Temperature Studies of the LaMn2Si2 Intermetallide by the Raman Spectroscopy and Magnetic Force Microscopy Methods

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Abstract

Raman spectra of the LaMn2Si2 compound were obtained for the first time by Raman spectroscopy. The change of 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.

About the authors

Yu. V. Korkh

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Author for correspondence.
Email: korkh@imp.uran.ru
Russian Federation, Ekaterinburg, 620108

E. A. Ponomareva

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences

Email: korkh@imp.uran.ru
Russian Federation, Ekaterinburg, 620108

A. V. Druzhinin

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University named after the First President of Russia B.N. Yeltsin

Email: korkh@imp.uran.ru
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002

E. G. Gerasimov

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University named after the First President of Russia B.N. Yeltsin

Email: korkh@imp.uran.ru
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002

N. V. Mushnikov

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University named after the First President of Russia B.N. Yeltsin

Email: korkh@imp.uran.ru
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002

T. V. Kuznetsova

Miheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University named after the First President of Russia B.N. Yeltsin

Email: korkh@imp.uran.ru
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002

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