Switching mechanism of single domain particles in a two-dimensional array

Pardavi-Horvath, Martha and Vértesy, Gábor and Keszei, Béla and Vértesy, Zofia and McMichael, R. D. (1999) Switching mechanism of single domain particles in a two-dimensional array. IEEE TRANSACTIONS ON MAGNETICS, 35 (5). pp. 3871-3875. ISSN 0018-9464

Text 1207241.pdf Restricted to Repository staff only Download (240kB) | Request a copy

Abstract

The mechanism of switching of uniaxial, single domain, single crystalline epitaxial garnet particles on a 2D square array was investigated. The anisotropy field of the sample is 2 kOe, while the gaussian switching field distribution is 280 +/- 85 Oe. The dominant contribution to the incoherent switching is from inhomogeneous internal fields and canted moments at the corners and edges, where the switching starts. The interaction field with the surrounding particles, reduced nucleation barriers at crystalline defects, thermal activation, and dynamical effects in FMR also contribute to the observed switching field and as standard deviation.

Actions (login required)

Edit Item