Issledovanie sverkhtonkikh vzaimodeystviy v sintezirovannykh pri vysokom davlenii soedineniyakh Y(Fe1-xNix)2 (0 x 1) metodom Messbauerovskoy spektroskopii
- Авторлар: Bokov A.1,2, Magnitskaya M.1,3, Salamatin D.1, Tsvyashchenko A.1
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Мекемелер:
- Vereshchagin Institute of High Pressure Physics, Russian Academy of Sciences
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University
- Lebedev Physical Institute, Russian Academy of Sciences
- Шығарылым: Том 163, № 3 (2023)
- Беттер: 350-356
- Бөлім: Articles
- URL: https://journals.rcsi.science/0044-4510/article/view/145272
- DOI: https://doi.org/10.31857/S0044451023030069
- EDN: https://elibrary.ru/QECNYL
- ID: 145272
Дәйексөз келтіру
Аннотация
The measurements of magnetic hyperfine fields (MHF), Hhf, and isomer shift, δ, in Y(Fe1 – xNix)2 intermetallic compounds (the MgCu2 structure type) synthesized at high pressure are performed. The MHF values that appear on 57Fe nuclei at a nickel concentration x below 20 at % practically do not change and are approximately equal to 22 T, and in the range from x = 0.4 to 0.98 they decrease linearly with an increase in the Ni concentration. However, linear extrapolation of the hyperfine field as a function of Ni concentration does not lead to its disappearance in YNi2. For YFe2, the rotation of the easy axis from the [101] direction to the [111] direction with increasing temperature is found. As the Ni concentration increases to x = 0.3 at a temperature of 5 K, the easy magnetization axis [101] is observed, and at x = 0.4 the axis changes direction to [100]. Based on the shape of the concentration dependence of the hyperfine field, it is assumed that during the crystallization of Y(Fe1 – xNix)2 under high pressure conditions, a magnetic moment exists on Ni ions. First-principles calculations of magnetic properties and hyperfine interactions are performed, which are consistent with experiment.
Авторлар туралы
A. Bokov
Vereshchagin Institute of High Pressure Physics, Russian Academy of Sciences; Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University
Email: bokov@hppi.troitsk.ru
108840, Moscow, Russia; 119991, Moscow, Russia
M. Magnitskaya
Vereshchagin Institute of High Pressure Physics, Russian Academy of Sciences; Lebedev Physical Institute, Russian Academy of Sciences
Email: bokov@hppi.troitsk.ru
108840, Moscow, Russia; 119991, Moscow, Russia
D. Salamatin
Vereshchagin Institute of High Pressure Physics, Russian Academy of Sciences
Email: bokov@hppi.troitsk.ru
108840, Moscow, Russia
A. Tsvyashchenko
Vereshchagin Institute of High Pressure Physics, Russian Academy of Sciences
Хат алмасуға жауапты Автор.
Email: bokov@hppi.troitsk.ru
108840, Moscow, Russia
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