Self-assembly of magnetic Ni nanoparticles into 1D arrays with antiferromagnetic order

被引：29

作者：

Bliznyuk, V. ^{[1
]}

Singamaneni, S. ^{[1
]}

Sahoo, S. ^{[2
,3
]}

Polisetty, S. ^{[2
,3
]}

He, Xi ^{[2
,3
]}

Binek, Ch ^{[2
,3
]}

机构：

[1] Western Michigan Univ, Coll Engn & Appl Sci, Kalamazoo, MI 49008 USA

[2] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA

[3] Univ Nebraska, Nebraska Ctr Mat & Nanosci, Lincoln, NE 68588 USA

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 10期

关键词：

NICKEL NANOPARTICLES; PALLADIUM NANOWIRES; FORCE MICROSCOPY; PARTICLE SYSTEM; NANOCRYSTALS; FABRICATION; COBALT; PHASE; MAGNETOELECTRONICS; NANOSTRUCTURES;

D O I：

10.1088/0957-4484/20/10/105606

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, we report on the magnetic properties of isolated nanoparticles and interacting nanochains formed by the self-assembly of Ni nanoparticles. The magnetic properties were studied using superconducting quantum interference device (SQUID) magnetometry and magnetic force microscopy (MFM). We demonstrate that single-domain Ni nanoparticles spontaneously form one-dimensional (1D) chains under the influence of an external magnetic field. Furthermore, such magnetic field-driven self-assembly in conjunction with surface templating produces regular arrays of 1D nanochains with antiferromagnetic intra-chain order. The antiferromagnetic order, which is in striking contrast to what is found for non-interacting nanoparticle assemblies within the chains, can be evidenced from MFM and SQUID measurements.

引用

页数：8

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