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- Sabrina Disch, Erik Wetterskog, +5 authors Saeed Kamali
- Nano letters
- 2011

Grazing incidence small-angle scattering and electron microscopy have been used to show for the first time that nonspherical nanoparticles can assemble into highly ordered body-centered tetragonal mesocrystals. Energy models accounting for the directionality and magnitude of the van der Waals and dipolar interactions as a function of the degree of… (More)

It is shown how one can get numerical prediction of quantum mechanical particle behaviour without using the Schrödinger equation. The main steps of this development are the non-differentiability hypothesis, the equations of motion entailed by this hypothesis, and the numerical formulation of a simple one-dimensional problem: the particle in a box.

- Bertrand Faure, Erik Wetterskog, +10 authors Peter Svedlindh
- Nanoscale
- 2013

The magnetic 2D to 3D crossover behavior of well-ordered arrays of monodomain γ-Fe(2)O(3) spherical nanoparticles with different thicknesses has been investigated by magnetometry and Monte Carlo (MC) simulations. Using the structural information of the arrays obtained from grazing incidence small-angle X-ray scattering and scanning electron microscopy… (More)

We investigated the series of temperature and field-driven transitions in LuFe2O4 by optical and Mössbauer spectroscopies, magnetization, and x-ray scattering in order to understand the interplay between charge, structure, and magnetism in this multiferroic material. We demonstrate that charge fluctuation has an onset well below the charge ordering… (More)

- Michael A. McGuire, Andrew D. Christianson, +12 authors Gary J. Long
- 2008

We present results from a detailed experimental investigation of LaFeAsO, the parent material in the series of “FeAs” based oxypnictide superconductors. Upon cooling, this material undergoes a tetragonalorthorhombic crystallographic phase transition at 160 K followed closely by an antiferromagnetic ordering near 145 K. Analysis of these phase transitions… (More)

- Erik Wetterskog, Alice Klapper, +6 authors German Salazar-Alvarez
- Nanoscale
- 2016

A precise control over the meso- and microstructure of ordered and aligned nanoparticle assemblies, i.e., mesocrystals, is essential in the quest for exploiting the collective material properties for potential applications. In this work, we produced evaporation-induced self-assembled mesocrystals with different mesostructures and crystal habits based on… (More)

- Ralf P Stoffel, Volker L Deringer, Ronnie E Simon, Raphaël P Hermann, Richard Dronskowski
- Journal of physics. Condensed matter : an…
- 2015

We present a comprehensive survey of electronic and lattice-dynamical properties of crystalline antimony telluride (Sb2Te3). In a first step, the electronic structure and chemical bonding have been investigated, followed by calculations of the atomic force constants, phonon dispersion relationships and densities of states. Then, (macroscopic) physical… (More)

- M Beekman, R P Hermann, A Möchel, F Juranyi, G S Nolas
- Journal of physics. Condensed matter : an…
- 2010

Single-crystal x-ray diffraction from clathrate-II Na(x)Si(136) (x = 24) prepared by a new technique reveals the exceptionally large Na@Si(28) atomic displacement parameter (U(eq)) is strongly temperature dependent, and can be attributed to low-energy rattling modes associated with the Na guest. Inelastic neutron scattering (INS) spectra collected from… (More)

- J P Matthews, J F Bishop, +14 authors K F Bradstock
- British journal of haematology
- 2001

Patterns of failure were studied in two consecutive randomized trials of intensified induction therapy carried out by the Australian Leukaemia Study Group (ALSG) between 1984 and 1991 to determine the impact of dose intensification. Patients received standard dose cytarabine and daunorubicin (7-3), 7-3 plus etoposide (7-3-7) or 7-3 plus high-dose cytarabine… (More)

- Yves Gossuin, Sabrina Disch, +4 authors Michael J Sailor
- Contrast media & molecular imaging
- 2010

Maghemite particles are used as T₂ contrast agents for magnetic resonance imaging, especially for molecular and cellular imaging. Linear clusters of particles - called nanoworms - were recently developed to enhance the targeting efficiency. In this work, the magnetic and NMR relaxation properties of these nanoworms are studied at multiple magnetic fields.… (More)