Surface Brillouin light spectroscopy of high-frequency guided elastic waves in CoFeB-multilayers on lithium niobate

This data set is a collection of experimental surface Brillouin light scattering (SBLS) spectra obtained from a number of multilayer samples. Layer ticknesses (in nanometers) are indicated under parentheses in the following list of samples: Sample A: Si/SiO2(500)//Ta(6)/Ta(26)/Ru(0.44)/Ta(4) Sample B1: Si/SiO2(500)//Ta(6)/CoFeB(100)/Ru(0.44)/Ta(4) Sample B2: Si/SiO2(500)//Ta(6)/CoFeB(100)/Ru(0.44)/Ta(8) Sample B3: Si/SiO2(500)//Ta(6)/CoFeB(50)/Ru(0.44)/Ta(4) Sample B4: Si/SiO2(500)//Ta(6)/CoFeB(26)/Ru(0.44)/Ta(4) Sample C: LN//Ta(3)/CoFeB(60)/Ru(0.4)/Ta(3) Sample D: Al2O3/LN(110)//Ta(3)/CoFeB(60)/Ru(0.4)/Ta(3) SBLS spectra have been obtained under specific angles of incidence (noted phi, deg.) and azimuth (noted psi, deg.). Spectra for samples A and Bn were obtained for psi=70° and psi=0°. Spectra for samples C and D were obtained for angles indicated in the names of the files. The ZIP archive contains text files that contain the raw Brillouin spectra presented as two columns: 1/ frequency in GHz 2/ photon count.