ray diffraction
• 68.37.Ef: Scanning tunneling microscopy (including chemistry induced with STM)
• 68.37.Ps: Atomic force microscopy (AFM)
• 75.50.Bb: Fe and its alloys
• 68.65.Ac: Multilayers

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 130
• Issue: 6
• Pages: 1363-1370

Dates

published

2016-12

received

2016-09-08

(unknown)

2016-10-18

Contributors

author

A. Marynowska

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

author

E. Dynowska

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

author

S. Lewińska

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

author

T. Seki

• Institute for Materials Research, Sendai, Japan

author

K. Takanashi

• Institute for Materials Research, Sendai, Japan

author

J. Kanak

• AGH University of Science and Technology, Cracow, Poland

author

A. Pietruczik

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

author

P. Aleszkiewicz

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

author

A. Wawro

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

author

A. Ślawska-Waniewska

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

author

L. Baczewski

• Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland

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Identifiers

DOI

10.12693/APhysPolA.130.1363