Role of nanoscale precipitates on the enhanced magnetostriction of heat-treated galfenol (Fe1-xGax) alloys
We report neutron diffuse scattering measurements on highly magnetostrictive Fe1-xGax alloys (0.14
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Veröffentlicht in: | Physical review letters 2009-03, Vol.102 (12), p.127201-127201, Article 127201 |
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creator | Cao, H Gehring, P M Devreugd, C P Rodriguez-Rivera, J A Li, J Viehland, D |
description | We report neutron diffuse scattering measurements on highly magnetostrictive Fe1-xGax alloys (0.14 |
doi_str_mv | 10.1103/physrevlett.102.127201 |
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This diffuse scattering scales with magnetostriction and exhibits asymmetric peaks at the (100) and (300) reciprocal lattice positions that are consistent with the coexistence of short-range ordered, coherent nanometer-scale precipitates embedded in a long-range ordered, body-centered cubic matrix. A large peak splitting is observed at (300) for x=0.19, which indicates that the nanoprecipitates are not cubic and have a large elastic strain. 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This diffuse scattering scales with magnetostriction and exhibits asymmetric peaks at the (100) and (300) reciprocal lattice positions that are consistent with the coexistence of short-range ordered, coherent nanometer-scale precipitates embedded in a long-range ordered, body-centered cubic matrix. A large peak splitting is observed at (300) for x=0.19, which indicates that the nanoprecipitates are not cubic and have a large elastic strain. 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This diffuse scattering scales with magnetostriction and exhibits asymmetric peaks at the (100) and (300) reciprocal lattice positions that are consistent with the coexistence of short-range ordered, coherent nanometer-scale precipitates embedded in a long-range ordered, body-centered cubic matrix. A large peak splitting is observed at (300) for x=0.19, which indicates that the nanoprecipitates are not cubic and have a large elastic strain. This implies a structural origin for the enhanced magnetostriction.</abstract><cop>United States</cop><pmid>19392316</pmid><doi>10.1103/physrevlett.102.127201</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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title | Role of nanoscale precipitates on the enhanced magnetostriction of heat-treated galfenol (Fe1-xGax) alloys |
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