| Epitaxial Magnetic Films |
31 AUG 95 |
8 pages |
| Authors:
E. D. Dahlberg; MINNESOTA UNIV MINNEAPOLIS DEPT OF PHYSICS
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 | This research involved studies of the magnetic properties of multilayered magnetic films. Ultra high vacuum sputtering techniques were utilized to prepare the films. The physics of the Giant Magnetoresistance (GMR) and multilayer exchange coupling was investigated by precise measurements of the GMR in both anisotropic magnetioresistance (AMR) states. It was found that the AMR affected the GMR by altering the electron mean free path. A Boltzmann equation approach was found ... |
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| Thin Magnetic Films |
12 JUN 95 |
10 pages |
| Authors:
E. D. Dahlberg; MINNESOTA UNIV MINNEAPOLIS DEPT OF PHYSICS
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| This research involved studies of the magnetic properties of multilayered magnetic films and high quality thin films. Both ultra high vacuum sputtering and molecular beam epitaxy techniques were utilized to prepare the films. Both electrical transport and magneto-optic effects were use to measure the magnetic properties of the films and multilayers. The physics of the Giant Magnetoresistance (GMR) and multilayer exchange coupling was investigated by precise measurements of the GMR ... |
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| Proceedings of the Annual Conference on Magnetism and Magnetic Materials (37th) Held in Houston, Texas on 1-4 December 1993. Pages 5309-6146. Journal of Applied Physics. Volume 73. Number 10, Part 2 A |
15 MAY 93 |
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| Authors:
W. B. Yelon; E. D. Dahlberg; J. L. Nix; F. E. Pinkerton; R. H. Victora; AMERICAN INST OF PHYSICS NEW YORK
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| Proceedings of the Annual Conference on Magnetism and Magnetic Materials (37th) Held in Houston, Texas on 1-4 December 1993. Pages 5309-6146. Journal of Applied Physics. Volume 73. Number 10, Part 2 B |
15 MAY 93 |
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| Authors:
W. B. Yelon; E. D. Dahlberg; J. L. Nix; F. E. Pinkerton; R. H. Victora; AMERICAN INST OF PHYSICS NEW YORK
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| Epitaxial Iron Films |
15 FEB 92 |
13 pages |
| Authors:
E. D. Dahlberg; P. I. Cohen; MINNESOTA UNIV MINNEAPOLIS DEPT OF PHYSICS
|
| This research involved studies of the magnetic properties of multilayered magnetic films and high quality thin. Both ultra high vacuum sputtering and molecular beam epitaxy techniques were utilized to prepare the films. Both electrical transport and magneto-optic effects were use measure the magnetic properties of the films. The focus was determination of the temperature dependence of the magnetic anistropy energies of epitaxial iron films, the magnetization dynamics of thin films, ... |
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| Ultra High Vacuum Sputtering System |
25 JUL 91 |
8 pages |
| Authors:
E. D. Dahlberg; MINNESOTA UNIV MINNEAPOLIS
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| This grant provided for the purchase of an ultrahigh vacuum sputtering system for the preparation of high quality multilayered magnetic films and thin films. The system allows the preparation of continuous alloys with the use of three magnetron clusters and epitaxial multilayer films using ion beam sputtering. Initial tests of the quality of the films indicate that the films prepared in this system are comparable to those prepared by other ... |
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| Epitaxial Iron Films |
15 JAN 91 |
58 pages |
| Authors:
E. D. Dahlberg; P. I. Cohen; MINNESOTA UNIV MINNEAPOLIS
|
| This research involves studies of the magnetic properties of high quality thin and multilayered magnetic films. Both ultra high vacuum sputtering and molecular beam epitaxy techniques are utilized to prepare the films. Electrical transport is the primary probe to measure the magnetic properties of the films. Of special interest has been the determination of the temperature dependence of the magnetic anisotropy energies of epitaxial iron films and the transport properties ... |
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| Proceedings of the Annual Conference on Magnetism and Magnetic Materials (35th) Held in San Diego, California on 29 October-1 November 1990. Journal of Applied Physics. Volume 69. Number 8, Part 2 A |
91 |
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| Authors:
E. D. Dahlberg; P. E. George; D. T. Pierce; W. M. Saslow; W. B. Yelon; AMERICAN INST OF PHYSICS NEW YORK
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 | This volume contains papers and abstracts from sessions on the following topics: Particulate recording media; Magnetic ordering in superconducting copper oxides; Coupled layers; Magnetooptics; micromagnetics and hysteresis modeling; Ordering of intermetallic compounds; Magnetoresistance and Hall effect; Cooperative phenomenal--Kondo, mixed valence, heavy fermions; Thin film media--Systems and noise; Magnetooptic recording materials; Large magnetoresistance and coupled iron chromium layers; Actinide and other magnets; Applied superconductivity and magnetics; Strongly fluctuating spin systems; surface ... |
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| Proceedings of the Annual Conference on Magnetism and Magnetic Materials (35th) Held in San Diego, California on 29 October-1 November 1990. Journal of Applied Physics. Volume 69. Number 8, Part 2 B |
91 |
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| Authors:
E. D. Dahlberg; P. E. George; D. T. Pierce; W. M. Saslow; W. B. Yelon; AMERICAN INST OF PHYSICS NEW YORK
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| This volume contains papers and abstracts for sessions on the following topics: Soft materials; High T sub C yields superconductors and magnetism; Magnetic recording heads; Dynamics and self-organized criticality in magnetic materials; Amorphous materials; Kondo, mixed valence; Hard magnets; Soft materials for heads; Multilayers of cobalt with palladium/platinum and film growth; Magnetic ordering--Mostly rare earth compounds; Spin waves and nonlinear dynamics; Head disk interface and noval memory concepts; Magnetoelasticity; Critical ... |
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| Proceedings of the Joint Magnetism and Magnetic Materials-Intermag Conference (5th) Held in Pittsburgh, Pennsylvania on 18-21 June 1991 (Journal of Applied Physics. Volume 70, Number 10, Part 2) |
91 |
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| Authors:
E. D. Dahlberg; D. T. Pierce; W. B. Yelon; AMERICAN INST OF PHYSICS NEW YORK
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| Pittsburgh once again proved to be an inviting city for magneticians. 1,118 participants registered for the 5th Joint MMM Intermag Conference. The 762 contributions were organized into 506 talks and 256 poster exhibits which demonstrated that we have out grown the Pittsburgh Hilton To accommodate the large number of posters in the space available required three poster sessions on three of the days. Magnetic recording still appears to fuel the ... |
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| Epitaxial Iron Films |
15 SEP 89 |
22 pages |
| Authors:
E. D. Dahlberg; P. I. Cohen; MINNESOTA UNIV MINNEAPOLIS
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| The research program focused on the growth and the magnetic properties of epitaxial iron films grown on GaAs/InAs alloy substrates. Pseudomorphic growth of magnetic films on semiconductor substrates provides the potential for tuning of the magnetic properties of thin film magnets by varying the lattice constant and the morphology of the growth surface; this type of research has both device and fundamental research applications. Our studies of Fe films grown ... |
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| Epitaxial Iron Films |
31 JAN 88 |
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| Authors:
E. D. Dahlberg; P. I. Cohen; MINNESOTA UNIV MINNEAPOLIS
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| The growth properties and magnetic properties of iron films grown by molecular beam epitaxy were studied. The iron film growth was first studied by growing iron on iron whiskers. This work and previous work determined the growth parameters for nearly dislocation free growth. This information was then used to grow iron films on Gallium Arsenide/Indium Arsenide alloy substrates. As determined by electron diffraction, layer by layer growth was observed when ... |
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| Variable Temperature Superconducting Magnetometer/Susceptometer |
01 MAR 86 |
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| Authors:
E. D. Dahlberg; Eckard Muenck; Allen M. Goldman; Walter Weyhmann; MINNESOTA UNIV ST PAUL
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| A variable temperature superconducting susceptometer has been acquired for the measurement of magnetic moments and susceptibilities of small samples over a wide range of temperature and magnetic field. This instrument is equipped for measurement over the temperature range from 1.8K up to 400K, and in magnetic fields up to 6 Tesla. The system operates under full computer control of all of its parameters utilizing a software package which runs on ... |
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