Ligand Passivated Core-Shell FePt@Co Nanomagnets Exhibiting Enhanced Energy Product

被引：22

作者：

Carnevale, David J. ^{[1
]}

Shatruk, Michael ^{[1
]}

Strouse, Geoffrey F. ^{[1
]}

机构：

[1] Florida State Univ, Dept Chem & Biochem, Tallahassee, FL 32306 USA

来源：

CHEMISTRY OF MATERIALS | 2016年 / 28卷 / 15期

基金：

美国国家科学基金会;

关键词：

MAGNETIC NANOPARTICLES; NANOCOMPOSITE MAGNETS; MICROWAVE-ABSORPTION; POLYOL PROCESS; FILMS; NANOCRYSTALS; SUPERLATTICES; COMPOSITE; BILAYER; REACTOR;

D O I：

10.1021/acs.chemmater.6b02062

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Systematic growth of a soft-magnet Co shell (0.6 to 2.7 nm thick) around a hard-magnet Fe0.65Pt0.35 core (5 nm in diameter) has been achieved in a one-pot microwave synthesis. This controlled growth led to a 4-fold enhancement in the energy product of the core shell assembly as compared to the energy product of bare Fe0.65Pt0.35 nanoparticles. The simultaneous enhancement of coercivity and saturation moment reflects the onset of theoretically predicted exchange-spring behavior. The demonstration of nanoscale exchange-spring magnets can lead to improved high-performance magnet design for energy applications.

引用

页码：5480 / 5487

页数：8

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