Single-domain circular nanomagnets

被引：1054
|
作者：
Cowburn, RP
Koltsov, DK
Adeyeye, AO
Welland, ME
Tricker, DM
机构：
[1] Univ Cambridge, Dept Engn, Nanoscale Sci Grp, Cambridge CB2 1PZ, England
[2] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 05期
关键词：
D O I：
10.1103/PhysRevLett.83.1042
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
引用
收藏
页码：1042 / 1045
页数：4
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