External magnetic field effect on third-harmonic generation in Bi, Al-doped yttrium iron garnet

Shimura, Junko; Ohkoshi, Shin‐ichi; Hashimoto, Kazuhito

doi:10.1063/1.1574843

Cited by 9 publications

(6 citation statements)

References 17 publications

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“…High surface and interface sensitivity along with large values of nonlinear magnetization-induced effects in SHG resulted in a fast development of this field of research during the last decade, when the advantages of the magnetization-sensitive SHG were demonstrated for clean surfaces and interfaces [3,4]. At the same time, higher-order (cubic) nonlinear magneto-optical effects were observed only recently [5] and the possibilities of this magnetization-sensitive probe for the diagnostics of magnetic structures are not clear till now.…”

Section: Introductionmentioning

confidence: 97%

Cubic and quadratic nonlinear magneto-optical Kerr effect in magnetic nanogranular films

et al. 2006

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We present the results of the experimental studies of nonlinear-optical and nonlinear magneto-optical properties of granular magnetic films exhibiting giant magnetoresistance effect. The samples under study are Co-containing nanogranular films of the composition (Co) x (Al 2 O 3 ) 1-x , the concentration of cobalt, x, being varied in a wide range. A strong azimuthal anisotropy in the intensity of the second (SHG) and third harmonics (THG) is observed which proves the anisotropic crystallographic structure of granular films. The nonlinear magneto-optical Kerr effect (NOMOKE) in SHG and THG is studied in the films for the geometry of the transversal magnetization. The dependence of the NOMOKE contrast in the SHG (THG) intensity is found to be a non-monotonous function of Co content in the films. The dependence of the magnetization-induced components of the quadratic susceptibility on the content of Co in the films is estimated.

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Section: Introductionmentioning

confidence: 97%

Cubic and quadratic nonlinear magneto-optical Kerr effect in magnetic nanogranular films

et al. 2006

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“…Meanwhile, this high surface sensitivity of MSHG is extruded in shadow third-order nonlinear magneto-optical effects because of their bulk localization as well as their small expected value. This is why the observation of magnetization-induced third-harmonic generation (MTHG) is discussed just recently in garnet films [8,9] and magnetic alloys [10]. On the other hand, both the surface MSHG and bulk MTHG are expected to supplement each other as magneto-optical probes and provide complementary information about the magnetic properties of nanostructures.…”

mentioning

confidence: 99%

“…where I 3ω (M ↑↓) are the THG intensities for the opposite directions of the magnetization, χ [8,9] shows that magnetizationinduced variations of the THG intensity result from the internal homodyne effect in the geometry of the transversal Kerr effect (see the left-hand inset in Figure 1, a). To extract the ratio of magnetic and crystallographic components of χ…”

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confidence: 99%

Magnetization-induced optical third-harmonic generation in Co and Fe nanostructures

et al. 2006

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Magnetization-induced optical third-harmonic generation (MTHG) is observed in magnetic nanostructures: Co and F e nanolayers and granular films containing Co nanoparticles. Magnetizationinduced variations of the MTHG characteristics in these nanostructures exceed the typical values of linear magneto-optical Kerr effect by at least an order of magnitude: the maximum of magnetic contrast in the MTHG intensity is up to 0.2, the angle of polarization rotation for MTHG is 10 • and the relative phase shift is up to 100 • . PACS numbers:Magneto-optics, with its more than century-long history, remains one of the most important experimental methods in studies of magnetism. Recently, significant attention has been directed towards nonlinear magnetooptics [1]: nonlinear magneto-optical Faraday and Kerr effects in second-harmonic generation (SHG) were observed experimentally in yttrium-iron-garnet films [2], then at surfaces of magnetic metals [3], in magnetic multilayers [4] and nanogranules [5]. Experimental measurements [2-5] and theoretical estimates [6] reveal the typical magnitudes of the magnetization-induced effects in SHG: the magnetization-induced variations of the SHG intensity and rotation of the second-harmonic (SH) wave polarization, may exceed the linear magneto-optical Kerr effect (MOKE) by orders of magnitude. * Electronic address: aktsip@shg.ru † Electronic address: mur@shg.ru

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“…10 In that study, garnet films revealed a rotation of about 4 • and neither the spectral characteristics nor the microscopic origin of the effect were investigated, so that the general aspects of the nature and potential of the TFR remained unclear.…”

Section: B Nonlinear Magneto-optical Rotationmentioning

confidence: 99%

Giant third-order magneto-optical rotation in ferromagnetic EuO

et al. 2012

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A magnetization-induced rotation in the third-order nonlinear optical response is observed in out-of-planemagnetized epitaxial EuO films. We discuss the relation of this nonlinear magneto-optical rotation to the linear Faraday rotation. It is allowed in all materials but, in contrast to the linear Faraday rotation, not affected by the reduction of the thickness of the material. Thus the third-order magneto-optical rotation is particularly suitable for probing the magnetization of functional magnetic materials such as ultrathin films and multilayers.

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External magnetic field effect on third-harmonic generation in Bi, Al-doped yttrium iron garnet

Cited by 9 publications

References 17 publications

Cubic and quadratic nonlinear magneto-optical Kerr effect in magnetic nanogranular films

Cubic and quadratic nonlinear magneto-optical Kerr effect in magnetic nanogranular films

Magnetization-induced optical third-harmonic generation in Co and Fe nanostructures

Giant third-order magneto-optical rotation in ferromagnetic EuO

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