Enhancing the blocking temperature of perpendicular-exchange biased Cr2O3 thin films using buffer layers | Zendy

Naoki Shimomura | Zendy; Satya Prakash Pati | Zendy; Tomohiro Nozaki | Zendy; Tatsuo Shibata | Zendy; M. Sahashi | Zendy

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Enhancing the blocking temperature of perpendicular-exchange biased Cr2O3 thin films using buffer layers

Author(s) -

Naoki Shimomura,

Satya Prakash Pati,

Tomohiro Nozaki,

Tatsuo Shibata,

M. Sahashi

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4977714

Subject(s) - materials science , thin film , buffer (optical fiber) , magnetocrystalline anisotropy , exchange bias , condensed matter physics , lattice (music) , perpendicular , magnetization , analytical chemistry (journal) , magnetic anisotropy , chemistry , nanotechnology , quantum mechanics , magnetic field , acoustics , telecommunications , physics , geometry , mathematics , chromatography , computer science

In this study, we investigated the effect of buffer layers on the blocking temperature (TB) of perpendicular exchange bias of thin Cr2O3/Co exchange coupled films with a Ru spacer and revealed a high TB of 260 K for 20-nm-thick Cr2O3 thin films. By comparing the TB values of the 20-nm-thick Cr2O3 films on Pt and α-Fe2O3 buffers, we investigated the lattice strain effect on the TB. We show that higher TB values can be obtained using an α-Fe2O3 buffer, which is likely because of the lattice strain-induced increase in Cr2O3 magnetocrystalline anisotropy

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