Soft X-Ray Magneto-optical Faraday Effect around Ni M2,3 Edges
CHEN Kai1, CUI Ming-Qi1, YAN Fen1, ZHAO Jia2, SUN Li-Juan1, ZHENG Lei1, MA Chen-Yan1, XI Shi-Bo1, ZHAO Yi-Dong1
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 1000492Department of Mathematics and Physics, Beijing Technology and Business University, Beijing 100037
Soft X-Ray Magneto-optical Faraday Effect around Ni M2,3 Edges
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 1000492Department of Mathematics and Physics, Beijing Technology and Business University, Beijing 100037
摘要We present magneto-optical (MO) Faraday spectra measured around the M2,3 edges (60--70eV) of Ni films at the Beijing Synchrotron Radiation Facility (BSRF). A polarization analysis of the final state of the transmitted radiation from the Ni film is employed to determine the Faraday rotation at the edges. The MO effect becomes resonantly enhanced at the M2,3 edges, and accordingly large values for the rotation angle β of 1.85±0.19°for this ferromagnetic Ni film with thickness of 31nm are measured. Without the magnetic field, the azimuthal angles do not shift; with parallel and antiparallel magnetic field the rotation angles shift in the opposite way and they are symmetrical. The uncertainty of Faraday rotation angles mainly comes from the data fitting and the state change of the beamline when the angles are measured.
Abstract：We present magneto-optical (MO) Faraday spectra measured around the M2,3 edges (60--70eV) of Ni films at the Beijing Synchrotron Radiation Facility (BSRF). A polarization analysis of the final state of the transmitted radiation from the Ni film is employed to determine the Faraday rotation at the edges. The MO effect becomes resonantly enhanced at the M2,3 edges, and accordingly large values for the rotation angle β of 1.85±0.19°for this ferromagnetic Ni film with thickness of 31nm are measured. Without the magnetic field, the azimuthal angles do not shift; with parallel and antiparallel magnetic field the rotation angles shift in the opposite way and they are symmetrical. The uncertainty of Faraday rotation angles mainly comes from the data fitting and the state change of the beamline when the angles are measured.
[1] Chen C T, Idzerda Y U, Lin H J, Smith N V, Meigs G, ChabanE, Ho G H, Pellegrin E and Sette F 1995 Phys. Rev. Lett. 75 152 [2] Kortright J B, Awschalom D D, Stohr J, Bader S D,Idzerda Y U, Parkin S P, Schuller I K and Siegmann H C 1999 J.Magn. Magn. Mater. 207 7 [3] Mertins H C, Schafers F, Cann X L, Gaupp A and Gudat W2000 Phys. Rev. B 61 874 [4] Mertins H C, Valencia S, Abramsohn D, Gaupp A, Gudat W andOppeneer P M 2004 Phys. Rev. B 69 064407 [5] Valencia S, Gaupp A, Gudat W, Mertins H C, Oppeneer P M,Abramsohn D, and Schneider C M 2006 New J. Phys. 8 254 [6] Hatano T, Hu W, Saito K and Watanabe M 1999 J.Electron. Spectrosc. Relat. Phenom. 101-103 287 [7] Mertinsa H C, Schafersa F, Gauppa A, Gudata W, Kunesb Jand Oppeneer P M 2001 Nucl. Instrum. Methods A 467-4681407 [8] Sun L J, CUI M Q, Zhu J, Zhao Y D, Zheng L, Ma C Y, ChenK, Zhao J, Zhou K J, Wang Z S and Wang H C 2007 High EnergyPhys. Nucl. Phys. 31 400 (in Chinese) [9] Zhu J, Cui M Q, Zheng L, Zhao Y D and Wang Z S 2004 Nucl. Tech. 27 489 (in Chinese) [10] Sun L J 2007 PhD Dissertation (Institute of HighEnergy Physics, Chinese Academy of Sciences) pp 113--114 144 (inChinese)
2008, Vol. 25 
