Alloying effect of Cr-based seed layer on control of sheet texture of MgO and thermal conductivity

Hidetaka Yakabe, Shintaro Hinata, Shin Saito, Migaku Takahashi

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2 Citations (Scopus)

Abstract

Orientation of MgO underlayer deposited on various Cr80M 20 (M: Cr, Ti, Mn, Mo, W) seed layers and grain diameter (GD) and thermal conductivity K of the Cr80M20 seed layer were investigated for the thermally assisted magnetic recording. Moreover, stacking structure for reducing the orientation of the MgO underlayer and controlling the K of the seed layer was discussed through the results. GD of the Cr 80M20 film was varied from 8.7 (M: Ti) to 10.7nm (M: Mn) and distribution of the MgO (002) orientation deposited on the Cr 80M20 seed layer was varied from 10 (M: Ti) to 4.8°(M: Mn) by changing additional material. And the thermal conductivity of the Cr80M20 film was varied from 10.5 (M: Mn) to 29.1 (Mo) W/mK. These results indicate that K of the Cr80M20 seed layer can be varied throughout a range of approximately 10 to 29W/mK while suppressing full width half maximum for MgO (002) orientations, by using a laminar structure of seed layer consists of K-controlled CrM layer/large-GD CrMn layer.

Original languageEnglish
Article number17B743
JournalJournal of Applied Physics
Volume115
Issue number17
DOIs
Publication statusPublished - 2014 May 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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