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

Naoki Shimomura, Satya Prakash Pati, Tomohiro Nozaki, Tatsuo Shibata, Masashi Sahashi

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number025212
JournalAIP Advances
Volume7
Issue number2
DOIs
Publication statusPublished - 2017 Feb 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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