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Magnetic Damping in...
Magnetic Damping in Polycrystalline Thin-Film Fe-V Alloys
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- Arora, Monika (författare)
- Quantum Electromagnetics Division, National Institute of Standards and Technology, Boulder, United States,NIST, Quantum Electromagnet Div, Boulder, CO 80305 USA
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- Delczeg-Czirjak, Erna K. (författare)
- Uppsala universitet,Materialteori
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- Riley, Grant (författare)
- Quantum Electromagnetics Division, National Institute of Standards and Technology, Boulder, United States; Center for Memory and Recording Research, University of California-San Diego, San diego, United States,NIST, Quantum Electromagnet Div, Boulder, CO 80305 USA; Univ Calif San Diego, Ctr Memory & Recording Res, La Jolla, CA 92093 USA
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- Silva, T. J. (författare)
- Quantum Electromagnetics Division, National Institute of Standards and Technology, Boulder, United States,NIST, Quantum Electromagnet Div, Boulder, CO 80305 USA
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- Nembach, Hans T. (författare)
- Quantum Electromagnetics Division, National Institute of Standards and Technology, Boulder, United States; Jila, University of Colorado, Boulder, United States,NIST, Quantum Electromagnet Div, Boulder, CO 80305 USA; Univ Colorado, JILA, Boulder, CO 80309 USA
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- Eriksson, Olle, 1960- (författare)
- Uppsala universitet,Örebro universitet,Institutionen för naturvetenskap och teknik,Department of Physics and Astronomy, University Uppsala, Uppsala, Sweden,Materialteori,Örebro Univ, Sch Sci & Technol, SE-70182 Örebro, Sweden
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- Shaw, Justin M. (författare)
- Quantum Electromagnetics Division, National Institute of Standards and Technology, Boulder, United States,NIST, Quantum Electromagnet Div, Boulder, CO 80305 USA
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(creator_code:org_t)
- American Physical Society, 2021
- 2021
- Engelska.
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Ingår i: Physical Review Applied. - : American Physical Society. - 2331-7019. ; 15:5
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- We report on the magnetic damping properties of polycrystalline Fe-V alloy thin films that are deposited at room temperature. By varying the concentration of V in the alloy, the saturation magnetization can be adjusted from that of Fe to near zero. We show that exceptionally low values of the damping parameter can be maintained over the majority of this range, with a minimum damping at approximately 15%-20% V concentration. Such a minimum is qualitatively reproduced with ab initio calculations of the damping parameter, although at a concentration closer to 10% V. The measured intrinsic damping has a minimum value of (1.53 +/- 0.08) x 10-3, which is approximately a factor of 3 higher than our calculated value of 0.48 x 10-3. From first-principles theory, we outline the factors that are mainly responsible for the trend of the damping parameter in these alloys. In particular, the band structure and resulting damping mechanism is shown to change at V concentrations greater than approximately 35% V content.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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