NDLI: Magnetic ordering in (110) Eu films in an applied magnetic field

Content Provider	Springer Nature Link
Author	Soria, S. Dufour, C. Dumesnil, K. Mangin, Ph.
Copyright Year	2008
Abstract	Below its ordering temperature (T N = 90 K), bulk bcc Eu has a helical magnetic state with propagation vectors along the three equivalent 〈100〉 directions. In contrast, epitaxial (110)Eu films exhibit a unique magnetic ordering: the domain with a magnetic helix propagating along the in-plane [001] direction vanishes on cooling, at the expense of other domains with helices propagating along [100] and [010]. This paper is devoted to the study of the stability of the magnetic domains in an external magnetic field using neutron scattering experiments and macroscopic magnetization measurements. The helix propagating along the [001] direction can be restored by the application of an external field along this direction. On the contrary, when a magnetic field is applied along an intermediate direction, specifically [ $$ \bar 1 $$ 10], the domain with a helix propagating along [001] is suppressed. Both effects depend on the film thickness. They are explained if one considers that, because of the low magnetic anisotropy of Eu, a helix with a propagation vector parallel to (or close to) the applied magnetic field is energetically more favourable than cycloidal structures with unchanged propagation vectors. Finally, the amplitudes of the propagation vectors and their directions (that are modified in films compared to bulk) do not vary under magnetic field.
Starting Page	469
Ending Page	478
Page Count	10
File Format	PDF
ISSN	14346028
Journal	The European Physical Journal B
Volume Number	63
Issue Number	4
e-ISSN	14346036
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-07-10
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Superconductivity, Superfluidity, Quantum Fluids Solid State Physics and Spectroscopy Fluids Complexity Physics Condensed Matter
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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