Jian-Gang Zhu

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FePt– MgO two phase thin films have been obtained by an alternating sputtering method at elevated temperatures. It is found that the L1 0 FePt grains grow in a columnar manner through the thickness of the film and possess a ͑001͒ perpendicular texture promoted by the ͑200͒-textured crystalline MgO underlayer. The amorphous MgO in the two phase mixture forms(More)
  • Research Showcase, Cmu, Hoan Ho, David E Laughlin, Jian-Gang Zhu
  • 2015
A technique based on x-ray diffraction (XRD) is introduced to understand the variation of the grain-to-grain ordering in FePt recording media. We classify the possible ways that the grains may be ordered into three types: homogeneous ordering, inhomogeneous ordering, and bipolar ordering. We study the possible impact of each type of ordering on the XRD(More)
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