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Monte Carlo simulation of magnetic properties of irregular Fe islands on Pb/Si(111) substrate based on the scanning tunneling microscopy image
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10.1063/1.3377814
/content/aip/journal/apl/96/13/10.1063/1.3377814
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/13/10.1063/1.3377814
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Figures

Image of FIG. 1.
FIG. 1.

(a) STM image of a section of Fe islands grown on Si(111) with Pb buffer layer. (b) The constructing model of the same area as the STM image of Fe clusters. The light gray regions are the Pb buffer layer, the gray regions that are 0.5 nm thick, and the dark gray regions that are 1 nm thick. The white circle represents the center of islands, and the arrows indicate the magnetic preferential axis of clusters resulting from the shape anisotropy. Island B moves along direction with a distance nm. (c) The volume distribution of the whole simulated system from a STM image with 867 clusters. (d) Comparison of the interaction tenor dependence on the distance for two interacting islands A and B between the FFT (solid blocks) and DIP (empty circles) approach. The vertical scalar is divided by a factor .

Image of FIG. 2.
FIG. 2.

(a) The measured (empty blocks) and calculated (DIP: empty circles, FFT: solid circles) hysteresis loops of the system at . (b) A partial snapshot of the remanent magnetization, the light gray areas represent the Fe islands. Local ordering configurations, the alignment of moments (dotted lines) and head-to-head flux (dashed lines) microstructure are illustrated. The external field is along direction.

Image of FIG. 3.
FIG. 3.

Remanent magnetization as a function temperature, the experimental data is shown by empty blocks. The black dots show the simulation results (empty circles: FFT approach, solid circles: add MAE, solid blocks: DIP approach, upper triangles: no interaction). The inset shows the simulated magnetic hysteresis loops at by FFT methods, (empty circles: add MAE, solid blocks: no MAE).

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/content/aip/journal/apl/96/13/10.1063/1.3377814
2010-03-30
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Monte Carlo simulation of magnetic properties of irregular Fe islands on Pb/Si(111) substrate based on the scanning tunneling microscopy image
http://aip.metastore.ingenta.com/content/aip/journal/apl/96/13/10.1063/1.3377814
10.1063/1.3377814
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