Pseudo exchange bias due to rotational anisotropy

被引：10

作者：

Ehrmann, A. ^{[1
]}

Komraus, S. ^{[2
]}

Blachowicz, T. ^{[2
]}

Domino, K. ^{[2
]}

Nees, M. K. ^{[3
]}

Jakobs, P. J. ^{[3
]}

Leiste, H. ^{[3
]}

Mathes, M. ^{[4
]}

Schaarschmidt, M. ^{[4
]}

机构：

[1] Bielefeld Univ Appl Sci, Fac Engn & Math, D-33619 Bielefeld, Germany

[2] Silesian Tech Univ, Inst Phys, Ctr Sci & Educ, PL-44100 Gliwice, Poland

[3] KIT, KNMF, D-76344 Eggenstein Leopoldshafen, Germany

[4] ACCESS eV, D-57072 Aachen, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 412卷

关键词：

Exchange bias; Rotational anisotropy; Nanostructures; Simulation; Magnetization reversal; Patterned structures; MOKE; Lithography; BILAYERS; FILMS;

D O I：

10.1016/j.jmmm.2016.03.071

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ferromagnetic nanostructure arrays with particle dimensions between 160 nm and 400 nm were created by electron-beam lithography. The permalloy structures consist of rectangular-shaped walls around a square open space. While measuring their magnetic properties using the Magneto-Optical Kerr Effect (MOKE), in some angular regions an exchange bias (EB) seemed to appear. This paper gives an overview of possible reasons for this "pseudo exchange bias" and shows experimentally and by means of micro magnetic simulations that this effect can be attributed to unintentionally measuring minor loops. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：7 / 10

页数：4

共 22 条

[1] Directional-dependent coercivities and magnetization reversal mechanisms in fourfold ferromagnetic systems of varying sizes
Blachowicz, T.
Ehrmann, A.
Steblinski, P.
Palka, J.
[J]. JOURNAL OF APPLIED PHYSICS, 2013, 113 (01)
[2] Fourfold nanosystems for quaternary storage devices
Blachowicz, T.
Ehrmann, A.
[J]. JOURNAL OF APPLIED PHYSICS, 2011, 110 (07)
[3] Rotatable anisotropy in epitaxial exchange-biased materials revealed by Brillouin light scattering
Blachowicz, T.
[J]. JOURNAL OF APPLIED PHYSICS, 2007, 102 (04)
[4] Exchange bias in epitaxial CoO/Co bilayers with different crystallographic symmetries
Blachowicz, Tomasz
Tillmanns, Andrea
Fraune, Michael
Ghadimi, Reza
Beschoten, Bernd
Guentherodt, Gernot
[J]. PHYSICAL REVIEW B, 2007, 75 (05)
[5] Thickness dependence of linear and quadratic magneto-optical Kerr effects in ultrathin Fe(001) films
Buchmeier, M.
Schreiber, R.
Buergler, D. E.
Schneider, C. M.
[J]. PHYSICAL REVIEW B, 2009, 79 (06)
[6] Donahue M.J., 1999, OOMMF USERS GUIDE VE
[7] Magnetic properties of square Py nanowires: Irradiation dose and geometry dependence
Ehrmann, A.
Blachowicz, T.
Komraus, S.
Nees, M. -K.
Jakobs, P. -J.
Leiste, H.
Mathes, M.
Schaarschmidt, M.
[J]. JOURNAL OF APPLIED PHYSICS, 2015, 117 (17)
[8] Influence of fourfold anisotropy form on hysteresis loop shape in ferromagnetic nanostructures
Ehrmann, Andrea
Blachowicz, Tomasz
[J]. AIP ADVANCES, 2014, 4 (08):
[9] A phenomenological theory of damping in ferromagnetic materials
Gilbert, TL
[J]. IEEE TRANSACTIONS ON MAGNETICS, 2004, 40 (06) : 3443 - 3449
[10] Rotation of exchange anisotropy in biased Co/CoO bilayers
Gredig, T
Krivorotov, IN
Merton, C
Goldman, AM
Dahlberg, ED
[J]. JOURNAL OF APPLIED PHYSICS, 2000, 87 (09) : 6418 - 6420

← 1 2 3 →