Characterization of Nanocrystalline Oxide Powders Prepared by                    CO&lt;sub&gt;2&lt;/sub&gt; Laser Evaporation

Müller, Eberhard; Oestreich, Christiane; Popp, U.; Michel, G; Staupendahl, G.; Henneberg, K.-H.

doi:10.14356/kona.1995012

Cited by 24 publications

(18 citation statements)

References 17 publications

(22 reference statements)

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“…To compare our results with [1] we produced ZrO 2 nanoparticles ( Table 1). Alteration of the nanoparticles size was achieved by changing of buffer gas flow rate.…”

Section: Zirconia Oxide (Zro 2 )mentioning

confidence: 99%

“…The nanopowders can be produced by a variety of methods. One of them laser-assisted material evaporation and subsequent vapor condensation has been known for a long time [1]. This approach to material production provides high-purity weakly agglomerated nanopowders, and can be applied to various targets.…”

Section: Introductionmentioning

confidence: 99%

“…But the method of laser synthesis has a peculiar property. In the case of oxide nanoparticles such as Al 2 O 3 , ZrO 2 , one has to deal with formation of metastable phases [1]. Sometimes these metastable states can give a chance to produce new materials [2] and nearly always direct the way of following technology.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Metastable states of laser synthesized oxide nanoparticles

Ivanov

Kotov

Medvedev

et al. 2009

Journal of Alloys and Compounds

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“…To compare our results with [1] we produced ZrO 2 nanoparticles ( Table 1). Alteration of the nanoparticles size was achieved by changing of buffer gas flow rate.…”

Section: Zirconia Oxide (Zro 2 )mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Metastable states of laser synthesized oxide nanoparticles

Ivanov

Kotov

Medvedev

et al. 2009

Journal of Alloys and Compounds

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“…Iron oxide magnetic nanoparticles (MNPs) were synthesized by the laser target evaporation (LTE)-the highly productive method of physical dispersion based on the evaporation of a solid pellet by laser beam with consequent condensation of vapors in the gas phase [13,14]. Special advantages of this technique are the big size of the single batch and spherical shape of the MNPs [15,16].…”

Section: Methodsmentioning

confidence: 99%

Magnetoimpedance Effect in CoFeMoSiB As-Quenched and Surface Modified Amorphous Ribbons in the Presence of Igon Oxide Nanoparticles of Water-Based Ferrofluid

et al. 2017

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Giant magnetoimpedance (GMI) has been proposed as a powerful technique for biosensing. In GMI biosensors based on the magnetic label detection the change of the impedance of sensitive element under the application of an external magnetic field was analyzed in the presence of magnetic nanoparticles in a test solution. Amorphous ribbon-based GMI biodetectors have an advantage of low operation frequency and low cost. In this work, magnetic and GMI properties of amorphous Co 68.6 Fe 3.9 Mo 3.0 Si 12.0 B 12.5 ribbons were studied in as-quenched and surface modified states both without and in the presence of maghemite ferrofluid. After the surface modification the coercivity was slightly increased and saturation magnetization decreased in good agreement with increase of the surface roughness, a decrease of magnetic elements concentrations in the surface layer, and formation of a surface protective oxide layer. The GMI difference for as-quenched ribbons in absence and in the presence of ferrofluid was measurable for the frequency range of 2 to 10 MHz and the current intensities of 1 to 20 mA. Although the proposed surface modification by the ultrasound treatment did not improve the sensitivity limit for ferrofluid detection, it did not decrease it either.

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“…The fabrication techniques providing enhanced batch sizes [4,5] attract special attention as the properties of MNPs can vary from batch to batch. One of the methods of MNPs synthesis providing a high production rate is the physical method of the laser target evaporation (LTE) [6][7][8][9]: it provides 10 to 50 nm spherical MNPs at ca. 100 g per hour production rate.…”

Section: Introductionmentioning

confidence: 99%

Interaction of iron oxide nanoparticles synthesized by laser target evaporation with polyacrylamide in composites and ferrogels

2017

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Iron oxide magnetic nanoparticles (MNPs) with average diameter 11.7 nm synthesized by laser target evaporation were used for the synthesis of composites and ferrogels based on polyacrylamide network. The chemical composition of MNPs corresponded to maghemite. It was shown that intact MNPs strongly interacted with polyacrylamide polymeric network, while the adsorption of electrostatic stabilizer on the surface of MNPs efficiently prevents such interaction. Synthesis of ferrogels was performed by the radical polymerization of acrylamide in electrostatically stabilized suspensions of MNPs in water. It was shown that the molecular structure, water uptake, and compression modulus can be controlled by the concentration of monomer taken in the synthesis.

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Characterization of Nanocrystalline Oxide Powders Prepared by CO<sub>2</sub> Laser Evaporation

Cited by 24 publications

References 17 publications

Metastable states of laser synthesized oxide nanoparticles

Metastable states of laser synthesized oxide nanoparticles

Magnetoimpedance Effect in CoFeMoSiB As-Quenched and Surface Modified Amorphous Ribbons in the Presence of Igon Oxide Nanoparticles of Water-Based Ferrofluid

Interaction of iron oxide nanoparticles synthesized by laser target evaporation with polyacrylamide in composites and ferrogels

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