Competing effects of magnetocrystalline anisotropy and exchange bias in epitaxial Fe/IrMn bilayers

There is significant interest worldwide to identify new antiferromagnetic materials suitable for device applications. Key requirements for such materials are: relatively high magnetocrystalline anisotropy constant, low cost, high corrosion resistance and the ability to induce a large exchange bias, i.e., loop shift, when grown adjacent to a ferromagnetic layer. In this article, a review of recent developments on the novel antiferromagnetic material MnN is presented. This material shows potential as a replacement for the commonly used antiferromagnet of choice, i.e., IrMn. Although the results so far look promising, further work is required for the optimization of this material.

Download Full-text

Exchange bias

Physics Subject Headings (PhySH) ◽

10.29172/2c1a565cb46d49998ee31b28af298353 ◽

2018 ◽

Keyword(s):

Exchange Bias

Download Full-text

Exchange bias and anomalous vertical shift of the hysteresis loops in milled Fe/MnO2 material

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2005.03.014 ◽

2006 ◽

Vol 299 (1) ◽

pp. 11-20 ◽

Cited By ~ 44

Author(s):

E.C. Passamani ◽

C. Larica ◽

C. Marques ◽

J.R. Proveti ◽

A.Y. Takeuchi ◽

...

Keyword(s):

Exchange Bias ◽

Hysteresis Loops ◽

Vertical Shift

Download Full-text

Magnetocrystalline anisotropy and compositional order in Fe0.5Pt0.5: Calculations from anab initioelectronic model

Journal of Applied Physics ◽

10.1063/1.1523147 ◽

2003 ◽

Vol 93 (1) ◽

pp. 453-457 ◽

Cited By ~ 44

Author(s):

S. Ostanin ◽

S. S. A. Razee ◽

J. B. Staunton ◽

B. Ginatempo ◽

Ezio Bruno

Keyword(s):

Magnetocrystalline Anisotropy

Download Full-text

Temperature stability of exchange bias field and magnetoresistance of permalloy layer in Fe20Ni80/Tb-Co films

2015 IEEE Magnetics Conference (INTERMAG) ◽

10.1109/intmag.2015.7156578 ◽

2015 ◽

Author(s):

N. Kulesh ◽

K. G. Balymov ◽

O. A. Adanakova ◽

V. O. Vas'Kovskiy

Keyword(s):

Exchange Bias ◽

Temperature Stability ◽

Bias Field ◽

Exchange Bias Field

Download Full-text

Enhancement of the Coercive Field and Exchange Bias Effect in Fe3GeTe2/MnPX3 (X = S and Se) van der Waals Heterostructures

ACS Applied Materials & Interfaces ◽

10.1021/acsami.1c05265 ◽

2021 ◽

Author(s):

Hongwei Dai ◽

Hui Cheng ◽

Menghao Cai ◽

Qinghua Hao ◽

Yuntong Xing ◽

...

Keyword(s):

Exchange Bias ◽

Coercive Field ◽

Van Der Waals ◽

Bias Effect ◽

Van Der Waals Heterostructures ◽

Exchange Bias Effect

Download Full-text

Magnetic Configurations in Modulated Cylindrical Nanowires

Nanomaterials ◽

10.3390/nano11030600 ◽

2021 ◽

Vol 11 (3) ◽

pp. 600

Author(s):

Cristina Bran ◽

Jose Angel Fernandez-Roldan ◽

Rafael P. del Real ◽

Agustina Asenjo ◽

Oksana Chubykalo-Fesenko ◽

...

Keyword(s):

Domain Walls ◽

Magnetocrystalline Anisotropy ◽

Logic Gates ◽

Local Domain ◽

Magnetic Nanowires ◽

Precise Control ◽

Magnetic Layers ◽

State Present ◽

Circular Domains ◽

3D Applications

Cylindrical magnetic nanowires show great potential for 3D applications such as magnetic recording, shift registers, and logic gates, as well as in sensing architectures or biomedicine. Their cylindrical geometry leads to interesting properties of the local domain structure, leading to multifunctional responses to magnetic fields and electric currents, mechanical stresses, or thermal gradients. This review article is summarizing the work carried out in our group on the fabrication and magnetic characterization of cylindrical magnetic nanowires with modulated geometry and anisotropy. The nanowires are prepared by electrochemical methods allowing the fabrication of magnetic nanowires with precise control over geometry, morphology, and composition. Different routes to control the magnetization configuration and its dynamics through the geometry and magnetocrystalline anisotropy are presented. The diameter modulations change the typical single domain state present in cubic nanowires, providing the possibility to confine or pin circular domains or domain walls in each segment. The control and stabilization of domains and domain walls in cylindrical wires have been achieved in multisegmented structures by alternating magnetic segments of different magnetic properties (producing alternative anisotropy) or with non-magnetic layers. The results point out the relevance of the geometry and magnetocrystalline anisotropy to promote the occurrence of stable magnetochiral structures and provide further information for the design of cylindrical nanowires for multiple applications.

Download Full-text