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First Direct Measurement Of The Energy Spectra Of Individual Auger Cascade Steps In Solid MnO, Ag And Pd
(Physics, 2007-09-17)
We present the first direct measurements of energy spectra of electrons emitted in the later steps of the Auger cascade processes in solids. Measurements were carried out for the L-->MV-->VVV and L-->MM-->MVV-->VVVV Auger ...
Study Of Oxide Surfaces Using Time Of Flight Positron Annihilation Induced Auger Electron Spectroscopy
(Physics, 2007-08-23)
Transition metal oxides (TMOs) exhibit a rich collection of interesting and intriguing properties which can be used for wide variety of applications. In this dissertation, I will discuss the first PAES measurements on ...
Electron Emission From Surfaces Resulting From Low Energy Positron Bombardment
(Physics, 2009-09-16)
Measurements of the secondary electron energy spectra resulting from very low energy positron bombardment of a polycrystalline Au and Cu (100) surfaces are presented that provide evidence for a single step transition from ...
Simulations Of High-latitude Ionosphere-magnetosphere region plasma density structures and the Alfvén waves effects
(Physics, 2009-09-16)
O+ density structures in the polar cap ionosphere-magnetosphere region near 6000 km altitude have been observed with numerous spacecraft, with O+ densities ranging from above 10 cm-3 to lower than 0.01 cm-3. Regions with ...
Holographic Patterning Of Polymer Dispersed Liquid Crystal Materials For Diffractive Optical Elements
(Physics, 2007-08-23)
Liquid crystals are a soft condensed matter phase that share properties with both isotropic liquids and crystalline solids. Composite materials formed from both low molecular weight liquid crystals and polymers are of both ...
Ferrimagnetism And Magnetic Entropy Change For TM/RE Multilayers
(Physics, 2009-09-16)
Multilayers of Co/Tb, Ni/Gd, NiFe/Gd, CoFe/Gd and CoNi/Gd multilayers have been synthesized using dc magnetron sputtering and have been investigated experimentally by SQUID magnetometry. Due to the antiferromagnetic coupling ...
Transformation of electrical transport from variable range hopping to hard gap resistance in Zn[subscript]1−[subscript]xFe[subscript]xO[subscript]1[subscript]v magnetic semiconductor films
(American Institute of Physics, 2006-11-16)
Transformation of the electrical transport from the Efros and Shklovskii [J. Phys. C 8, L49 (1975)] variable range hopping to the “hard gap” resistance was experimentally observed in a low temperature range as the Fe ...
Observation of L1[subscript]0-like chemical ordering in a decahedral FePt nanoparticle by C[subscript]s-corrected high resolution transmission electron microscopy
(American Institute of Physics, 2009-03-09)
The state of the chemical ordering in a decahedral FePt nanoparticle was studied using aberration corrected high resolution transmission electron microscopy. With the reduced image delocalization effect as a result of ...
Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering
(American Institute of Physics, 2007-04-27)
FePt/Fe3Pt bulk nanocomposite magnets have been prepared by the spark plasma sintering of chemically synthesized FePt and Fe3O4 nanoparticles under 100 MPa at 400–600 °C. It was found that the phase transition of the FePt ...
Effect of thermal fluctuations on the recoil loops of SmCo5[subscript]/Fe nanocomposite system
(American Institute of Physics, 2009-02-13)
The correlation between the recoil loop openness and the activation volume has been studied for the SmCo5/α-Fe nanocomposite powder material prepared by mechanical alloying. The α-Fe phase content in the nanocomposite ...