1. Non-Joulian magnetostriction
2. [5] The authors thank Dr. Y. A. Ono of RIKEN for his valuable discussion, Prof. H. Numakura of Osaka Prefecture University for providing us Fe0.88Ga0.12 alloys, Ms. K. Shimada of RIKEN for preparing thin specimens, and Mr. A. Kawaguchi, Dr. A. Kotani, Mr. Y. Fujibayashi, Mr. K. Uchihashi of Osaka Prefecture University for their technical supports. This work was supported by KAKENHI, Grant-in-Aid for Scientific Research ((B) 18H03475 and 20K20555).
3. [3] https://www.nasa.gov/centers/armstrong/features/supersonic-shockwave-interaction.html
4. Hollow-cone Foucault imaging method
5. Hollow-Cone Foucault Imaging Method for Magnetic Structure Observations