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纳米力学科学与技术:国际期刊
ESCI SJR: 0.228 SNIP: 0.484 CiteScore™: 0.37

ISSN 打印: 2572-4258
ISSN 在线: 2572-4266

纳米力学科学与技术:国际期刊

Formerly known as Nanomechanics Science and Technology: An International Journal

DOI: 10.1615/NanomechanicsSciTechnolIntJ.v2.i2.20
pages 91-103

NANO-RANGE SELF-OSCILLATIONS OF ATOMIC DISPLACEMENTS IN Nd2Fe14B CRYSTALS IRRADIATED BY γ RAYS

S. K. Godovikov
D. V. Skobeltsyn Research Institute of Nuclear Physics, Moscow State University, 119992 Moscow, Russian Federation
A. N. Ermakov
D. V. Skobeltsyn Research Institute of Nuclear Physics, Moscow State University, 119992 Moscow, Russian Federation
S. M. Nikitin
D. V. Skobeltsyn Research Institute of Nuclear Physics,Institute of Applied Mechanics, Russian Academy of Sciences; Scientific-Research Institute of Nuclear Physics, Moscow State University; and Peoples' Friendship University of Russia, Moscow, Russia
E. A. Nikitina
Institute of Applied Mechanics, Russian Academy of Sciences, Moscow, 119991, Russia

ABSTRACT

The article presents the first observation of nano-range periodic self-oscillations of atomic displacements in Nd2Fe14B crystals irradiated by γ rays with energy up to 6 MeV. The oscillation period takes 15−20 days in the course of 60 days after the end of irradiation. The phenomenon was discussed in terms of the creation of vacancies and their motion. The calculated vibration spectrum was analyzed to consider possible mechanisms of the motion of vacancies.


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