Evolutions of microstructure and magnetic property of wet-chemical synthesized FePt nanoparticles assisted by high magnetic field

被引：12

作者：

Duan, Xiao ^{[1
]}

Wu, Chun ^{[2
]}

Wang, Xiaoyang ^{[1
]}

Tian, Xiaomin ^{[1
]}

Pei, Wenli ^{[3
]}

Wang, Kai ^{[1
]}

Wang, Qiang ^{[1
]}

机构：

[1] Northeastern Univ, Key Lab Electromagnet Proc Mat, Minist Educ, Shenyang 110819, Liaoning, Peoples R China

[2] Liaoning Tech Univ, Sch Mat Sci & Engn, Fuxin 123000, Peoples R China

[3] Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Liaoning, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 797卷

基金：

中国国家自然科学基金;

关键词：

High magnetic field; FePt nanoparticle; Magnetic property; Shape; Size; PHASE-TRANSITION; SENSING LAYER; SHAPE; CRYSTALLINE; ENHANCEMENT; MECHANISMS; GROWTH; FILMS;

D O I：

10.1016/j.jallcom.2019.05.218

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：

A high magnetic field up to 6 T was introduced into the wet-chemical process to synthesize FePt nanoparticles. The effects of high magnetic field on the composition, crystal structure, shape, size and magnetic property of FePt nanoparticles were studied. Under the high magnetic fields, the grain size of FePt nanoparticles refined, and the shape transformed from cube to truncated-cube and concave-cube to cube. However, the high magnetic fields show no significance effects on the composition and crystal structure of FePt nanoparticles. As a result, the magnetic properties of FePt nanoparticles were tuned by high magnetic fields. The coercivity at low-temperature (10 K) and the blocking temperature both decreased at 6 T. The results highlight the feasibility of applying an in-situ high magnetic fields to tune magnetic properties of the wet-chemical synthesized nanoparticles. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：1372 / 1377

页数：6

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