Size dependence of non-magnetic thickness in YIG nanoparticles

Niyaifar, M.; Mohammadpour, Hory; Dorafshani, M.; Hasanpour, Ahmad

doi:10.1016/j.jmmm.2016.02.097

Cited by 35 publications

(8 citation statements)

References 29 publications

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“…Figure 5 presents the diffractograms on a linear scale after LAL, ns-LML, and ps-LFL. It is obvious that all diffractograms show the typical signature of YIG nanoparticles [52][53][54]. After LAL, however, an additional broad peak is found underneath the YIG(420) diffraction peak, which may indicate small grains of YIG or an additional phase.…”

Section: Structural Analysismentioning

confidence: 94%

Manipulation of the Size and Phase Composition of Yttrium Iron Garnet Nanoparticles by Pulsed Laser Post-Processing in Liquid

et al. 2020

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Modification of the size and phase composition of magnetic oxide nanomaterials dispersed in liquids by laser synthesis and processing of colloids has high implications for applications in biomedicine, catalysis and for nanoparticle-polymer composites. Controlling these properties for ternary oxides, however, is challenging with typical additives like salts and ligands and can lead to unwanted byproducts and various phases. In our study, we demonstrate how additive-free pulsed laser post-processing (LPP) of colloidal yttrium iron oxide nanoparticles using high repetition rates and power at 355 nm laser wavelength can be used for phase transformation and phase purification of the garnet structure by variation of the laser fluence as well as the applied energy dose. Furthermore, LPP allows particle size modification between 5 nm (ps laser) and 20 nm (ns laser) and significant increase of the monodispersity. Resulting colloidal nanoparticles are investigated regarding their size, structure and temperature-dependent magnetic properties.

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Section: Structural Analysismentioning

confidence: 94%

Manipulation of the Size and Phase Composition of Yttrium Iron Garnet Nanoparticles by Pulsed Laser Post-Processing in Liquid

et al. 2020

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“…The order parameter is in principle suppressed in the ferromagnet over a certain coherence length near the interface. Yet, YIG is known not to experience a significant reduction of the magnetic moment near the surface (dead layer effect [16]), or interface with metals [17]. Therefore, a constant magnetic moment m Y IG can be assumed in the ferromagnet.…”

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confidence: 99%

Photo-spin voltaic effect and photo-magnetoresistance in proximized platinum

Ruotolo

2017

Applied Physics Letters

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Spin orbit coupling in heavy metals allows conversion of unpolarized light into an open-circuit voltage. We experimentally prove that this photo-spin voltaic effect is due to photo-excitation of carriers in the proximized layer and can exist for light in the visible range. While carrying out the experiment, we discovered that, in closed-circuit conditions, the anisotropic magnetoresistance of the proximized metal is a function of the light intensity. We name this effect photomagnetoresistance. A magneto-transport model is presented that describes the change of magnetoresistance as a function of the light intensity. arXiv:1708.04130v2 [cond-mat.str-el]

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“…YIG is ferrimagnetic with the spins of the Fe 3+ cations at the octahedral and tetrahedral sublattices aligned in opposite directions. Hence the magnetization can be varied by substituting the Fe 3+ cations the solid with magnetic/diamgnetic ones [3][4][5]. Consequently, determining the crystal defect structure of cation-doped YIG compounds is of crucial importance in understanding the material's behavior.…”

Section: Figure 1 About Herementioning

confidence: 99%

“…Figure 1 shows the compound to have bcc unit cell (space group ; no. 230) where the Y 3+ ions reside at the dodecahedral (24c) sites, 2/5 of the Fe 3+ ions occupy the octahedral (16a) sites and the remaining Fe 3+ ions occupy the tetrahedral (24d) sites in the O -2 sublattice [4,5]. The compositional formula is adequately represented as where the brackets refer to dodecahedral, octahedral (a) and tetrahedral (d) sites respectively.…”

Section: Introductionmentioning

confidence: 99%