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wizyta

od 2020-09-20

Mgr Hanna Głaczyńska  | 2002-10 <> 2005-07

Doktorant


Zainteresowania naukowe:
Badania właściwości magnetycznych, periodycznie uporządkowanych klasterów Ni, Co i Fe, wytworzonych za pomocą litografii nanosferycznej.

Publikacje                          Seminaria


2.

Imperia P., Kandulski W., Kosiorek A., Głaczyńska H., Maletta H., Giersig M.

Magnetic anisotropy study of triangular-shaped Co nanostructures Atomic force microscopy (AFM), X-ray magnetic circular dichroism (XMCD), magnetic force microscopy (MFM) and vibrating sample magnetometry (VSM) have been used to measure the magnetic and geometrical characteristics of triangular-shaped Co structures of lateral size 730 nm and thickness 32 nm, prepared by nanosphere lithography (NSL). Evidence of in-plane six-fold magnetic anisotropy induced by the symmetry of the structure has been found. By means of XMCD measurements, performed at remanence after applying a pulsed field, a structure rotation angle-dependent oscillation of about 15% with a periodicity of 601 has been observed for both the orbital and spin moments. Furthermore, the system exhibits the angular hysteresis effect. The magnetic measurements performed by MFM show a reduction of the magnetic configurations to only two states, one quasi-single domain Y state and second, a combination of vortex and Y state.
(C) 2008 Elsevier B. V. All rights reserved.

Journal of Magnetism and Magnetic Materials, 320(21), 2682-2687 (2008)

DOI: 10.1016/j.jmmm.2008.05.044   (Pobrane:  2020-10-21)


1.

Kosiorek A., Kandulski W., Głaczyńska H., Giersig M.

Fabrication of nanoscale rings, dots, and rods by combining shadow nanosphere lithography and annealed polystyrene nanosphere masks The application of shadow nanosphere lithography for the preparation of large-area, two-dimensional, metallic nanostructures of different shape is described. Through changing the mask morphology by temperature processing and varying the evaporation conditions, particles with morphologies such as rings, rods, and dots have been produced. This process allot-vs outstanding control of the size and morphology of the particles. The efficient technique is shown to scale down the size of metallic nano-particles from 200 to 30 nm, while preserving the original nanosphere spacing and order. The 150-nm-diameter Fe rings produced by this method show ferromagnetic behavior, which was predicted by theoretical simulation. All the experimental results were confirmed by computer simulations, which also showed the possibility of creating periodic arrays of any other geometrical shape.

Small, 1(4), 439-444 (2005)

DOI: 10.1002/smll.200400099


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