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Electronic Structure of K2Bi8Se13
(2002)
K 2Bi8 Se13 belongs to a class of complex Bi-Te-Se systems which show great potential for thermoelectric performance. This compound forms in two distinct phases α-K 2Bi8 Se13 (triclinic with space group P-1) and β-K 2Bi8 ...
Synthesis and structural and spectroscopic characterization of a complex between Co(II) and imino-bis(methylphosphonic acid): Gaining insight into biologically relevant metal-ion phosphonate interactions or looking at a new Co(II)-organophosphonate material?
(2002)
Cobalt is an essential metal ion involved in key biomolecules, regulating processes in human physiology. As a metal ion, Co(II) assumes forms, which are dictated by the nature of organic binders in biological fluids, and ...
Impurity-induced antiferromagnetic order in the Haldane-gap compound (formula presented) (formula presented)
(2002)
An investigation of the effect of nonmagnetic Mg doping in the Haldane gap system (formula presented) is presented. Specifically, the magnetic properties of the quasi-one-dimensional compound (formula presented) (formula ...
Initial assessment of the thermoelectric properties for the mixed system K2-xRbxBi8Se13
(Affiliation: Dept. of Elec. and Comp. Engineering, Northwestern University, Evanston, IL 60208-3118, United StatesCorrespondence Address: Ireland, J.R.Dept. of Elec. and Comp. Engineering, Northwestern University, Evanston, IL 60208-3118, United States, 2002)
In previous studies we have investigated the thermoelectric properties of undoped and doped compositions of β-K2Bi8Se13. The attempt to substitute Rb for K resulted in a different structure type, but with potentially useful ...
Doping and alloying trends in new thermoelectric materials
(Affiliation: Dept. of Elec. and Comp. Engineering, Michigan State University, East Lansing, MI, United StatesCorrespondence Address: Loo, S.Dept. of Elec. and Comp. Engineering, Michigan State University, East Lansing, MI, United States, 2002)
New thermoelectric bulk materials such as CsBi4Te6 have shown superior properties to traditional materials, however, optimal performance requires continuing investigations of doping and alloying trends. A recently modified ...
Ideal physical element representation from reduced bond graphs
(2002)
Previous research has demonstrated that bond graphs are a natural and convenient representation to implement energy-based metrics that evaluate the relative 'value' of energy elements in a dynamic system model. Bond graphs ...
Coexistence of ferromagnetic and glassy behavior in semiconducting LaNi 0.2Co 0.8O 3
(2002)
Systematic dc and ac magnetic susceptibility studies have been performed on single-phase LaNi 0.2Co 0.8O 3 powder samples. Evidence of hysteresis loops supports the existence of ferromagnetic correlations that lead to a ...
Evaluating the microstructure and performance of nanocomposite PVD TiAlBN coatings
(2002)
Physical vapour deposition (PVD) TiAlBN coatings can exhibit excellent wear resistance, with optimised coating compositions demonstrating a 150% increase in lifetime compared to standard TiAlN coatings in wet-cutting drill ...
Electron spectroscopic studies of nanocomposite PVD TiAlBN coatings
(2002)
A range of TiAlBN coatings have been deposited by electron beam evaporation and the optimised composition exhibits a 150% improvement over single phase TiAlN coatings in drilling tests. The coatings have been analysed by ...
Low-temperature growth of NiMnSb thin films by pulsed-laser deposition
(2002)
We report the growth of thin films of the ferromagnetic half-Heusler alloy NiMnSb by pulsed-laser deposition on Si (111) and polycrystalline InAs substrates. Highly crystalline films are grown using low substrate temperatures ...