Structural investigations of Fe-Ga alloys by high-energy x-ray diffraction

被引：17

作者：

Nie, Zhihua ^{[1
]}

Wang, Zilong ^{[1
]}

Liang, Yanbin ^{[1
]}

Cong, Daoyong ^{[2
]}

Li, Gaoqiang ^{[1
]}

Zhu, Cheng ^{[1
]}

Tan, Chengwen ^{[1
]}

Yu, Xiaodong ^{[1
]}

Ren, Yang ^{[3
]}

Wang, Yandong ^{[2
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[3] Argonne Natl Lab, Xray Sci Div, 9700 S Cass Ave, Argonne, IL 60439 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 763卷

基金：

中国国家自然科学基金;

关键词：

High-energy x-ray diffraction; Crystal structure; Magnetostriction; Fe-Ga; Superlattice; SIMILAR MAGNETIC-ALLOYS; PHASE-TRANSITIONS; MAGNETOSTRICTIVE PROPERTIES; EXTRINSIC MAGNETOSTRICTION; HETEROGENEOUS MODEL; AL ALLOYS; TEMPERATURE; MAGNETOELASTICITY; BULK; ANELASTICITY;

D O I：

10.1016/j.jallcom.2018.05.327

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：

The magnetostriction of Fe-Ga alloys is significantly affected by the Ga content, which displays two positive peaks with increasing Ga concentration. This work presents a systematic structural investigation of rapidly-cooled Fe-Ga alloys by the synchrotron-based high-energy x-ray diffraction. Ga-rich clusters are evidenced for the alloys beyond the first magnetostriction peak, which is identified by the anomalous peak broadening for the (200) fundamental reflection and a shrink of lattice parameter. The generation of Ga-rich clusters in A2 matrix results in the sudden decrease of magnetostriction after the first magnetostriction peak. These findings are important for designing high-performance Fe-Ga magnetostrictive alloys by structural tuning. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：223 / 227

页数：5

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