Properties of sputtered full Heusler alloy Cr2MnSb and its application in a magnetic tunnel junction

Sachin Gupta, F. Matsukura, H. Ohno

研究成果: Article査読

5 被引用数 (Scopus)

抄録

We deposit 30 nm thick Cr2MnSb films on a MgO(0 0 1) substrate by magnetron sputtering. X-ray diffraction reveals that the annealing promotes the crystallization of Cr2MnSb from amorphous at as-deposited state to partially crystallized phase, and that the crystallinity improves by raising the annealing temperature. The crystallized phase exhibits full B2 and partial L21 ordering after the annealing above 300 °C. The magnetic and magneto-transport properties reveal that the annealed Cr2MnSb shows magnetic ordering up to ∼350 K with small magnetic moment, 0.3µ B/formula unit for the sample annealed at 300 °C. We adopt Cr2MnSb as one of the electrodes in magnetic tunnel junctions (MTJs), and observe the switching of junction resistance, when the magnetization direction is reversed by sweeping an external magnetic field.

本文言語English
論文番号495002
ジャーナルJournal of Physics D: Applied Physics
52
49
DOI
出版ステータスPublished - 2019 9月 20

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 音響学および超音波学
  • 表面、皮膜および薄膜

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