Spin-density waves and reorientation effects in thin epitaxial Cr films covered with ferromagnetic and paramagnetic layers

Bödeker, P.; Schreyer, A.; Zabel, and H.

doi:10.1103/physrevb.59.9408

Cited by 59 publications

(55 citation statements)

References 55 publications

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“…From these studies, it was concluded that the formation of SDW magnetism in thin Cr films is governed by a strong exchange coupling acting at the Cr/Fe interface on the one hand and by the interface structure/disorder on the other hand [2,6,7]. Similar observations have also been made for the SDW behavior in Cr/Ni and Cr/Co systems [8].…”

mentioning

confidence: 68%

Proximity effect of vanadium on strain and spin-density waves in thin Cr films

Кравцов

Bručas

Hjörvarsson

et al. 2005

Journal of Magnetism and Magnetic Materials

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mentioning

confidence: 68%

Proximity effect of vanadium on strain and spin-density waves in thin Cr films

Кравцов

Bručas

Hjörvarsson

et al. 2005

Journal of Magnetism and Magnetic Materials

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“…[1][2][3][4][5] At the same time, there is compelling evidence that magnetic noncollinearity is fairly common in these alloys. For instance, experimental studies of iron-chromium interfaces [6][7][8][9][10] showed that thin Cr (100) and (110) films in contact with FM Fe have noncollinear magnetic structures where the local moments of Cr atoms are orthogonal to those of Fe atoms. These results were confirmed by self-consistent periodic Anderson model calculations performed for stepped (100) Fe/Cr interfaces.…”

Section: Introductionmentioning

confidence: 99%

Noncollinear magnetism at interfaces in iron-chromium alloys: The ground states and finite-temperature configurations

Lavrentiev

Soulairol

et al. 2011

Phys. Rev. B

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Noncollinear configurations of local magnetic moments at Fe/Cr interfaces in Fe-Cr alloys are explored using a combination of density functional theory (DFT) and magnetic cluster expansion (MCE) simulations. We show that magnetic frustration at Fe/Cr interfaces can be partially resolved through the formation of noncollinear magnetic structures, which occur not only at stepped but also at smooth interfaces, for example at the (110) interface where magnetic noncollinearity predicted by simulations is observed experimentally. Both DFT and MCE simulations predict that the magnetically frustrated (110) interface has the highest formation energy in the low-temperature limit. Using MCE and kinetic Monte Carlo simulations, we investigate the effect of temperature on magnetic order at interfaces and on interface energies. We find that while the low-temperature noncollinear bulk magnetic configurations of Cr remain stable up to the Néel temperature, the chromium atomic layers close to the interfaces retain their magnetic order well above this temperature. We also show that above the Curie temperature the (110) interface is the lowest energy interface, in agreement with DFT simulations of interfaces separating ferromagnetic Fe and nonmagnetic Cr.

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“…The Fermi surface of Cr has been the subject of particular attention because of its similarity to that of high temperature superconductors [9]. In thin films, the magnetic properties of Cr are strongly modified by the stress and the presence of ferromagnetic capping layers as observed by neutron diffraction [4]. In Fe/Cr (001) epitaxial MML, Fullerton et al [8] showed the loss of magnetic long range order in Cr layers for thicknesses t Cr < 42Å.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the electronic contribution to the low-temperature specific heat of an Fe/Cr magnetic multilayer

et al. 2002

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We measured the low temperature specific heat of a sputtered (F e 23Å /Cr 12Å ) 33 magnetic multilayer, as well as separate 1000Å thick Fe and Cr films. Magnetoresistance and magnetization measurements on the multilayer demonstrated antiparallel coupling between the Fe layers. Using microcalorimeters made in our group, we measured the specific heat for 4 < T < 30 K and in magnetic fields up to 8 T for the multilayer. The low temperature electronic specific heat coefficient of the multilayer in the temperature range 4 < T < 14 K is γ M L = 8.4 mJ/K 2 g − at. This is significantly larger than that measured for the Fe or Cr films (5.4 and. 3.5 mJ/K 2 mol respectively). No magnetic field dependence of γ M L was observed up to 8 T .These results can be explained by a softening of the phonon modes observed in the same data and the presence of an Fe-Cr alloy phase at the interfaces.75.70 (magnetic multilayer), 75.40 (specific heat of magnetic materials) Typeset using REVT E X 1

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Spin-density waves and reorientation effects in thin epitaxial Cr films covered with ferromagnetic and paramagnetic layers

Cited by 59 publications

References 55 publications

Proximity effect of vanadium on strain and spin-density waves in thin Cr films

Proximity effect of vanadium on strain and spin-density waves in thin Cr films

Noncollinear magnetism at interfaces in iron-chromium alloys: The ground states and finite-temperature configurations

Enhancement of the electronic contribution to the low-temperature specific heat of an Fe/Cr magnetic multilayer

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