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Origin of charge-orbital order in the half-doped manganites
(Physical Review Letters, 2002)
The microscopic origin of the charge and orbital order in the half-doped manganites is examined from ab initio density-functional calculations and exact diagonalization studies. It is shown that the dominant mechanism ...
Electronic structure and exchange interaction in the layered perovskite Sr3Mn2O7
(Physical Review B: Condensed Matter and Materials Physics, 2002)
The electronic structure of the Ruddlesden-Popper layered perovskite compound Sr3Mn2O7 is studied from density-functional calculations using the linear muffin-tin orbitals method. An antiferromagnetic, insulating solution ...
Adsorption of zinc, cadmium and mercury ions from aqueous solutions on an activated carbon cloth
(Carbon, 2002)
The adsorption of zinc, cadmium and mercury ions from aqueous solutions on an activated carbon cloth was studied as a function of their concentrations and solution pH. For that purpose, pertinent adsorption isotherm data ...
Optical and structural characterization of laser-synthesized ultrafine Si-C-N powders
(Philosophical Magazine A: -Physics of Condensed Matter Structure Defects and Mechanical Properties, 2002)
Nanometric Si-C-N powders were obtained by CO2-laser- induced synthesis, starting from two different gas mixtures: SiH4-NH3-C2H4 or SiH4-NH3-C2H2. The variation in the initial gas mixture composition influences the local ...
Cylindrical hollow anode ion source
(Review of Scientific Instruments, 2002)
The hollow anode ion-electron source is based on the hollow anode discharge, a kind of plasma utilizing a cold cathode and a tiny bore or slot in the anode that simultaneously serves as exit aperture of the ion (or electron) ...
Charge stacking in the half-doped manganites
(Journal of Applied Physics, 2002)
The stability of the charge-stacked structure vis-a-vis the charge-alternate structure in the half-doped manganites is studied with a model that includes electronic kinetic energy, onsite and intersite Coulomb interactions, ...
Physical-chemic caracterisation of osteoporotic bone.
(Journal of Dental Research, 2002)