Frequency tuning the ultrafast magnetization dynamics of FexPt100-x alloys
Frequency tuning the ultrafast magnetization dynamics of FexPt100-x alloys
复制标题
DOI：
10.1063/1.3691954
复制
发表时间：
2012-03
影响因子：
3.2
通讯作者：
R. Brandt;F. Ganss;T. Senn;M. Daniel;M. Albrecht;H. Schmidt
中科院分区：
文献类型：
--
作者：
R. Brandt;F. Ganss;T. Senn;M. Daniel;M. Albrecht;H. Schmidt
We report frequency tuning of magnetic oscillations in both planar films and individual patterned nano-sized dots by varying the iron content of disordered FexPt100-x alloys from 42 at. % to 100 at. %. It is seen that as the Fe content is increased, the magnetic oscillation frequency rises by up to 50% in both the films and individual dots due to the change in the saturation magnetization. Micromagnetic simulations and analytic calculations are in agreement with the data. These tunable alloys could be used in microwave-assisted magnetic recording and especially for developing a 3D storage technology where layers of different resonance frequency are switched individually.
