Interface Magnetism and Possible Quantum Well Oscillations in Ultrathin Co/Cu Films Observed by Magnetization Induced Second Harmonic Generation

Wierenga, H.A.; Jong, de W Wim; Prins, Mwj Menno; Rasing, T.H.M.; Vollmer, R.; Kirilyuk, Andrei; Schwabe, H.; Kirschner, J.

doi:10.1103/physrevlett.74.1462

Cited by 143 publications

(89 citation statements)

References 23 publications

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“…MSHG is a nonlinear magneto-optical technique that has been shown to be a powerful and simple tool to study magnetic multilayers, combining an extreme surface/interface sensitivity 4,5 with very large magneto-optical effects. For the MSHG measurements, a pulsed laser beam from a Ti: sapphire laser ͑82 MHzϫ100 fs pulses at 840 nm and average power of 700 mW͒ was focused onto the sample with a spot diameter of 100 m. Measurements were done in the transversal configuration ͑for details see Ref.…”

Section: Methodsmentioning

confidence: 99%

Investigation of the as-deposited characteristics and the thermal stability of CoFe and Ru based multilayers

Bal

Keen

Rasing

et al. 2002

Journal of Applied Physics

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The as-deposited characteristics and the thermal stability at 300°C of CoFe and Ru based ultrathin multilayers have been investigated and structural and magnetic characteristics have been correlated. These layer systems constitute the basis of the hard artificial antiferromagnetic subsystem used in current sensors. The coercive field of 2 nm CoFe ͑3.5 kA/m͒ is found to increase linearly by a factor of 13 upon increasing the Ru seed layer thickness from 5 to 40 nm. The weakening of the exchange coupling due to the sharpening of the crystallite boundaries is likely the origin. Magnetization-induced second-harmonic generation measurements show that the CoFe/Ru interface remains magnetically active after 36 h with a magnetic contrast of 0.17, indicating that no strong mixing at the interface is taking place. In accordance, the saturation field of the antiferromagnetic coupling in Ru 5 /CoFe 2 /Ru 0.7 /CoFe 2 /Ru ͑nm͒ does not change during 20 h of annealing. However, slowly a remanent magnetization develops which is thought to be due to the formation of ferromagnetic shortcuts through the crystallite boundaries of the coupler.

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Section: Methodsmentioning

confidence: 99%

Investigation of the as-deposited characteristics and the thermal stability of CoFe and Ru based multilayers

Bal

Keen

Rasing

et al. 2002

Journal of Applied Physics

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“…similarly to t.he linear case, there is no nonlinear Kerr rotation in the transversal geometry. However, in contrast to the linear case, the magnetization induced intensity changes can be very large [6] (for the same reason as there are large nonlinear rotations). Coupled with the simplicity of the experimental configurations, this makes the transversal geometry very attractive (as will be shown below).…”

Section: Introductionmentioning

confidence: 99%

“…However, the origin of the large nonlinear magneto-optical effects, as demonstrated for example on Fe/Cr [.5) or Co [6), can simply be understood from Eq. 3.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Magneto-Optics:a Novel Probe for Magnetic Interfaces

Rasing

1998

J. Magn. Soc. Jpn.

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.. -Magnetization induced second harmonic generation (MSHG) is a new nonlinear magneto-optical technique that combines interface sensitivity with huge magneto-optical effects. These effects are due to the simultaneous breaking of inversion symmetry (at. interfaces) and timereversal symmetry (by the magnetization). The higher-order nonlinear optical t.ensor is also responsible for the appearance of essentially new magneto-optical effect.s that have no equivalent in the linear case.Because most magnet.ically ordered materials are centrosymmet.ric in their bulk form, MSHG is a particularly useful probe to st.udy the magnetic properties of the interfaces in magnetic multi layer systems, that are used for recording as well as sensor materials.In this paper, I will give a brief introduction and overview of this novel nonlinear magneto-optical technique, and discuss some recent advances in this field. In particular the possibilities to probe insitu the magnetic and structural (changes in the) interface properties of magnetic multilayer sensor and recording materials will be illustrated.

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“…(6)- (9) by adding a constant isotropic term D, as was done in Eq. (10). The rotational anisotropy of the total SH intensity is shown in Fig.…”

Section: A Phase-sensitive Measurements Of Shgmentioning

confidence: 99%

Selective surface/interface characterization of thin garnet films by magnetization-induced second-harmonic generation

et al. 2004

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Magnetization~induced second-harmonic generation (SHG) has been used for the study of thin garnet films. The strong optical absorption of these films at the second harmonic frequency provides a unique possibility to study magnetic and structural properties of the film surface and film/substrate interface separately. When studied in transmission at normal incidence all relevant elements of the crystallographic part of the nonlinear optical susceptibility tensor vanish identically, while a magnetization· induced contribution remains. The purely magnetic origin of SHG from the interface is unambiguously demonstrated. From measurements of the SHG rotational anisotropy and magnetic field dependence, the surface is found to have inclusions which act as nonmagnetic sources of SHG, while the anisotropy causing easy in· plane magnetization is found to be stronger at the interface with the substrate than at the surface of the film.

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Interface Magnetism and Possible Quantum Well Oscillations in Ultrathin Co/Cu Films Observed by Magnetization Induced Second Harmonic Generation

Abstract: Please be advised that this information was generated on 2018-05-11 and may be subject to change.

Cited by 143 publications

References 23 publications

Investigation of the as-deposited characteristics and the thermal stability of CoFe and Ru based multilayers

Investigation of the as-deposited characteristics and the thermal stability of CoFe and Ru based multilayers

Nonlinear Magneto-Optics:a Novel Probe for Magnetic Interfaces

Selective surface/interface characterization of thin garnet films by magnetization-induced second-harmonic generation

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