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7 papers · 2 filters
Multi-phase-field analysis of short-range forces between diffuse interfaces
N. Wang, R. Spatschek, A. Karma
We characterize both analytically and numerically short-range forces between spatially diffuse interfaces in multi-phase-field models of polycrystalline materials. During late-stag…
High coercivity cobalt carbide nanoparticles processed via polyol reaction: A new permanent magnet material
V. G. Harris, Y. Chen, A. Yang +13
Cobalt carbide nanoparticles were processed using polyol reduction chemistry that offers high product yields in a cost effective single-step process. Particles are shown to be acic…
Relaxation Mechanism for Ordered Magnetic Materials
C. Vittoria, S. D. Yoon, A. Widom
We have formulated a relaxation mechanism for ferrites and ferromagnetic metals whereby the coupling between the magnetic motion and lattice is based purely on continuum arguments…
Role of Oxygen Electrons in the Metal-Insulator Transition in the Magnetoresistive Oxide LaSrMnO Probed by Compton Scattering
B. Barbiellini, A. Koizumi, P. E. Mijnarends +7
We have studied the [100]-[110] anisotropy of the Compton profile in the bilayer manganite. Quantitative agreement is found between theory and experiment with respect to the anisot…
The Positronium state in quartz
B. Barbiellini, P. M. Platzman
The positronium state in quartz is described by a linear superposition of two states: the first describing the free positron in the crystal and the second corresponding to a positr…
How the hydrogen bond in NHF is revealed with Compton scattering
B. Barbiellini, Ch. Bellin, G. Loupias +2
In order to probe electron wave functions involved in the bonding of NHF, we have performed Compton scattering experiments in an oriented single crystal and in a powder. Ab ini…