کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1571381 1514415 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three-dimensional characterization of near-field transducers by electron tomography
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Three-dimensional characterization of near-field transducers by electron tomography
چکیده انگلیسی

Transmission electron microscopy (TEM) was employed to study the structure of near-field transducers (NFT) for applications in heat-assisted magnetic recording (HAMR) heads. The overall shape of NFTs that had passed or failed an optical test was similar, as determined by scanning transmission electron microscopy tomography. However, the absence of a well-defined peg and the presence of a flat top on the ‘FAIL’ NFT disk induced poor thermal heat transfer from the NFT to the phase change medium and resulted in the optical test failure. The thermal heating around the NFT led to Ta diffusion from the adjacent tantala core and to the presence of Ta-rich particles in the alumina matrix in the plane of the NFT.


► Very site specific TEM specimen prepared by dual-beam SEM/FIB system.
► Near field transducer characterization by STEM tomography.
► Elemental analysis in 2D by STEM-EDX.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Characterization - Volume 72, October 2012, Pages 104–110
نویسندگان
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