Dielectric Functions and Optical Phonon Modes for LaSrMnO3 and LaMnO3

The aim of this study was to define electrical and magnetic properties of complex multilayer ferromagnetic structures such as SrTiO3/LaMnO3/LaSrMnO3/LaMnO3/SrTiO3 using ellipsometry.

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1. Dielectric Functions and Optical Phonon Modes for LaSrMnO 3 and LaMnO 3 VERONIKA BUROBINA
2. Aim of Study Definition of electrical and magnetic properties of multilayer ferromagnetic materials such as SrTiO3 /LaMnO3 /LaSrMnO3 /LaMnO3 /SrTiO3 using ellipsometry 2
3. STO Substrate 3
4. Sample ML 17 STO/LMO/STO LMO 6.8 nm STO 0.781 nm (2ML) STO 0.432 mm 4 Metalorganic aerosol deposition (MAD) technique was used to synthesize the samples
5. Sample ML 58 STO/LMO/STO STO 0. 781 nm (2ML) STO 0.432 mm LMO 10 nm 5
6. Sample ML 41 STO/LMO/LSMO/LMO/STO LMO 0.830 nm (2 ML) LSMO 9 nm STO 0.432 mm LMO 0.830 nm (2ML) STO 0.781 nm (2 ML) 6
7. Ellipsometric Measured Data and Model for Two Angles of Incidence for STO Substrate 7 Generated and Experimental Photon Energy (eV) 0 2 4 6 8 10  in degrees 0 5 10 15 20 25 30 35 Model Fit Exp E 50° Exp E 70°
8. Experimental and Model-Fit Data for Sample ML 17, STO/LMO/STO 8 Experimental Data Wave Number (cm -1) 30000 40000 50000 60000 70000 80000  in degrees 9 12 15 18 21 24 27 30 Model Fit Exp E 50° Exp E 70°
9. Optical Constants for Sample ML 17, STO/LMO/STO 9 Optical Constants Wave Number (cm -1) 30000 40000 50000 60000 70000 80000 Real(Dielectric Constant), 1 Imag(Dielectric Constant), 2 0 2 4 6 8 10 12 2 4 6 8 10 lmo_pbp, 1 (sto4_9), 1 lmo_pbp, 2 (sto4_9), 2
10. Experimental and Model-Fit Data for Sample ML 58, STO/LMO/STO 10 Generated and Experimental Wave Number (cm -1) 30000 40000 50000 60000 70000 80000  in degrees 10 15 20 25 30 35 Model Fit Exp E 50° Exp E 70°
11. Optical Constants for Sample ML 58, STO/LMO/STO 11 Optical Constants Wave Number (cm -1) 30000 40000 50000 60000 70000 80000 Real(Dielectric Constant), 1 Imag(Dielectric Constant), 2 0 2 4 6 8 10 12 0 2 4 6 8 10 lmo_pbp, 1 (sto4_9), 1 lmo_pbp, 2 (sto4_9), 2
12. Models of STO substrate and samples of STO/LMO/STO, LMO/LSMO/LMO, and SMO/LMO/SMO in the infrared 12 Generated and Experimental Wave Number (cm-1) 300 600 900 1200 1500 1800 2100  in degrees 0 20 40 60 80 100 Model Fit Exp E 50° Exp E 70° Experimental and Model-Fit Data for STO Substrate
13. Infrared Region 13 Experimental and Model-Fit Data for Sample ML 17, STO/LMO/STO Generated and Experimental Wave Number (cm -1) 200 400 600 800 1000 1200  in degrees 0 20 40 60 80 100 Model Fit Exp E 50° Exp E 70°
14. Infrared Region 14 Experimental and Model-Fit Data for Sample ML 58, STO/LMO/STO Generated and Experimental Wave Number (cm -1) 200 400 600 800 1000 1200  in degrees 0 20 40 60 80 Model Fit Exp E 50° Exp E 70°
15. Infrared Region 15 Experimental and Model-Fit Data for Sample ML 41, LMO/LSMO/LMO Generated and Experimental Wave Number (cm -1) 250 440 630 820 1010 1200  in degrees 0 16 32 48 64 80 Model Fit Exp E 50° Exp E 70°
16. Infrared Region 16 Experimental and Model-Fit Data for Sample ML 59, SMO/LMO/SMO Generated and Experimental Wave Number (cm -1) 200 400 600 800 1000 1200  in degrees 0 16 32 48 64 80 Model Fit Exp E 50° Exp E 70°
17. Infrared Region 17 ML 17, STO/LMO/STO, ML 41, LMO/LSMO/LMO, ML 58, SMO/LMO/SMO, and ML 59, SMO/LMO/SMO