Reversible transition between perpendicular and in-plane magnetization in ultrathin films

Pappas, David P.; Kämper, K. P.; Hopster, H.

doi:10.1103/physrevlett.64.3179

Cited by 459 publications

(195 citation statements)

References 31 publications

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“…1a). The peaks of the graph suggest that in the system there appears a magnetic phase transition, along with the temperature increase [15]. The network spins go from ferro- magnetic ordering to the disordered phase and in this context we observe the critical temperature increasing with the direct exchange interaction parameter.…”

Section: The Case Of Constant Anisotropymentioning

confidence: 68%

The Temperature Dependent Anisotropy Influence on the Magnetic Behavior of Thin Films

Bîrsan

Chis

2011

Acta Phys. Pol. A

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The magnetism of the layered materials attracts a great interest in the last years. In this context, it is necessary to take into account the anisotropic comportment of this kind of systems, due to its important influence on the magnetic properties that characterize these structures. In this paper, we intend to study in a numerical manner the effect of the temperature dependence of the anisotropic parameters on the specific behavior of a two-dimensional square lattice of unitary magnetic spins. Thus, using the Monte Carlo technique, we calculate the magnetic susceptibility and the specific heat of the considered physical system governed by a Heisenberg type Hamiltonian and we determine the magnetic properties of the system, induced by the temperature dependence of anisotropy that characterizes the thin film. In this context, we point out a slow decrease of the critical temperature specific to the ferromagnetism-paramagnetism phase transition, in comparison with the case of constant anisotropy. We also detect a critical temperature slight decrease along with the increasing slope of the anisotropy linear variation as a function of temperature.

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Section: The Case Of Constant Anisotropymentioning

confidence: 68%

The Temperature Dependent Anisotropy Influence on the Magnetic Behavior of Thin Films

Bîrsan

Chis

2011

Acta Phys. Pol. A

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“…The change of the balance between these quantities can result in the reorientation of the anisotropy axis -the spin reorientation transition (SRT). This phenomenon has been observed either as a function of temperature, [8][9][10][11] or thickness of the: magnetic layer [10][11][12][13][14] or capping layer. [15,16] In addition, oscillations of the magnetic anisotropy (MA) as a function of the MgO barrier thickness in the MTJs composed of the binary multilayer Co/Pt and Co/Pd were observed.…”

Section: Introductionmentioning

confidence: 99%

MgO thickness-induced spin reorientation transition in Co0.9Fe0.1/MgO/Co0.9Fe0.1 structure

Lasek

Gładczuk

Sawicki

et al. 2017

Journal of Magnetism and Magnetic Materials

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The magnetic anisotropy (MA) of Mo/Au/Co 0.9 Fe 0.1 /Au/MgO(0.7 -3 nm)/Au/Co 0.9 Fe 0.1 /Au heterostructure has been investigated at room temperature as a function of MgO layer thickness (t MgO ). Our studies show that while the MA of the top layer does not change its character upon variation of t MgO , the uniaxial out-of-plane MA of the bottom one undergoes a spin reorientation transition at t MgO of about 0.8 nm, switching to the regime where the coexistence of in-and out-ofplane magnetization alignments is observed. The magnitudes of the magnetic anisotropy constants have been determined from ferromagnetic resonance and dc-magnetometry measurements. The origin of MA evolution has been attributed to a presence of an interlayer exchange coupling (IEC) between Co 0.9 Fe 0.1 layers through the thin MgO film.

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“…This interplay leads under certain conditions to a spin-reorientation transition (SRT)-a change of preferred magnetization direction, that may occur as a function of layer thickness 3 or temperature. 4 One of the ways of changing the magnetic anisotropy of ultrathin films is affecting the surface contribution to the anisotropy, connected with the quality of the interfaces. Treating the sample thermally may lead, depending on the used materials, to improvement or degradation of that quality.…”

Section: Introductionmentioning

confidence: 99%

Irreversible modification of magnetic properties of Pt/Co/Pt ultrathin films by femtosecond laser pulses

Kisielewski

Dobrogowski

Kurant

et al. 2014

Journal of Applied Physics

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Annealing ultrathin Pt/Co/Pt films with single femtosecond laser pulses leads to irreversible spin-reorientation transitions and an amplification of the magneto-optical Kerr rotation. The effect was studied as a function of the Co thickness and the pulse fluence, revealing two-dimensional diagrams of magnetic properties. While increasing the fluence, the creation of two branches of the out-of-plane magnetization state was found. V C 2014 AIP Publishing LLC.

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Reversible transition between perpendicular and in-plane magnetization in ultrathin films

Cited by 459 publications

References 31 publications

The Temperature Dependent Anisotropy Influence on the Magnetic Behavior of Thin Films

The Temperature Dependent Anisotropy Influence on the Magnetic Behavior of Thin Films

MgO thickness-induced spin reorientation transition in Co0.9Fe0.1/MgO/Co0.9Fe0.1 structure

Irreversible modification of magnetic properties of Pt/Co/Pt ultrathin films by femtosecond laser pulses

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