Quantitative Measurements of Segregation In Co-Cr-X Magnetic Recording Media by Energy-Filtered Transmission Electron Microscopy
Keyword(s):
AbstractReliable core-loss spectroscopic methods have been developed for mapping elemental segregation in Co-Cr-X magnetic recording media by energy-filtered transmission electron microscopy. Extraction of quantitative compositions at a spatial resolution approaching 1 nm involves sophisticated treatments for diffraction contrast, variations in specimen thickness, and closely-spaced oxygen K and chromium L23 ionization edges. These methods reveal that intergranular chromium levels are ∼25 at.% for random-angle boundaries and ∼15 at.% for 90° boundaries in films of Co84Cr12Ta4 d.c. magnetron sputtered at 250°C.
1980 ◽
Vol 38
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pp. 406-407
1999 ◽
Vol 5
(S2)
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pp. 634-635
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1991 ◽
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pp. 542-543
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1977 ◽
Vol 35
(1)
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pp. 159-176
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2001 ◽
Vol 203
(1)
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pp. 47-56
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