Single-domain circular nanomagnets
Single-domain circular nanomagnets
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DOI：
10.1103/physrevlett.83.1042
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发表时间：
1999-08-02
影响因子：
8.6
通讯作者：
Tricker, DM
中科院分区：
文献类型：
--
作者：
Cowburn, RP;Koltsov, DK;Tricker, DM
采用高分辨电子束光刻技术制备了超耐热合金（Ni 80 Fe 14 Mo 5）的深亚微米圆形纳米磁体，研究了直径（500-55 nm）和厚度（6-15 nm）对磁体磁性的影响。高灵敏度的磁光方法已被用来测量这些纳米磁体的磁滞回线。一个实验的直径和厚度的相图，从而产生了识别涡相和单畴相。这两个相符合微磁学理论。
The magnetic properties of deep submicron circular nanomagnets fabricated by high-resolution electron beam lithography from Supermalloy (Ni80Fe14Mo5) have been studied as a function of both diameter (500-55 nm) and thickness (6-15 nm). A high sensitivity magneto-optical method has been used to measure the hysteresis loops of these nanomagnets. An experimental phase diagram in diameter and thickness has thus been produced which identifies a vortex phase and a single-domain phase. The two phases agree well with micromagnetic theory.