Infrared and Laser Engineering, Volume. 53, Issue 7, 20240181(2024)
The study of LIPSS on magnetic nickel film induced by high repetition femtosecond laser
Figures & Tables(8)
Fig. 1. Schematic diagram of galvanometer-based femtosecond laser processing system
Fig. 2. LIPSS morphology at laser power of (a) 100 mW, (b) 200 mW and (c) 250 mW (scanning speed 50 mm/s)
Fig. 3. LIPSS structure when laser polarization direction is perpendicular to scanning direction
Fig. 4. (a) Optical microscope image and (b) scanning electron microscopy image of grating samples with a period of 40 microns
Fig. 5. Test results of XRD. (a) XRD spectra of grating samples with different periods; (b) Overlapping image of nickel peak curve in XRD
Fig. 6. SQUID test results with magnetic field range of (a) −4000-4000 Oe and (b) −500-500 Oe
Table 1. Saturation magnetization, coercivity, and residual magnetization data of different samples
View tableView in ArticleTable 1. Saturation magnetization, coercivity, and residual magnetization data of different samples
Sample Saturation magnetization/emu Coercive force/Oe Remanence/emu Reference sample 4.069 88.13 6.39 40 μm 3.052 112.69 4.45 24 μm 2.364 141.23 5.82
Table 2. Corresponding values of parameters during the calibration of saturation magnetization
View tableView in ArticleTable 2. Corresponding values of parameters during the calibration of saturation magnetization
Sample Ms rv $ M_{\mathrm{s}}^{\prime} $ rm Reference sample 4.069 1 4.069 1 40 μm 3.052 0.77 3.964 0.97 24 μm 2.364 0.64 3.693 0.91
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Yufei JI, Hongrui WANG, Hong CHANG, Bowen LIU, Dongqing PANG, Minglie HU. The study of LIPSS on magnetic nickel film induced by high repetition femtosecond laser[J]. Infrared and Laser Engineering, 2024, 53(7): 20240181
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Received: Apr. 24, 2024
Accepted: --
Published Online: Aug. 9, 2024
The Author Email: PANG Dongqing (pangdongqing@tju.edu.cn)
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