Nanoporous L10-FePt with high coercivity

被引：3
|
作者：
Zhang, Wei [1 ]
Ma, Dianguo [1 ]
Wang, Yingmin [1 ]
Yubuta, Kunio [2 ]
Li, Yanhui [1 ]
Sharma, Parmanand [3 ]
机构：
[1] Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Solidificat Control & Digital Preparat Te, Dalian 116024, Peoples R China
[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
[3] Tohoku Univ, New Ind Creat Hatchery Ctr NIChe, Sendai, Miyagi 9808577, Japan
来源：
SCRIPTA MATERIALIA | 2019年 / 162卷
基金：
中国国家自然科学基金;
关键词：
Nanoporous metals; L1(0)-FePt; Nanocomposite magnets; Coercivity; Electrochemical etching; MAGNETIC-PROPERTIES; FEPT NANOPARTICLES; SPRING MAGNET; THIN-FILMS; ALLOY; DISSOLUTION; METALS;
D O I：
10.1016/j.scriptamat.2018.10.029
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We demonstrate the synthesis of a novel nanoporous ordered face-centered tetragonal FePt (L1(0)-FePt) compound by selective dissolution of an Fe60Pt10B30 nanocomposite alloy, which consists of nanoscale L1(0)-FePt and Fe2B phases. The Fe2B phase is selectively removed from the alloy by electrochemical etching in H2SO4 aqueous solution, while the preserved L1(0)-FePt phase forms a uniform open bicontinuous interpenetrating ligament-channel structure with a ligament size of similar to 15 nm. The nanoporous L1(0)-FePt alloy possesses a high coercivity of 18.5 kOe. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5 / 8
页数：4
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