Abstract
Raman spectra of the LaMn2Si2 compound were obtained for the first time by Raman spectroscopy. The change in the Raman spectral characteristics in the temperature range of 263–553 K was investigated. The high sensitivity of the Raman spectroscopy method to a change in the magnetic state caused by a temperature influence has been determined. A change in the spectral characteristics of the vibration mode of manganese atoms near the Curie and Neel temperatures has been revealed. The magnetic force microscopy technique was used to investigate the surface features of the LaMn2Si2 compound at room temperature. A change in the type of magnetic domain structure in LaMn2Si2 after cooling from 298 to 263 K has been found.
REFERENCES
E. G. Gerasimov, M. I. Kurkin, A. V. Korolyov, and V. S. Gaviko, “Magnetic anisotropy and ferro-antiferromagnetic phase transition in LaMn2Si2,” Phys. B: Condens. Matter 322, 297–305 (2002). https://doi.org/10.1016/s0921-4526(02)01196-1
N. V. Mushnikov, E. G. Gerasimov, P. B. Terentev, and V. S. Gaviko, “Magnetic structures and magnetic phase transitions in RMn2Si2,” AIP Adv. 8, 101411 (2018). https://doi.org/10.1063/1.5043061
T. V. Kuznetsova, Yu. V. Korkh, V. I. Grebennikov, D. I. Radzivonchik, E. A. Ponomareva, E. G. Gerasimov, and N. V. Mushnikov, “Investigation of electronic states and magnetic domain structure of La1 ‒ xSmxMn2Si2 (x = 0, 0.25) layered intermetallic compounds by resonant photoemission spectroscopy and magnetic force microscopy,” Phys. Met. Metallogr. 123, 451–458 (2022). https://doi.org/10.1134/s0031918x22050064
Raman Spectroscopy for Nanomaterials Characterization, Ed. by Ch. S. S. R. Kumar (Springer, Berlin, 2012). https://doi.org/10.1007/978-3-642-20620-7
I. R. Lewis and H. Edwards, Handbook of Raman Spectroscopy: From the Research Laboratory to the Process Line (CRC Press, 2001).
S. Yamanaka, M. Kajiyama, S. N. Sivakumar, and H. Fukuoka, “Strong electron-phonon coupling and enhanced phonon Grüneisen parameters in valence-fluctuating metal EuPd2Si2,”, 481 (2004).
S. L. Cooper, M. V. Klein, Z. Fisk, and J. L. Smith, “Raman scattering study of the electronic and vibrational excitations in CeCu2Si2,” Phys. Rev. B 34, 6235–6239 (1986). https://doi.org/10.1103/physrevb.34.6235
A. Antal, T. Knoblauch, Y. Singh, P. Gegenwart, D. Wu, and M. Dressel, “Optical properties of the iron-pnictide analog BaMn2As2,” Phys. Rev. B 86, 14506 (2012). https://doi.org/10.1103/physrevb.86.014506
A. Schwarz and R. Wiesendanger, “Magnetic sensitive force microscopy,” Nano Today 3, 28–39 (2008). https://doi.org/10.1016/s1748-0132(08)70013-6
O. Kazakova, R. Puttock, C. Barton, H. Corte-León, M. Jaafar, V. Neu, and A. Asenjo, “Frontiers of magnetic force microscopy,” J. Appl. Phys. 125, 60901 (2019). https://doi.org/10.1063/1.5050712
S.-W. Cheong, M. Fiebig, W. Wu, L. Chapon, and V. Kiryukhin, “Seeing is believing: Visualization of antiferromagnetic domains,” npj Quantum Mater. 5, 3 (2020). https://doi.org/10.1038/s41535-019-0204-x
E. G. Gerasimov, V. S. Gaviko, V. N. Neverov, and A. V. Korolyov, “Magnetic phase transitions and giant magnetoresistance in La1 − xSmxMn2Si2 (0 ≤ x ≤ 1),” J. Alloys Compd. 343, 14–25 (2002). https://doi.org/10.1016/s0925-8388(02)00110-x
M. N. Iliev, M. V. Abrashev, J. Laverdière, S. Jandl, M. M. Gospodinov, Y.-Q. Wang, and Y.-Y. Sun, “Distortion-dependent Raman spectra and mode mixing in RMnO3 perovskites (R = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Y),” Phys. Rev. B 73, 64302 (2006). https://doi.org/10.1103/physrevb.73.064302
S. Bernardini, F. Bellatreccia, A. Casanova Municchia, G. Della Ventura, and A. Sodo, “Raman spectra of natural manganese oxides,” J. Raman Spectrosc. 50, 873–888 (2019). https://doi.org/10.1002/jrs.5583
P. Borowicz, M. Latek, W. Rzodkiewicz, A. Łaszcz, A. Czerwinski, and J. Ratajczak, “Deep-ultraviolet Raman investigation of silicon oxide: Thin film on silicon substrate versus bulk material,” Adv. Nat. Sci.: Nanosci. Nanotechnol. 3, 045003 (2012). https://doi.org/10.1088/2043-6262/4/045003
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This study was supported by the Russian Science Foundation, project no. 23-72-00067, https://rscf.ru/project/23-72-00067/.
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Translated by A. Seferov
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Korkh, Y.V., Ponomareva, E.A., Druzhinin, A.V. et al. Temperature Studies of the LaMn2Si2 Intermetallide by the Raman Spectroscopy and Magnetic Force Microscopy Methods. Phys. Metals Metallogr. 125, 261–266 (2024). https://doi.org/10.1134/S0031918X23603086
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DOI: https://doi.org/10.1134/S0031918X23603086