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Search for "lattice parameter" in Full Text gives 77 result(s) in Beilstein Journal of Nanotechnology.

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Review and outlook: from single nanoparticles to self-assembled monolayers and granular GMR sensors

Alexander Weddemann,
Inga Ennen,
Anna Regtmeier,
Camelia Albon,
Annalena Wolff,
Katrin Eckstädt,
Nadine Mill,
Michael K.-H. Peter,
Jochen Mattay,
Carolin Plattner,
Norbert Sewald and
Andreas Hütten

Beilstein J. Nanotechnol. 2010, 1, 75–93, doi:10.3762/bjnano.1.10

concentration is modified via the adjustment of the lattice parameter. The magnetodynamics of N homogeneously magnetized particles are governed by a set of ordinary differential equations [69][70] where Id is the 3N × 3N identity matrix, γ the gyromagnetic ratio, α the empirical damping coefficient and further

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Figure 1: Schematic representation of the precursor concentration according to the LaMer model. The blue line...

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Figure 2: Interaction of different ligands with the surface of a metallic nanoparticle. There is only a singl...

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Figure 3: Transmission electron microscopy (TEM) images of Co particles of various sizes and morphologies syn...

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Figure 4: (a) Nanoparticles synthesized by micro emulsion approach and (b) by employment of the synthetic pro...

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Figure 5: Hypothesized particle formation during the biomineralization process in magnetotactic bacteria (in ...

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Figure 6: Dynamic evolution of different concentrations for the decay rates k₁ = 0.00753 s⁻¹ and k₂ = 0.0136 s...

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Figure 7: Co particles with a diameter of 4.9 and 10 nm measured at room temperature shortly after the prepar...

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Figure 8: Self-assembled FeCo nanoparticles with different dimensions: (a) The 2D-monolayer of 4.6 nm sized s...

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Figure 9: (a) Scheme of two particles with a metallic core of radius R surrounded by a ligand shell of the th...

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Figure 10: Images of self-assembled spherical Co nanoparticles: (a) TEM image of a bimodal distribution; large...

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Figure 11: TEM images of self-assembled Co particles with different morphologies. Nanodisks exhibit a typical ...

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Figure 12: Schematic representation of the tunnel magnetoresistance (TMR) sensor setup for the detection of mu...

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Figure 13: Properties of the magnetoresistive sensors. (a) Comparison between experimental and numerical data....

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Figure 14: GMR response of a monolayer consisting of 8 nm Co particles covered by a thin Cu film. Measurements...

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Figure 15: Magnetoresistance measurements at room temperature on a granular system consisting of Co nanopartic...

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Figure 16: Magnetization evolution of four interacting magnetic dipoles arranged in the corners of a square wi...

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Figure 17: Equilibrium states of 10 × 10-particle arrays with cubic and hexagonal symmetry. Magnetic moments i...

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Figure 18: Direction dependent responses of different small particle assemblies to an external magnetic field....

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Figure 19: Response maps of a 10 × 10-hexagonal gGMR sensor for a probe particle with R_p = 50 nm and M_p = 500 ...

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Figure 20: Comparison between free (dotted) and hysteretic (line) sensor behavior for cubic and hexagonal symm...

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Review

Published 22 Nov 2010

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Preparation and characterization of supported magnetic nanoparticles prepared by reverse micelles

Ulf Wiedwald,
Luyang Han,
Johannes Biskupek,
Ute Kaiser and
Paul Ziemann

Beilstein J. Nanotechnol. 2010, 1, 24–47, doi:10.3762/bjnano.1.5

as exhibited by larger or smaller FePt NPs can be consistently described by Pt segregation towards the particle surface. 2.3 Pt segregation in FePt nanoparticles For icosahedral FePt NPs, recent HRTEM observations have indicated a systematic increase of the lattice parameter towards the periphery of

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Scheme 1: Preparation of NPs by a reverse micelle technique. PS-b-P2VP or PS-b-P4VP is dispersed in anhydrous...

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Figure 1: CoCl₂ loaded PS(1779)-b-P2VP(857) reverse micelles deposited at different dip-coating velocities; (...

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Figure 2: Co NPs prepared from CoCl₂-loaded PS(1779)-b-P2VP(857) reverse micelles deposited on a Si AFM-tip b...

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Figure 3: Fe (left column) and Co (right column) NPs prepared from PS(312)-P2VP(71) (upper panels) and PS(177...

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Figure 4: SEM micrographs of FePt NPs with 2.6 nm, 4.5 nm, and 9.4 nm diameter (top panels) and their AFM hei...

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Figure 5: Photoelectron spectroscopy of Co-precursor loaded PS(1779)-P2VP(857) reverse micelles after differe...

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Figure 6: Pt-4f and Fe-2p XPS spectra of 9.8 nm FePt particles before and after exposure to ambient air for 2...

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Figure 7: TEM images of 3 nm FePt NPs on Si/SiO₂ after annealing at 650 °C for 90 min. (a) Bright-field TEM i...

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Figure 8: Aberration corrected HRTEM images of FePt particles seen along [100] direction. The L1₀ ordering al...

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Figure 9: Aberration corrected HR-TEM images of about 8 nm FePt NPs in [101] orientation. Crystal defects such as ...

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Figure 10: (a) Schematics of the compensation approach: Temperature dependence of the magnetic susceptibility ...

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Figure 11: (a) DC-demagnetization and isothermal remanent magnetization of 8 nm Co particles measured by SQUID...

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Figure 12: Element-specific magnetic hysteresis loops of 5.8 nm FePt NPs taken at the Fe-L₃ edge at T = 11 K a...

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Figure 13: Coercive field at T = 300 K as function of the diameter of FePt NPs after annealing for 30 min at T...

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Figure 14: Experimental hysteresis loops of 5.8 nm FePt NPs at 11 K and simulations using a bimodal Gaussian K...

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Figure 15: Distributions of the effective anisotropy K_eff for arrays of differently sized NPs used for simulat...

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Figure 16: (a) Coercive fields at T = 11 K and T = 300 K as function of 30 min annealing time at temperature T_A...

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Figure 17: Co-L_3,2 XA and XMCD spectra of 5.6 nm Co₅₆Pt₄₄ NPs after annealing at 700 °C taken at external fiel...

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Figure 18: Element-specific magnetic hysteresis loops of 5.8 nm Co₅₆Pt₄₄ NPs taken at the Co-L₃ edge maximum d...

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Figure 19: SEM images of 8 nm Co-based NP after oxygen plasma (a) and after Au photoseeding of reduced particl...

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Video

Full Research Paper

Published 22 Nov 2010

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