D Altbir et al 2007 Nanotechnology 18 485707 doi:10.1088/0957-4484/18/48/485707
D Altbir1, J Escrig1, P Landeros2, F S Amaral3 and M Bahiana3
Show affiliationsThe effect of dipolar interactions among cylindrical nanodots, with a vortex–core magnetic configuration, is analyzed by means of analytical calculations. The cylinders are placed in a N × N square array in two configurations—cores oriented parallel to each other and with antiparallel alignment between nearest neighbors. Results comprise the variation in the core radius with the number of interacting dots, the distance between them and dot height. The dipolar interdot coupling leads to a decrease (increase) of the core radius for parallel (antiparallel) arrays.
61.46.-w Structure of nanoscale materials
75.75.+a Magnetic properties of nanostructures
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
Issue 48 (5 December 2007)
Received 25 June 2007
Published 30 October 2007
D Altbir et al 2007 Nanotechnology 18 485707
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