MAGNETO-OPTICAL KERR SPECTROSCOPY OF (СD 3 AS 2)100-X (MNAS) X COMPOSITES-Reference-Cited by-同舟云学术

MAGNETO-OPTICAL KERR SPECTROSCOPY OF (СD 3 AS 2)100-X (MNAS) X COMPOSITES

Published:2024-03-05 Issue:№1_2024 Volume: Page:
ISSN:0579-9392
Container-title:Vestnik Moskovskogo Universiteta, Seriya 3: Fizika, Astronomiya
language:
Short-container-title:VMU

Author:

GANSINA E.A.¹,PRIPECHENKOV I.M.¹,GRANOVSKY A.B.²,JALOLIDDINZODA M.N.³,AL-ONAIZAN M.H.⁴,RIL A.I.⁵,ARONZON B.A.⁶,MARENKIN S.F.⁵

Affiliation:

1. Lomonosov Moscow State University

2. Lomonosov Moscow State University; Institute for theoretical and applied electromagnetics RAS

3. National University of Science and Technology «MISIS»

4. National University of Science and Technology «MISIS»; Kurnakov Institute of General and Inorganic Chemistry

5. Kurnakov Institute of General and Inorganic Chemistry

6. P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Abstract

Composite Films (Сd3As2)100-X(MnAs)X on silicon and sitall substrates with a concentration of Mn 5.8-16.4 at.% were obtained by vacuum-thermal evaporation. The structural properties of the films were investigated by X-ray phase analysis and scanning electron microscopy. Magneto-optical properties were studied by the method of the equatorial Kerr e ect (EEC) in the energy range of 0.5-4.0 eV in magnetic elds with a strength of up to 3 kE at a temperature of 20-300 K. In the geometry of the equatorial Kerr effect, spectral, field and temperature dependences of the EEC are obtained. The analysis of experimental data showed that with a Mn content of more than 12.9 at.% of the films contain the α′′-phase of the topological Dirac semimetal Cd3As2 in the form of large granules, as well as ferromagnetic MNAs granules. The Curie temperature of lms depends on the Mn content in them and is less than the temperature of bulk samples ofMPas. When the Mp content in the lm is 5.8 at.% and 6.4 at.%, the magneto-optical response is not detected, which indicates the formation of a superparamagnetic state or a spin glass state at low concentrations of Mn. With a film content of Mn 9.9 at%. A signi cant change in magneto-optical spectra was detected, which indicates the formation of MNAs nanoclusters and partial dissolution of Mn in the Cd3As2 matrix.

Funder

Russian Science Foundation

Publisher

Moscow University Press

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