Magnetization-induced third harmonic generation in magnetic nanogranular films: Correlation with giant magnetoresistance

Murzina, T. V.; Kim, E. M.; Matskevich, S. E.; Aktsipetrov, O.A.; Kravets, A. F.; Vovk, A. A.

doi:10.1134/1.1738714

Cited by 4 publications

(4 citation statements)

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“…Generation of second and/or third harmonics in nanomaterials involves two/three photon absorption (TPA) and is due to a purely nonlinear optical phenomena [18,19]. Magnetization induced third harmonic generation have been reported in the recent past [20]. On the other hand, photochromism deals with the transient excitation of electrons and involves change in oxidation state of a particular ion temporarily.…”

Section: Resultsmentioning

confidence: 99%

Photochromism and magneto-optic response of ZnO:Mn semiconductor quantum dots fabricated by microemulsion route

Misra

Roy

Mohanta³

et al. 2008

Open Physics

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Abstract:ZnO:Mn semiconductor quantum dots were prepared by solution casting led microemulsion route. Quantum dots of average size ∼2 nm were noticed in transmission electron micrographs. The present work highlights colour change phenomena (photochromic effect) of quantum dots while subjected to photon illumination. The magneto-optic measurements e.g. magnetic field (H) vs angle of rotation (θ) show step like behavior and is ascribed to the quantum confinement effect of diluted magnetic ZnO:Mn nanostructures. Further, underlying mechanism responsible for exhibiting photochromism and magneto-optic effects are also discussed.

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Section: Resultsmentioning

confidence: 99%

Photochromism and magneto-optic response of ZnO:Mn semiconductor quantum dots fabricated by microemulsion route

Misra

Roy

Mohanta³

et al. 2008

Open Physics

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“…(3)cryst ijkl tensors [10]. Magnetization-induced rotation of the TH wave polarization up to 10 0 ± 2 0 is observed in Fe(110) nanolayers.…”

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confidence: 93%

“…Figure 2, a shows the dependence of ρ 3ω on the concentration of Co in Co x Ag 1−x films, which reveals a monotonic increase for x > 0.4 and a local maximum in the vicinity of x ≈ 0.3. The former corresponds to a straightforward monotonic increase of the ferromagnetic phase in the Co fraction of the composite material as the concentration of Co exceeds the percolation threshold [10]. A local maximum corresponds to the specific magnetic properties of nanogranules; ρ 3ω (x) attains a local maximum at the same region of Co concentration (0.3 -0.35) as the concentration dependence of ρ GMR .…”

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confidence: 95%

“…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.…”

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confidence: 98%

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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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Nonlinear Optics in Magnetic Nanostructures

Russek¹,

Evarts²,

Usselman³

2015

Handbook of Nanomagnetism

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Magnetization-induced third harmonic generation in magnetic nanogranular films: Correlation with giant magnetoresistance

Cited by 4 publications

References 12 publications

Photochromism and magneto-optic response of ZnO:Mn semiconductor quantum dots fabricated by microemulsion route

Photochromism and magneto-optic response of ZnO:Mn semiconductor quantum dots fabricated by microemulsion route

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

Nonlinear Optics in Magnetic Nanostructures

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