Crossover-behavior of the saturation magnetic fields of (100) and (110) Fe/Cr/Fe trilayers

Chesman, C.; Bezerra, C. G.; Albuquerque, E.L.; Mariz, A.M.

doi:10.1016/j.physleta.2006.01.047

Cited by 6 publications

(4 citation statements)

References 17 publications

(27 reference statements)

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“…In order to describe the magnetic behavior of these multilayer systems, we considered four terms in the magnetic energy: the Zeeman term (owing to interaction between the magnetization of the ferromagnetic films and the applied external magnetic field), the cubic anisotropy term (due to interaction between the crystalline structure and electronic spins) and the two aforementioned terms that couple the magnetization of Fe layers separated by Cr layers, namely bilinear and biquadratic couplings. Considering these terms, the total magnetic energy can be written as 11 ,…”

Section: Theorymentioning

confidence: 99%

“…A thorough description of how this term is calculated for both growth directions can be found in Ref. [11]. In these equations d represents the thickness of the Fe layers (which in our model is constant), M S is the saturation magnetization, n is the total number of ferromagnetic films, H 0 is the external magnetic field that we consider to be maintained within the plane of the films (in our case the x-z plane, see Fig.…”

Section: Theorymentioning

confidence: 99%

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Anomalous magnetoresistance in Fibonacci multilayers

et al. 2012

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The present paper theoretically investigates magnetoresistance curves in quasiperiodic magnetic multilayers for two different growth directions, namely [110] and [100]. We considered identical ferromagnetic layers separated by non-magnetic layers with two different thicknesses chosen based on the Fibonacci sequence. Using parameters for Fe/Cr multilayers, four terms were included in our description of the magnetic energy: Zeeman, cubic anisotropy, bilinear and biquadratic couplings. The minimum energy was determined by the gradient method and the equilibrium magnetization directions found were used to calculate magnetoresistance curves. By choosing spacers with a thickness such that biquadratic coupling is stronger than bilinear coupling, unusual behaviors for the magnetoresistance were observed: (i) for the [110] case there is a different behavior for structures based on even and odd Fibonacci generations; and more interesting, (ii) for the [100] case we found magnetic field ranges for which the magnetoresistance increases with magnetic field.

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Section: Theorymentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Anomalous magnetoresistance in Fibonacci multilayers

et al. 2012

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“…On the other hand, a considerable research interest has been devoted to study the physical properties of the trilayer systems both experimentally and theoretically in recent years. For example, NiFe/NiO/Co [1], Co/M/Fe 3 O 4 [2], NiFe/Cu/IrMn [3], Co/Ge/Co [4], Au/FePt/Au [5], LaBiMnO 3 /MgO/Co [6], Fe/Cr/Fe [7], NiFe/Bi/ NiFe [8], Co/Nb/Fe [9], Ni/Cu/Co [10], Co/Nb/Co [11], FeCo/Au/FeCo [12], NiFe/NB/ NiFe [13], Fe/MgO/Fe [14], Fe/Al/Fe [15], Pt/Co/Pt [16], FePt/Pt/Cr [17], YBCO/LCMO/YBCO [18], NiFe/FeMn/NiFe [19] have been studied experimentally. One can cite many more experimental works on trilayer systems.…”

Section: Introductionmentioning

confidence: 99%

Effective-field theory of the Ising model with three alternative layers on the honeycomb and square lattices

Deviren

Canko

Keskín

2008

Journal of Magnetism and Magnetic Materials

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“…As the magnetic field is increased, a second loop emerges at around H ∼ 220 Oe. All transitions are of the first-order type, characterized by discontinuous jumps in magnetization [18]. Fig.…”

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confidence: 95%

Theoretical and experimental study of Fe/Cr nanometric quasiperiodic multilayers

Freire¹,

Salvador²,

Corrêa³

et al. 2011

Solid State Communications

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a b s t r a c tAn experimental and theoretical study of magnetization curves of Fe/Cr nanometric magnetic films grown with the structure of the quasiperiodic Fibonacci sequence is presented. Fe ferromagnetic films with interfilm exchange coupling provided by intervening Cr non-ferromagnetic layers were grown on MgO (100) by dc magnetron sputtering at 300• C. The magnetization curves were investigated using the magneto-optical Kerr effect with the external field applied along the easy axis. The theoretical approach for this system is based on a realistic phenomenological model that includes the following contributions to free magnetic energy: Zeeman, cubic magneto-crystalline anisotropy, as well as bilinear and biquadratic exchange energies. Our numerical results are in very good agreement with the experimental data.

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Crossover-behavior of the saturation magnetic fields of (100) and (110) Fe/Cr/Fe trilayers

Cited by 6 publications

References 17 publications

Anomalous magnetoresistance in Fibonacci multilayers

Anomalous magnetoresistance in Fibonacci multilayers

Effective-field theory of the Ising model with three alternative layers on the honeycomb and square lattices

Theoretical and experimental study of Fe/Cr nanometric quasiperiodic multilayers

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