@article{06be737cc3a9418ba0008d48c5dba0c2,
title = "Optical control of magnetization dynamics in Gd-Fe-Co films with different compositions",
abstract = "Perpendicularly magnetized ferrimagnetic Gd-Fe-Co thin films with different compositions and multilayer arrangements were subjected to femtosecond laser pulses. The pulses triggered different magnetization dynamics in the various thin films. In the Gd26Fe66Co8 film, which has an angular-momentum-compensation temperature (TA) well above ambient temperature (Texp), monotonic magnetization reversal occurred, whereas the Gd22Fe70Co8 film (where TA is well below Texp) exhibited remarkable wavelike spin modulation with spatial inhomogeneity during relaxation of the laser-induced nonequilibrium state. These findings can enable broad-range tuning of the magneto-optical responses of Gd-Fe-Co alloys, facilitating advances in materials engineering.",
author = "Takuo Ohkochi and Hidenori Fujiwara and Masato Kotsugi and Hirokazu Takahashi and Roman Adam and Akira Sekiyama and Tetsuya Nakamura and Arata Tsukamoto and Schneider, {Claus M.} and Hiroto Kuroda and Arguelles, {Elvis F.} and Mamoru Sakaue and Hideaki Kasai and Masakiyo Tsunoda and Shigemasa Suga and Toyohiko Kinoshita",
note = "Funding Information: Acknowledgment We thank Drs. C. Mitsumata, A. Yamaguchi, and T. Satoh for fruitful discussions and Mr. T. Yagi for the analysis of the magnetic domains. The experiments at the BL25SU beamline at SPring-8 were performed with the approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal Nos. 2011B1302, 2012A1232, 2012B1200, 2013A1482, 2013B1304, and 2014B1736). This work was partially supported by a Grant-in-Aid for Scientific Research (S, 18101004) and Grants-in-Aid for Young Scientists (B, 26790076 and A, 17H04920) from the Japan Society for the Promotion of Science, Projects for Innovative Quantum Functional Materials (PIQFUM), of the Ministry of Education Culture, Sports, Science and Technology (MEXT), and the Photon and Quantum Basic Research Coordinated Development Program of MEXT. Publisher Copyright: {\textcopyright} 2017 The Japan Society of Applied Physics.",
year = "2017",
month = oct,
doi = "10.7567/APEX.10.103002",
language = "English",
volume = "10",
journal = "Applied Physics Express",
issn = "1882-0778",
publisher = "Japan Society of Applied Physics",
number = "10",
}