Size-Specific Spin Configurations in Single Iron Nanomagnet: From Flower to Exotic Vortices

被引：64

作者：

Gatel, Christophe ^{[1
]}

Bonilla, Francisco Javier ^{[2
,3
]}

Meffre, Anca ^{[2
,3
]}

Snoeck, Etienne ^{[1
]}

Warot-Fonrose, Benedicte ^{[1
]}

Chaudret, Bruno ^{[2
,3
]}

Lacroix, Lise-Marie ^{[2
,3
]}

Blon, Thomas ^{[2
,3
]}

机构：

[1] CNRS, CEMES, F-31055 Toulouse, France

[2] Univ Toulouse, Lab Phys & Chim Nanoobjets, INSA UPS CNRS UMR5215, LPCNO, F-31077 Toulouse, France

[3] Inst Natl Sci Appl, F-31077 Toulouse, France

来源：

NANO LETTERS | 2015年 / 15卷 / 10期

关键词：

magnetic configuration; electron holography; vortex state; single domain state; flower state; nanocube; MAGNETIC DOMAIN-WALL; PARTICLES; GROWTH;

D O I：

10.1021/acs.nanolett.5b02892

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The different spin configurations in the vicinity of the single-domain/vortex transition are reported in isolated magnetic nanoparticles. By combining chemical synthesis, electron holography in a dedicated transmission electron microscope and micromagnetic simulations, we establish the "magnetic configurations vs size" phase diagram of Fe single-crystalline nanocubes. Room temperature high resolution magnetic maps reveal the transition between single-domain and vortex states for Fe nanocubes from 25 to 27 nm, respectively. An intermediate spin configuration consisting of an < 111 > vortex is for the first time evidenced.

引用

页码：6952 / 6957

页数：6

共 31 条

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