学術雑誌論文

学術雑誌論文

text

Journal of Applied Physics. 2009, 106(3), p. 033903

Magnetic coupling at interface of ultrathin Co film and antiferromagnetic Cr₂O₃ (0001) film

American Institute of Physics

英語

text

2009-08-04

https://doi.org/10.1063/1.3182802

Yu Shiratsuchia, Toshihiro Nakatani, Shin-ichi Kawahara, and Ryoichi Nakatani, Journal of Applied Physics 106, 033903 (2009); https://doi.org/10.1063/1.3182802.

The magnetic coupling at the interface of Co and Cr has been investigated using ultrathin Co film on Cr₂O₃ (0001) film, which is expected to be a promising system to show the magnetoelectronic effect. We mainly examined the temperature dependence of magnetization, the exchange bias at different field directions relative to the Cr spin direction, and the temperature dependence of exchange bias. The temperature dependence of magnetization under 50 Oe indicates the collinear coupling of Co spin and Cr spin at the interface. Furthermore, the exchange bias effect is observed in the coupled direction of Co and Cr, namely, parallel to the Cr spin direction. However, the changes in the magnetic behavior with changing field directions and Co thicknesses imply the existence of biquadratic coupling of Co spin and Cr spin, as well. In agreement with the numerical calculation under the coexistence of collinear and biquadratic couplings, the exchange bias field decreases nonmonotonically with increasing temperature.

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Yu Shiratsuchia, Toshihiro Nakatani, Shin-ichi Kawahara, and Ryoichi Nakatani, Journal of Applied Physics 106, 033903 (2009) and may be found at https://doi.org/10.1063/1.3182802.

89982

Magnetic coupling at interface of ultrathin Co film and antiferromagnetic Cr₂O₃ (0001) film

American Institute of Physics

英語

2009-08-04

Journal of Applied Physics

106

3

033903

https://doi.org/10.1063/1.3182802

https://hdl.handle.net/11094/89982