Effect of pressure on magnetoelastic coupling in 3d metal alloys studied with x-ray absorption spectroscopy
Using x-ray absorption spectroscopy, we have studied the effect of pressure on femtometer-scale bond strain due to anisotropic magnetostriction in a thin FeCo film. At 7 GPa local magnetostrictive strain is found to be larger than at ambient, in agreement with spin-polarized ab initio electronic str...
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| Veröffentlicht in: | Physical review letters 2007-12, Vol.99 (23), p.237204-237204 |
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| container_end_page | 237204 |
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| container_issue | 23 |
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| container_title | Physical review letters |
| container_volume | 99 |
| creator | Pascarelli, S Ruffoni, M P Trapananti, A Mathon, O Aquilanti, G Ostanin, S Staunton, J B Pettifer, R F |
| description | Using x-ray absorption spectroscopy, we have studied the effect of pressure on femtometer-scale bond strain due to anisotropic magnetostriction in a thin FeCo film. At 7 GPa local magnetostrictive strain is found to be larger than at ambient, in agreement with spin-polarized ab initio electronic structure calculations, but contrary to the expected effect of compression on bond stiffness. The availability of high pressure data on local magnetostrictive strain opens new capabilities for validating theoretical predictions and can lead to the development of materials with the desired properties. |
| doi_str_mv | 10.1103/PhysRevLett.99.237204 |
| format | Article |
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At 7 GPa local magnetostrictive strain is found to be larger than at ambient, in agreement with spin-polarized ab initio electronic structure calculations, but contrary to the expected effect of compression on bond stiffness. The availability of high pressure data on local magnetostrictive strain opens new capabilities for validating theoretical predictions and can lead to the development of materials with the desired properties.</abstract><cop>United States</cop><pmid>18233406</pmid><doi>10.1103/PhysRevLett.99.237204</doi><tpages>1</tpages></addata></record> |
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| ispartof | Physical review letters, 2007-12, Vol.99 (23), p.237204-237204 |
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| source | American Physical Society Journals |
| subjects | ABSORPTION SPECTROSCOPY ANISOTROPY BINARY ALLOY SYSTEMS COBALT ALLOYS COMPRESSION ELECTRONIC STRUCTURE FLEXIBILITY IRON ALLOYS MAGNETOSTRICTION MATERIALS SCIENCE PRESSURE RANGE GIGA PA SPIN ORIENTATION STRAINS X-RAY SPECTROSCOPY |
| title | Effect of pressure on magnetoelastic coupling in 3d metal alloys studied with x-ray absorption spectroscopy |
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