Investigation of magnetization reversal process in pinned CoFeB thin film by <italic>in-situ</italic> Lorentz TEM

Investigation of magnetization reversal process in pinned CoFeB thin film by in-situ Lorentz TEM

Pei Ke^{1, 2, 3}, Xia Wei-Xing^{2, 3, †}, Wang Bao-Min^{2, 3}, Wen Xing-Cheng^{2, 3}, Sheng Ping^{2, 3}, Liu Jia-Ping^{2, 3, 4}, Liu Xin-Cai^{1, ‡}, Li Run-Wei^{2, 3}

(color online) In-situ LTEM results of sample C, showing (a) low-magnified bright field image and SADP (inset), ((b)–(h)) domain reversal process with magnetic field decreasing from 0 Oe to −300 Oe, which correspond to points b–h on the loop of sample C in Fig. 1, respectively, (i) distribution mapping of pinning force in the sample, and ((j) and (k)) SADPs of areas A and C in panel (i), respectively. Scale bars in panels (b)–(i) are all the same.