Magnetization Reversal in Cobalt Nanocolumn Structures Obtained by Glancing Angle Deposition

• Authors: K. Buchta , Ch. Schmidt , G. Trykowski , S. Biniak , M. Kempiński , T. Luciński
• Languages of publication: EN

Abstracts

EN

An advanced deposition technique known as glancing angle deposition was used to fabricate randomly seeded magnetic cobalt columnar nanostructures. The existence of nanocolumns was confirmed by the cross-section scanning electron microscopy. The evolution in the magnetization reversal mechanism as a function of the film thickness was investigated. The coercivity H_{C} and M_{R}/M_{S} ratio (where M_{R} and M_{S} denote the remanent and saturation magnetization, respectively), derived from the magnetic hysteresis loops, are discussed as a function of the angle between the external magnetic field and the surface normal. The direction of the magnetization easy/hard axis and the columns inclination angle were determined on the basis of the angular dependences of the H_{C} and the M_{R}/M_{S}. A crossover from the coherent rotation, based on the Stoner-Wohlfarth model, to the curling reversal mode was observed.

Keywords

EN

75.70.Ak; 73.50.-h; 73.61.-r

Discipline

• 73.61.-r: Electrical properties of specific thin films(for optical properties of thin films, see 78.20.-e and 78.66.-w; for magnetic properties of thin films, see 75.70.-i)
• 75.70.Ak: Magnetic properties of monolayers and thin films
• 73.50.-h: Electronic transport phenomena in thin films(for electronic transport in mesoscopic systems, see 73.23.-b; see also 73.40.-c Electronic transport in interface structures; for electronic transport in nanoscale materials and structures, see 73.63.-b)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1222-1224

Dates

published

2012-05

Contributors

author

K. Buchta

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

Ch. Schmidt

• University Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany

author

G. Trykowski

• Nicolaus Copernicus University, J. Gagarina 11, 87-100 Toruń, Poland

author

S. Biniak

• Nicolaus Copernicus University, J. Gagarina 11, 87-100 Toruń, Poland

author

M. Kempiński

• Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

T. Luciński

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.121.1222