[G] Magnetic Materials

1:30 PM - 1:45 PM JST(4:30 AM - 4:45 AM UTC)

[137] 11% TMR in Co–SrF₂ Nanogranular Films

○Cheng Wang¹, Nobukiyo Kobayashi², Hiroshi Masumoto¹ (1. Tohoku University, 2. Research Institute for Electromagnetic Materials)

Keywords:

Nanogranular films,Tunneling magnetoresistance,Spin-dependent tunneling transport,Superparamagnetism

Spin-dependent tunneling was investigated in Co–SrF₂ nanogranular films. An 11% TMR ratio was achieved, approaching the theoretical limit of 11.56% predicted from the 34% spin polarization of Co.