Magnetic domain evolution with applied field in a Ni-Mn-Ga magnetic shape memory alloy

被引：47

作者：

Ge, YL ^{[1
]}

Heczko, O ^{[1
]}

Söderberg, O ^{[1
]}

Hannula, SP ^{[1
]}

机构：

[1] Helsinki Univ Technol, Mat Sci Lab, FI-02015 Helsinki, Finland

来源：

SCRIPTA MATERIALIA | 2006年 / 54卷 / 12期

关键词：

Ni-Mn-Ga; magnetic domain; surface relief; scanning electron microscopy (SEM);

D O I：

10.1016/j.scriptamat.2006.02.037

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The evolution of a magnetic domain pattern with an applied field in two perpendicular directions was studied in a Ni-Mn-Ga magnetic shape memory alloy by means of optical and scanning electron microscopy (SEM). The optical contrast of magnetic domains arises from surface undulation. This surface relief is coherent at the (101) twin boundary. However, the surface relief causes the trace of the (011) twin boundary to follow a zigzag pattern. These optical observations were confirmed by SEM Type II magnetic contrast. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：2155 / 2160

页数：6

共 7 条

[1] MAGNETIC AND MAGNETO-OPTICAL PROPERTIES OF HEUSLER ALLOYS BASED ON ALUMINUM AND GALLIUM [J].

BUSCHOW, KHJ ;

VANENGEN, PG .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1981, 25 (01) :90-96

[2] Reversible strain in Ni-Mn-Ga with collinear field and stress [J].

Faidley, LE ;

Dapino, MJ ;

Washington, GN ;

Lograsso, TA .

SMART STRUCTURES AND MATERIALS 2005: ACTIVE MATERIALS: BEHAVIOR AND MECHANICS, 2005, 5761 :501-512

[3] Investigation of magnetic domains in Ni-Mn-Ga alloys with a scanning electron microscope [J].

Ge, Y ;

Heczko, O ;

Söderberg, O ;

Hannula, SP ;

Lindroos, VK .

SMART MATERIALS AND STRUCTURES, 2005, 14 (05) :S211-S215

[4] Various magnetic domain structures in a Ni-Mn-Ga martensite exhibiting magnetic shape memory effect [J].

Ge, Y ;

Heczko, O ;

Söderberg, O ;

Lindroos, VK .

JOURNAL OF APPLIED PHYSICS, 2004, 96 (04) :2159-2163

[5] Magnetic properties and domain structure of magnetic shape memory Ni-Mn-Ga alloy [J].

Heczko, O ;

Jurek, K ;

Ullakko, K .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 226 :996-998

[6] Giant field-induced reversible strain in magnetic shape memory NiMnGa alloy [J].

Heczko, O ;

Sozinov, A ;

Ullakko, K .

IEEE TRANSACTIONS ON MAGNETICS, 2000, 36 (05) :3266-3268

[7] DIRECT OPTICAL OBSERVATION OF FERROMAGNETIC DOMAINS [J].

PARPIA, DY ;

TANNER, BK ;

LORD, DG .

NATURE, 1983, 303 (5919) :684-685

← 1 →