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Title: Modification of the Ferromagnetic Properties of Si{sub 1–x}Mn{sub x} Thin Films Synthesized by Pulsed Laser Deposition with a Variation in the Buffer-Gas Pressure

Abstract

A series of thin films of Si{sub 1–x}Mn{sub x} alloys with a thickness from 50 to 100 nm grown by pulsed laser deposition on an Al{sub 2}O{sub 3} substrate in vacuum and in an argon atmosphere is investigated. The significant effect of the buffer-gas pressure in the sputtering chamber on the structural and magnetic homogeneity of the obtained films is shown. The conditions for the formation of a ferromagnetic phase with a high Curie temperature (>300 K) in the samples are studied. With the use of the Langmuir probe method, the threshold of ablation of a MnSi target by second harmonic radiation (λ = 532 nm) of a Nd:YAG Q-switch laser is determined. The time-of-flight curves for the plume ions are obtained with a change in the energy density at the target and argon pressure in the sputtering chamber. A nonmonotonic dependence of the probe time-of-flight signal amplitude on the argon pressure is established for high-energy particles of the plume.

Authors:
; ; ; ; ; ;  [1];  [2]; ; ;  [3];  [4]
  1. Institute of Laser and Information Technologies—Branch of the Federal Scientific Research Center“Crystallography and Photonics”, Russian Academy of Sciences (Russian Federation)
  2. Kapitza Institute for Physical Problems, Russian Academy of Sciences (Russian Federation)
  3. National Research Center “Kurchatov Institute” (Russian Federation)
  4. Moscow State University (Russian Federation)
Publication Date:
OSTI Identifier:
22749726
Resource Type:
Journal Article
Journal Name:
Semiconductors
Additional Journal Information:
Journal Volume: 52; Journal Issue: 11; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7826
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; ALUMINIUM OXIDES; ARGON; CURIE POINT; ENERGY BEAM DEPOSITION; ENERGY DENSITY; IONS; LANGMUIR PROBE; LASER RADIATION; NEODYMIUM LASERS; PULSED IRRADIATION; THIN FILMS; TIME-OF-FLIGHT METHOD

Citation Formats

Novodvorsky, O. A., E-mail: onov@mail.ru, Mikhalevsky, V. A., Gusev, D. S., Lotin, A. A., Parshina, L. S., Khramova, O. D., Cherebylo, E. A., Drovosekov, A. B., Rylkov, V. V., Nikolaev, S. N., Chernoglazov, K. Yu., and Maslakov, K. I. Modification of the Ferromagnetic Properties of Si{sub 1–x}Mn{sub x} Thin Films Synthesized by Pulsed Laser Deposition with a Variation in the Buffer-Gas Pressure. United States: N. p., 2018. Web. doi:10.1134/S1063782618110179.
Novodvorsky, O. A., E-mail: onov@mail.ru, Mikhalevsky, V. A., Gusev, D. S., Lotin, A. A., Parshina, L. S., Khramova, O. D., Cherebylo, E. A., Drovosekov, A. B., Rylkov, V. V., Nikolaev, S. N., Chernoglazov, K. Yu., & Maslakov, K. I. Modification of the Ferromagnetic Properties of Si{sub 1–x}Mn{sub x} Thin Films Synthesized by Pulsed Laser Deposition with a Variation in the Buffer-Gas Pressure. United States. doi:10.1134/S1063782618110179.
Novodvorsky, O. A., E-mail: onov@mail.ru, Mikhalevsky, V. A., Gusev, D. S., Lotin, A. A., Parshina, L. S., Khramova, O. D., Cherebylo, E. A., Drovosekov, A. B., Rylkov, V. V., Nikolaev, S. N., Chernoglazov, K. Yu., and Maslakov, K. I. Thu . "Modification of the Ferromagnetic Properties of Si{sub 1–x}Mn{sub x} Thin Films Synthesized by Pulsed Laser Deposition with a Variation in the Buffer-Gas Pressure". United States. doi:10.1134/S1063782618110179.
@article{osti_22749726,
title = {Modification of the Ferromagnetic Properties of Si{sub 1–x}Mn{sub x} Thin Films Synthesized by Pulsed Laser Deposition with a Variation in the Buffer-Gas Pressure},
author = {Novodvorsky, O. A., E-mail: onov@mail.ru and Mikhalevsky, V. A. and Gusev, D. S. and Lotin, A. A. and Parshina, L. S. and Khramova, O. D. and Cherebylo, E. A. and Drovosekov, A. B. and Rylkov, V. V. and Nikolaev, S. N. and Chernoglazov, K. Yu. and Maslakov, K. I.},
abstractNote = {A series of thin films of Si{sub 1–x}Mn{sub x} alloys with a thickness from 50 to 100 nm grown by pulsed laser deposition on an Al{sub 2}O{sub 3} substrate in vacuum and in an argon atmosphere is investigated. The significant effect of the buffer-gas pressure in the sputtering chamber on the structural and magnetic homogeneity of the obtained films is shown. The conditions for the formation of a ferromagnetic phase with a high Curie temperature (>300 K) in the samples are studied. With the use of the Langmuir probe method, the threshold of ablation of a MnSi target by second harmonic radiation (λ = 532 nm) of a Nd:YAG Q-switch laser is determined. The time-of-flight curves for the plume ions are obtained with a change in the energy density at the target and argon pressure in the sputtering chamber. A nonmonotonic dependence of the probe time-of-flight signal amplitude on the argon pressure is established for high-energy particles of the plume.},
doi = {10.1134/S1063782618110179},
journal = {Semiconductors},
issn = {1063-7826},
number = 11,
volume = 52,
place = {United States},
year = {2018},
month = {11}
}