Induced perpendicular magnetization in a Cu layer inserted between Co and Pt layers revealed by x-ray magnetic circular dichroism

Jun Okabayashi, Tomohiro Koyama, Motohiro Suzuki, Masahito Tsujikawa, Masafumi Shirai, Daichi Chiba

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

We used x-ray absorption spectroscopy and x-ray magnetic circular dichroism to investigate the effects of inserting Cu into Co/Pt interfaces, and found that a 0.4-nm-thick inserted Cu layer showed perpendicularly magnetized properties induced by the proximity effect through the Co and Pt layers. The dependence of the magnetic properties on the thickness of the Cu layers showed that the proximity effects between Co and Pt with perpendicular magnetic anisotropy can be prevented by the insertion of a Cu layer with a nominal threshold thickness of 0.7 nm. Element-specific magnetization curves were also obtained, demonstrating that the out-of-plane magnetization is induced in the Cu layers of the Co/Cu/Pt structures.

Original languageEnglish
Article number46132
JournalScientific reports
Volume7
DOIs
Publication statusPublished - 2017 Apr 13

ASJC Scopus subject areas

  • General

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