抄録
This study proposes a method to separate the geometric phase shift due to lattice strain from the undesired phase information, resulting from magnetic fields that are superposed in the dark-field electron holography (DFEH) observations. Choosing a distinct wave vector for the Bragg reflection reversed the sense of the geometric phase shift, while the sense of the magnetic information remained unchanged. In the case of an Nd-Fe-B permanent magnet, once the unwanted signal was removed by data processing, the residual phase image revealed a strain map. Even though the applications of DFEH have thus far been limited to non-magnetic systems, the method proposed in this work is also applicable to strain measurements in various ferromagnetic systems.
本文言語 | 英語 |
---|---|
論文番号 | 193102 |
ジャーナル | Applied Physics Letters |
巻 | 109 |
号 | 19 |
DOI | |
出版ステータス | 出版済み - 11月 7 2016 |
!!!All Science Journal Classification (ASJC) codes
- 物理学および天文学(その他)