14:30 〜 14:45 ▲ [20p-B101-2] Evaluation of spin-transfer-torque efficiency of FeCr with negative spin polarization using magnetization reversal against a magnetic field 〇Hirofumi Suto1、Nakatani Tomoya1、Asam Nagarjuna1、Iwasaki Hitoshi1、Sakuraba Yuya1 (1.NIMS)