Asymmetric Hysteresis of Neel Caps in Flux-Closure Magnetic Dots

作者：Fruchart Olivier^*; Rougemaille Nicolas; Bendounan Azzedine; Toussaint Jean Christophe; Belkhou Rachid; Tian Yuan; Yu Hyeonseung; Cheynis Fabien; Masseboeuf Aurelien; Bayle Guillemaud Pascale; Marty Alain

来源：IEEE Transactions on Magnetics, 2010, 46(6): 1552-1555.

DOI：10.1109/TMAG.2010.2043222

• Magnetic domain
• magnetic domain wall
• magnetization reversal
• micromagnetic simulation
• nanomagnetism

We investigated with XMCD-PEEM magnetic imaging the magnetization reversal processes of Neel caps inside Bloch walls in self-assembled, micron-sized Fe(110) dots with flux-closure magnetic state. In most cases these magnetic processes are symmetric in field, as expected. However, some dots show pronounced asymmetric behaviors. Micromagnetic simulations suggest that the geometrical features (and their asymmetry) of the dots strongly affect the switching mechanism of the Neel caps.

• 出版日期2010-6
• 单位中国地震局