Modification of the Ferromagnetic Properties of Si1 –xMnx Thin Films Synthesized by Pulsed Laser Deposition with a Variation in the Buffer-Gas Pressure


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A series of thin films of Si1 –xMnx alloys with a thickness from 50 to 100 nm grown by pulsed laser deposition on an Al2O3 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.

作者简介

O. Novodvorsky

Institute of Laser and Information Technologies—Branch of the Federal Scientific Research Center
“Crystallography and Photonics”, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: onov@mail.ru
俄罗斯联邦, Shatura, 140700

V. Mikhalevsky

Institute of Laser and Information Technologies—Branch of the Federal Scientific Research Center
“Crystallography and Photonics”, Russian Academy of Sciences

Email: onov@mail.ru
俄罗斯联邦, Shatura, 140700

D. Gusev

Institute of Laser and Information Technologies—Branch of the Federal Scientific Research Center
“Crystallography and Photonics”, Russian Academy of Sciences

Email: onov@mail.ru
俄罗斯联邦, Shatura, 140700

A. Lotin

Institute of Laser and Information Technologies—Branch of the Federal Scientific Research Center
“Crystallography and Photonics”, Russian Academy of Sciences

Email: onov@mail.ru
俄罗斯联邦, Shatura, 140700

L. Parshina

Institute of Laser and Information Technologies—Branch of the Federal Scientific Research Center
“Crystallography and Photonics”, Russian Academy of Sciences

Email: onov@mail.ru
俄罗斯联邦, Shatura, 140700

O. Khramova

Institute of Laser and Information Technologies—Branch of the Federal Scientific Research Center
“Crystallography and Photonics”, Russian Academy of Sciences

Email: onov@mail.ru
俄罗斯联邦, Shatura, 140700

E. Cherebylo

Institute of Laser and Information Technologies—Branch of the Federal Scientific Research Center
“Crystallography and Photonics”, Russian Academy of Sciences

Email: onov@mail.ru
俄罗斯联邦, Shatura, 140700

A. Drovosekov

Kapitza Institute for Physical Problems, Russian Academy of Sciences

Email: onov@mail.ru
俄罗斯联邦, Moscow, 119334

V. Rylkov

National Research Center “Kurchatov Institute”; Fryazino Branch of the Kotelnikov Institute of Radioengineering and Electronics,
Russian Academy of Sciences

Email: onov@mail.ru
俄罗斯联邦, Moscow, 123182; Fryazino, 141190

S. Nikolaev

National Research Center “Kurchatov Institute”

Email: onov@mail.ru
俄罗斯联邦, Moscow, 123182

K. Chernoglazov

National Research Center “Kurchatov Institute”

Email: onov@mail.ru
俄罗斯联邦, Moscow, 123182

K. Maslakov

Moscow State University

Email: onov@mail.ru
俄罗斯联邦, Moscow, 119991

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