Picosecond time-resolved X-ray ferromagnetic resonance measurements at Shanghai synchrotron radiation facility  

作　　者：Xia Yang Jie-Feng Cao Jun-Qin Li Fang-Yuan Zhu Rui Yu Jian He Zi-Long Zhao Yong Wang Ren-Zhong Tai 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China

出　　处：《Nuclear Science and Techniques》2022年第5期126-134,共9页核技术（英文）

基　　金：supported by the Nation Key R&D Program of China(No.2021YFA1601003 and 2017YFA0403400);the National Natural Science Foundation of China(Nos.11875314,52032005,and11805260);the National Basic Research Program of the Ministry of Industry and Information Technology,China(No.2016YFB0700402);conducted on 07U and 08U1A soft X-ray beamlines at the SSRF。

摘　　要：An experimental picosecond time-resolved X-ray ferromagnetic resonance(TR-XFMR)apparatus with a time resolution of 13 ps(RMS)or 31 ps(FWHM)was constructed and demonstrated in the 07U and 08U1A soft X-ray beamlines at the Shanghai Synchrotron Radiation Facility(SSRF)using pump-probe detection and X-ray magnetic circular dichroism(XMCD)spectroscopy.Element and time-resolved ferromagnetic resonance was excited by continuous microwave phase-locking of the bunch clock within the photon beam during synchrotron radiation and was characterized by detecting the magnetic circular dichroism signals of the elements of interest in the magnetic films.Using this equipment,we measured the amplitude of the element-specific moment precession during ferromagnetic resonance(FMR)at 2 GHz in a single Ni81Fe19layer.

关 键 词：Ferromagnetic resonance Time resolution PUMP-PROBE Synchrotron radiation 

分 类 号：O469[理学—凝聚态物理] O482.532[理学—电子物理学]