The preparation of iron complex oxide nanoparticles by pulsed-laser ablation

Sasaki, Takeshi; Terauchi, S.; Koshizaki, Naoto; Umehara, Hiroyuki

doi:10.1016/s0169-4332(97)00663-6

Cited by 43 publications

(11 citation statements)

References 15 publications

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“…Our results indicate, that the mean particle size depends on the actual Ar flow and the ambient pressure used during ablation. A similar behaviour has been reported for different materials [9][10][11]. For yttrium we find from TEM micrographs (we are indebted for these investigations to the GfE RWTH Aachen), that with higher ambient Ar pressures mean particle sizes and their standard deviations are increased, see be separated by this shell.…”

supporting

confidence: 88%

Optical and electrical properties of hydrogenated yttrium nanoparticles

Bour

Reinholdt

Stepanov

et al. 2001

The European Physical Journal D

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We studied the effect of hydrogen in yttrium nanoparticles on a quartz substrate, using optical spectroscopy and electrical resistance measurements. Pulsed laser deposition is used to obtain the Y clusters in an UHV environment. We show, that these clusters are highly sensitive to monoatomic H1 produced from ambient hydrogen gas pressures, ranging from 10 −5 to 50 mbar with our experimental arrangement. The changes of optical and electrical properties due to the chemical reaction within the particles are sufficient to consider this material as a possible sensor for low concentrations of hydrogen. PACS. 71.30.+h Metal-insulator transitions and other electronic transitions -73.63.Bd Nanocrystalline materials -78.66.-w Optical properties of specific thin films

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supporting

confidence: 88%

Optical and electrical properties of hydrogenated yttrium nanoparticles

Bour

Reinholdt

Stepanov

et al. 2001

The European Physical Journal D

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“…For example, ablation of aluminum in the presence of oxygen can produce alumina nanoparticles of very high purity (Johnston et al 1992). Several studies have focused on the operating parameters that control particle size and morphology in laser ablation systems (Sasaki et al 1998;Camata et al 2000;Ogawa et al 2000). An increase in flow rate produces smaller aggregates and smaller primary particles.…”

Section: Laser Ablationmentioning

confidence: 99%

Generation and Sizing of Particles for Aerosol-Based Nanotechnology

Biskos

Vons

Yurteri

et al. 2008

KONA

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“…[8] Iron oxide nanoparticles prepared by using pulsed-laser ablationh ave also studied. [9] The preparation of metallic nanoparticles in ac yclodextrin (CD) solution is one popularm ethodt oo btain stabilized nanoparticles. [10][11][12] CD molecules are cyclic oligosaccharidest hat consist of (a-1,4)linked a-d-glucopyranose units and have ah ydrophobic cavity and hydrophilic outer surface.…”

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confidence: 99%

Preparation of Cyclodextrin–Iron Species in Water by Laser Ablation: Secondary Ion Mass Spectrometry

et al. 2015

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Supramolecular complexes between cyclodextrin and iron species are studied by using secondary ion mass spectrometry. The iron species are prepared by pulsed-laser ablation of bulk iron in water; this gives Fe(+) (56 m/z) and Fex Oy (+) (x, y=1-7) species. Cyclodextrin is added to the water either before or after the laser ablation. When it is added before laser ablation, molecular fragments of cyclodextrin are detected as dehydrated glucopyranose units (C6 H8 O4 (+) ) associated with Fe(+) , FeO(+) , and Fe2 O(+) species. The focus is to observe supramolecular host-guest complexes or adducts between intact molecules of cyclodextrin and iron species. When cyclodextrin is added after laser ablation, the relevant peak at 1210 m/z is observed and assigned as C42 H67 O35 FeNa(+) , which corresponds to a cyclodextrin molecule minus three H atoms. Two possible explanations of this finding are the presence of the host-guest C42 H67 O35 Na-Fe complex, in which Fe is in the cavity, or the presence of the adduct C42 H67 O34 Na-FeO with FeO on the outer surface; the formation of these complexes are supported by the hydrophobicity of Fe and hydrophilicity of FeO, respectively. Due to the presence of 12 % of intact C42 H70 O35 Na-Fe complex and an estimated Fe/FeO ratio of approximately 10(2) , host-guest formation is assumed to be more significant.

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The preparation of iron complex oxide nanoparticles by pulsed-laser ablation

Cited by 43 publications

References 15 publications

Optical and electrical properties of hydrogenated yttrium nanoparticles

Optical and electrical properties of hydrogenated yttrium nanoparticles

Generation and Sizing of Particles for Aerosol-Based Nanotechnology

Preparation of Cyclodextrin–Iron Species in Water by Laser Ablation: Secondary Ion Mass Spectrometry

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