Browsing Physics by Title
Now showing items 118 of 18

Calculation of quantum entanglement using a genetic algorithm
(200705)Quantum entanglement is a multifaceted property that has attracted much attention, since it is used as the basis for such applications as quantum cryptography, quantum teleportation, and quantum computing. The calculation ... 
Effective medium theory and Rosseland mean opacity
(200512)As a gas cools the mean opacity becomes dominated by the opacity of molecules and at low temperatures solid dust grains. Accurately computing the opacity is necessary to accurately compute the transfer of radiation through ... 
Low temperature heat capacities of Ti3Al1.1C1.8, Ti4AlN3, and Ti3SiC2
(IEEE, 19991001)For the binary Ti Al system, an ordering transformation in Ti3Al has been shown to result in a significant lowering of the electronic heatcapacity coefficient, ?, by removing electrons from conducting states. When ? is ... 
Low temperature heat capacity of Ti3SiC2
(IEEE, 19990601)Calorimetric measurements between 2 and 10 K have been made on Ti3SiC2. The molar heat capacity, c, data can be fitted to the sum of an electronic and a lattice contribution: c=?T+ßT3. The ß value of 0.049 mJ/mol?K4 yields ... 
Lowtemperature heat capacities of Ni3Al
(IEEE, 19860201)Heat capacities of two singlecrystal Ni3Al samples have been measured between 2 and 14 K. The data can be well fitted to the sum of a lattice and an electronic term, without a magnetic cluster contribution as previously ... 
Lowtemperature heat capacities of silicon carbide
(IEEE, 19870101)Temperature dependence of heat capacity data between 4 and 12 K can be represented by a single term, ßT3, associated with lattice vibrations. The coefficient ß corresponds to a large Debye temperature of 990 K consistent ... 
Magnetic properties of NiCoCrbase Elgiloy
(Springer, 19990901)The NiCoCrbase Elgiloy is one of the commonly used engineering materials. Most applications rely on its high strength, ductility, corrosion resistance and excellent fatigue life over a wide temperature range. However, ... 
Magnetic properties of partiallyinverted zinc ferrite aerogel powders
(IEEE, 19970201)Fine powders of ZnFe2O4 with an average particle size of 10 nm and inversion parameter of 0.21 were synthesized by the aerogel procedure. Portions of the powders were calcined in air at 500 and 800?°C and other portions ... 
Magnetic properties of Zn Mg ferrite fine powders (abstract)
(IEEE, 19960401)Several fine powder samples of ZnxMg1xFe2O4, 0=x=1, were prepared by the supercritical solgel (aerogel) process, and were annealed at 500?°C for 2 h. The structure, crystallite size and inversion parameter were determined ... 
Magnetic susceptibility analysis of conducting polymers
(Wichita State University. Graduate School., 20050422) 
The magnetic vector potential, KleinGordon equation and Klein’s paradox in relativistic quantum mechanics
(200705)This thesis evaluates solutions to the KleinGordon equation with scalar and vector potentials in the Symmetric and Landau gauges. The solution for the KleinGordon equation in the Symmetric gauge does reproduce elements ... 
Mossbauer characterization of nonequilibrium zinc ferrites
(IEEE, 19970401) 
Mössbauer evaluation of cobalt ferrite nanoparticles synthesized by forced hydrolysis
(IEEE, 20050301)Spinel cobalt ferrite in the form of nearly spherical particles, having a narrow range of particle size around 7.6 nm, was produced by forced hydrolysis. Between the magnetization blocking temperature of 180 K and the ... 
Mössbauer spectrometry study of magnesioferrite particles
(IEEE, 19940701)Fine particles of ferrimagnetic MgFe2O4 were synthesized through a solgel supercritical drying procedure, then coldpressed and heated at 500 and 800?°C. These materials were characterized by Mössbauer spectrometry in the ... 
Mössbauer studies of meltspun Pr2Fe14B ribbons
(IEEE, 20010801)Meltspun ribbons of tetragonal Pr2Fe14B exhibit favorable hard magnet characteristics. Technically relevant materials based on this compound, however, generally contain a certain amount of soft magnetic aFe or Fe3xBx ... 
Structure and magnetic properties of sputtered thin films of Fe0.79Ge0.21
(IEEE, 19931001)Films of Fe0.79Ge0.21 with thicknesses of 300 nm were synthesized by ion beam sputtering, and were annealed at temperatures from 200 to 550°C. The materials were characterized by xray diffractometry, Mössbauer spectrometry, ... 
Temperature dependent lattice distortion in aerogelproduced Fe Mo oxides
(IEEE, 20080601)Mössbauer studies have been made to evaluate the temperature dependence of lattice distortion in two aerogelsynthesized ironmolybdenum oxides having different atomic ratios Fe:Mo=1:1 and 2:3, but both with a ßFeMoO4 ... 
Uniformity of limits in the calculation of the magnetization of the Heisenberg linear chain
(IEEE, 19710301)By making use of the Bogliubov inequality, a formula is derived which gives an upper limit to the magnetization of a linear chain of arbitrary length and which is subject to the Heisenberg Hamiltonian. It is found that the ...