Geometrical confinement of a domain wall in a nanocontact between two NiFe wires

被引：47

作者：

Miyake, K ^{[1
]}

Shigeto, K

Mibu, K

Shinjo, T

Ono, T

机构：

[1] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Osaka 5608531, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2002年 / 91卷 / 05期

关键词：

D O I：

10.1063/1.1436552

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A nanocontact structure (typically 22x34 nm(2)) between two NiFe wires was fabricated by an electron-beam lithography and a lift-off method, and the magnetoresistance was measured. The magnetization switching process was artificially controlled by engineering the sample geometry to realize a magnetic structure with a single domain wall (DW) trapped in the nanocontact area. This domain structure was confirmed by magnetic force microscopy observations. The magnetization rotation of 180degrees was realized within the nanocontact area. The contribution of the DW to the resistance was negative, which can be understood on the basis of anisotropic magnetoresistance. (C) 2002 American Institute of Physics.

引用

收藏

页码：3468 / 3470

页数：3

相关论文

共 12 条

[1] Geometrically constrained magnetic wall [J].

Bruno, P .

PHYSICAL REVIEW LETTERS, 1999, 83 (12) :2425-2428

[2] THEORY OF RESIDUAL RESISTIVITY OF BLOCH WALLS .1. PARAMAGNETIC EFFECTS [J].

CABRERA, GG ;

FALICOV, LM .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1974, 61 (02) :539-549

[3] Magnetoresistance in excess of 200% in ballistic Ni nanocontacts at room temperature and 100 Oe [J].

García, N ;

Muñoz, M ;

Zhao, YW .

PHYSICAL REVIEW LETTERS, 1999, 82 (14) :2923-2926

[4] Domain walls and conductivity of mesoscopic ferromagnets [J].

Lyanda-Geller, Y ;

Aleiner, IL ;

Goldbart, PM .

PHYSICAL REVIEW LETTERS, 1998, 81 (15) :3215-3218

[5] Head to head domain wall structures in thin magnetic strips [J].

McMichael, RD ;

Donahue, MJ .

IEEE TRANSACTIONS ON MAGNETICS, 1997, 33 (05) :4167-4169

[6] Domain structures and switching mechanisms in patterned magnetic elements [J].

Schrefl, T ;

Fidler, J ;

Kirk, KJ ;

Chapman, JN .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1997, 175 (1-2) :193-204

[7] Injection of a magnetic domain wall into a submicron magnetic wire [J].

Shigeto, K ;

Shinjo, T ;

Ono, T .

APPLIED PHYSICS LETTERS, 1999, 75 (18) :2815-2817

[8] Resistivity due to a domain wall in ferromagnetic metal [J].

Tatara, G ;

Fukuyama, H .

PHYSICAL REVIEW LETTERS, 1997, 78 (19) :3773-3776

[9] Domain wall scattering explains 300 % ballistic magnetoconductance of nanocontacts [J].

Tatara, G ;

Zhao, YW ;

Muñoz, M ;

García, N .

PHYSICAL REVIEW LETTERS, 1999, 83 (10) :2030-2033

[10] Ballistic electron transport through magnetic domain walls [J].

van Hoof, JBAN ;

Schep, KM ;

Brataas, A ;

Bauer, GEW ;

Kelly, PJ .

PHYSICAL REVIEW B, 1999, 59 (01) :138-141