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Tailoring the magnetic properties of nanocrystalline Cu-Co alloys prepared by high-pressure torsion and isothermal annealing

被引：18
|
作者：
Bachmaier, A. [1 ]
Krenn, H. [2 ]
Knoll, P. [2 ]
Aboulfadl, H. [3 ]
Pippan, R. [1 ]
机构：
[1] Austrian Acad Sci, Erich Schmid Inst Mat Sci, Leoben, Austria
[2] Karl Franzens Univ Graz, Inst Phys, Graz, Austria
[3] Saarland Univ, Chair Funct Mat, Saarbrucken, Germany
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 725卷
基金：
奥地利科学基金会;
关键词：
High-pressure torsion; Supersaturated solid solution; Nanostructured materials; Magnetic measurements; Severe plastic deformation; SEVERE PLASTIC-DEFORMATION; ATOM-PROBE TOMOGRAPHY; GIANT MAGNETORESISTANCE; GRANULAR FILMS; SYSTEMS; SUPERPARAMAGNETISM; COERCIVITY; ROUTE; GMR;
D O I：
10.1016/j.jallcom.2017.07.200
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：
In this study, severe plastic deformation by high-pressure torsion is used as a fabrication method for nanocrystalline magnetic Cu-Co alloys in bulk quantities. By subsequent isothermal annealing, phase separation of the supersaturated solid solutions can be obtained. The magnetic properties of the as-processed and annealed materials have been studied systematically and correlated to the evolving nanostructures investigated in detail by transmission electron microscopy and atom probe tomography. By additional high-pressure torsion deformation at liquid nitrogen temperature the magnetic properties of the Cu74Co26 alloy can be further tuned. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：744 / 749
页数：6
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