| Autor: |
Tartakovskaya, E. V., Tucker, J. W., Ivanov, B. A. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 6/15/2001, Vol. 89 Issue 12, p8348, 3p, 1 Diagram, 1 Graph |
| Abstrakt: |
A self-consistent theory of the ground-state nonuniform magnetization distribution in small magnetic nanoelements is proposed, valid for thicknesses much less than the exchange length, and with natural fulfillment of boundary conditions allowing application to a variety of element shapes. The theory is applied to rectangular 2p[sub 1]lx2p[sub 2]lx2l permalloy elements. In contrast to that of square elements, there exists a range of particle sizes having an "intermediate" ground state (mixed flower and leaf symmetries) with average magnetization inclined at φ to the longer edge. With increasing p[sub 1]/p[sub 2] (p[sub 2] fixed), φ gradually decreases to zero (flower state). This intermediate→flower transition is of the second type, unlike the leaf→flower transition (first type) observed in square elements with reduction in p[sub 1](=p[sub 2]). Simulation results support the analytic theory. © 2001 American Institute of Physics. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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