Journal ArticleDOI
Magnetic properties of epitaxial (110) multilayer films of DyFe2 and YFe2
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TLDR
In this paper, a semiquantitative model describing the properties of the magnetic twister is presented and discussed, where the authors show that the magnetic response of DyFe2/YFe2 structure and that of the YFe2 seed layer are not completely independent of one another.Abstract:
Laves phase DyFe2/YFe2 multilayers have been grown epitaxially on a YFe2 seed layer, with a (110) growth direction. Magnetic measurements taken in applied fields of up to 12 T, and from 5 K to room temperature, show that short period multilayers (∼100 A) behave, collectively, as a single magnetic entity. As a result, it is possible to engineer magnetic compensation points, in a digital manner, by adjusting the thicknesses of the alternate DyFe2 and YFe2 layers. Nevertheless, the magnetic response of the DyFe2/YFe2 structure and that of the YFe2 seed layer are not completely independent of one another. Because of a mismatch in the Fe–Fe magnetic exchange at the multilayer/seed interface, a 180° magnetic soliton-like domain (“magnetic twister”) is set up in the top of the YFe2 seed layer. A semiquantitative model describing the properties of the magnetic twister is presented and discussed.read more
Citations
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Ferromagnetic materials
TL;DR: In this paper, the authors restrict their attention to the ferrites and a few other closely related materials, which are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present.
Journal ArticleDOI
Negative coercivity in epitaxially grown (110) DyFe2/YFe2 superlattices
J.-M. L. Beaujour,Sergey N. Gordeev,G. J. Bowden,P.A.J. de Groot,B.D. Rainford,R. C. C. Ward,M. R. Wells +6 more
TL;DR: In this paper, the formation of magnetic exchange springs in the magnetically soft YFe2 layers, can be used to engineer multilayer samples with a negative coercivity, by using asymmetric field cycling procedures.
Journal ArticleDOI
Discrete exchange-springs in magnetic multilayer samples
G. J. Bowden,J.-M. L. Beaujour,Sergey N. Gordeev,P.A.J. de Groot,B.D. Rainford,Maciej Sawicki +5 more
TL;DR: In this article, the properties of soft magnetic exchange-springs in both bilayer and multilayer samples are investigated, with particular emphasis on the discrete nature of the spring, and a simple relationship exists between the bending field BB, the exchange field BEX, and the number of monolayers N in the soft magnetic layer.
Journal ArticleDOI
Engineering coercivity in epitaxially grown (110) films of DyFe2–YFe2 superlattices
Maciej Sawicki,G. J. Bowden,P.A.J. de Groot,B.D. Rainford,J.-M. L. Beaujour,R.C.C Ward,M. R. Wells +6 more
TL;DR: In this paper, it is shown that the measured coercivity is in semiquantitative agreement with a simple theoretical expression, for the nucleation fields in both bilayer and multilayer compounds.
Journal ArticleDOI
Micromagnetic simulation of the magnetic exchange spring system DyFe2∕YFe2
J.P. Zimmermann,G. Bordignon,Richard P. Boardman,Thomas Fischbacher,Hans Fangohr,K.N. Martin,G. J. Bowden,A.A. Zhukov,Peter A. J. de Groot +8 more
TL;DR: In this paper, the authors reproduce hysteresis loops for net and compound-specific magnetizations by means of micromagnetic simulations and assess the quality by a direct comparison to recent x-ray magnetic circular dichroism measurements.
References
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Ferromagnetic materials
TL;DR: In this paper, the authors restrict their attention to the ferrites and a few other closely related materials, which are more closely related to anti-ferromagnetic substances than they are to ferromagnetics in which the magnetization results from the parallel alignment of all the magnetic moments present.
Journal ArticleDOI
Intermetallic compounds of rare-earth and 3d transition metals
TL;DR: A survey of the physical properties, composition and crystal structure of intermetallic compounds formed between rare-earth elements and 3D transition elements is given in this article.Apart from binary compounds, the results of pseudobinary series are also considered.
Journal ArticleDOI
Mössbauer studies of the cubic Laves iron-rare-earth intermetallic compounds
TL;DR: In this paper, the Mossbauer effect in 57Fe has been used to study the hyperfine fields at the iron sites in polycrystalline samples of the cubic Laves AFe2 intermetallics where A is Ce, Sm, Gd, Tb, Dy, Ho, Er, Y or Zr.
Journal ArticleDOI
Magnetic anisotropy in (110) epitaxial DyFe2 Laves phase.
Journal ArticleDOI
A pulsed NMR study of the rare-earth intermetallic compound GdAl2
TL;DR: In this article, it was shown that the quadrupole interaction at the Gd sites is too small to be measured ( mod P mod