| Correlations Between Micromagnetic, Microstructural and Microchemical Properties in Ultrathin Epitaxial Magnetic Structures. Magnetic Microstructure Observed With Electron Holography in STEM |
10 JUN 1998 |
138 pages |
| Authors:
M. R. Scheinfein; G. G. Hembree; ARIZONA STATE UNIV TEMPE DEPT OF PHYSICS
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 | Partial contents: Summary of Selected Research Topics Years 4-6; Room-Temperature Dipole- Ferromagnetism In Linear-Self- Assembling Mesoscopic Fe Particle Arrays; Growth of Self-Organized Mesoscopic Magnetic Structures; Magnetic Coupling In Self-Organized Narrow-Spaced Fe Nanowire Arrays; Quantitative Magnetometry Using Electron Holography: Fields Near Magnetic Force Microscope Tips; Magnetic Nanostructures Produced By Electron Beam Patterning Of Direct Write Transition Metal Fluoride Resists; Defect Induced Lowering Of Activation Energies At Step Bands In Co/Cu(100); Co ... |
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| Self-Organized Mesoscopic Magnetic Structures |
26 AUG 97 |
33 pages |
| Authors:
Akiraa Sugawara; G. G. Hembree; M. R. Scheinfein; ARIZONA STATE UNIV TEMPE DEPT OF PHYSICS
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| Three types of mesoscopic magnetic micro structure have been formed using self- organization: linear arrays of nanometer diameter islands, nanometer width lines, and undulating, continuous films. These structures were produced by annealing NaCl (11O) and (111) surfaces in situ to produce patterned templates with 10-100 nm periodicity. Growth parameters such as groove spacing, substrate temperature and total deposit thickness can be varied in order to define specific mesoscopic magnetic structures. ... |
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| Correlations Between Micromagnetic, Microstructural and Microchemical Properties in Ultrathin Epitaxial Magnetic Structures |
31 DEC 94 |
109 pages |
| Authors:
Michael R. Scheinfein; G. G. Hembree; ARIZONA STATE UNIV TEMPE
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| The proposed goal of this project is to obtain quantitative measurements of the microstructural, microchemical and micromagnetic properties of surfaces and interfaces of ultrathin films composed of magnetic materials deposited on non-magnetic, antiferromagnetic (metal) and insulating substrates. Surface microanalytic methods based on a unique ultrahigh-vacuum scanning transmission electron microscope/scanning electron microscope (UHV-STEM/SEM) equipped with in-situ thin film preparation and characterization tools are being used. Magnetic characterization is performed in-situ using ... |
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| Correlations Between Micromagnetic, Microstructural and Microchemical Properties in Ultrathin Epitaxial Magnetic Structures |
31 DEC 93 |
132 pages |
| Authors:
M. R. Scheinfein; J. S. Drucker; G. G. Hembree; ARIZONA STATE UNIV TEMPE DEPT OF PHYSICS
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| The proposed goal of this project is to obtain quantitative measurements of the microstructural, microchemical and micromagnetic properties of surfaces and interfaces of ultrathin films composed of magnetic materials deposited on non-magnetic, antiferromagnetic (metal) and insulating substrates. Surface microanalytic methods based on unique ultrahigh-vacuum scanning transmission electron microscope/scanning electron microscope (UHV-STEM/SEM) equipped with in-situ thin film preparation and characterization tools are being used. Magnetic characterization is performed in-situ using the ... |
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| A Reliable Calibration Method for an Ion Current Controlled Electron Beam Transition Metal Deposition Source |
93 |
17 pages |
| Authors:
E. T. Bullock; S. T. Coyle; G. G. Hembree; M. R. Scheinfein; ARIZONA STATE UNIV TEMPE DEPT OF PHYSICS
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| An alternative ion current controlled calibration scheme has been implemented for electron beam transition metal (Co) deposition sources. A repeatable and practical means of positioning the source (tip), measuring the ion flux and determining the flux rate is given. Intrinsic variations in the structural parameters and thermal effects which can modify the growth rate are examined and compensated for. A stable regime where ion beam current is directly proportional (+/- ... |
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| Sem Imaging of Crystal Surfaces using Diffracted Beams, |
1976 |
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| Authors:
J. D. Landry; G. G. Hembree; P. E. Hojlund Nielsen; J. M. Cowley; ARIZONA STATE UNIV TEMPE DEPT OF PHYSICS
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 | Additional information regarding the structure of the surfaces of crystals may be obtained by the use of diffracted beams to form SEM images. Variations of diffracted beam intensities are produced both by surface topography and also by variations in the orientation or composition of the crystal. Image intensities are therefore sensitive indicators of chemical reactions, impurities, crystal imperfections or crystal distortion. A medium energy diffraction-SEM system with an ultra-high vacuum ... |
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