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Ladwig, Peter F.; Olson, Jesse D.; Bunton, Joseph H.; Larson, David J.; Ulfig, Robert M.; Martens, Richard L.; Gribb, Tye T.; Kelly, Thomas F.; Bonsager, Martin C.; Schultz, Allan E.; Pant, Bharat B.; Chang, Y. Austin |
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Intermixing and phase separation at the atomic scale in Co-rich (Co,Fe) and Cu multilayered nanostructures |
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2005 |
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Applied Physics Letters |
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Appl. Phys. Lett. |
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87 |
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121912:1-3 |
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LEAP |
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Despite the fact that Co-rich (Co,Fe) alloys and Cu are immiscible materials in bulk form, evidence of thermally induced mixing at the atomic scale has been observed in thin-film multilayers of (Co,Fe) and Cu. However, long term anneals at lower temperatures produced a breakup of the multilayers into a two-phase mixture of (Co,Fe) and Cu particles. The observations were made with the use of the three-dimensional atom probe technique, with supporting evidence from differential scanning calorimetry and x-ray diffraction. Besides their scientific importance, these results are of interest where these (Co,Fe) and Cu thin films are used to produce the giant magnetoresistive effect. |
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NU @ karnesky @ |
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420 |
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