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Your search keyword '"A. V. Matovnikov"' showing total 2 results
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2 results on '"A. V. Matovnikov"'

1. Temperature-dependent influence of disorder on the thermodynamic properties of Sn20.5□3.5As20I8, a vacancy-driven superstructure of the type-I clathrate

Author

Andrei V. Shevelkov, A. V. Matovnikov, N. V. Mitroshenkov, Anton V. Morozov, Maxim S. Likhanov, and Vladimir V. Novikov

Subjects
Materials science, Vacancy defect, Clathrate hydrate, Thermodynamics, Crystallite, Type (model theory), Condensed Matter Physics, Cell parameter, Superstructure (condensed matter), Heat capacity, Ampoule
Abstract

A polycrystalline sample of the Sn20.5□3.5As22I8 clathrate was synthesised by a standard ampoule method from elements. Temperature dependencies of the heat capacity Cp(T) and unit cell parameter a(...

Published
2021
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2. Spin glass and glass-like lattice behaviour in HoB66at low temperatures

Author

A. V. Matovnikov, N. V. Mitroshenkov, Hyunsoo Kim, Makariy A. Tanatar, Ruslan Prozorov, S.L. Bud'ko, V. V. Novikov, and D. V. Avdashchenko

Subjects
Lattice dynamics, Phase transition, chemistry.chemical_compound, Spin glass, Materials science, Specific heat, Condensed matter physics, chemistry, Lattice (order), Boride, Condensed Matter Physics, Magnetic susceptibility, Thermal expansion
Abstract

The low-temperature specific heat, magnetic susceptibility, and thermal expansion are studied experimentally in the fcc boride HoB66 and compared to similar quantities in non-magnetic LuB66. The anomalous behaviour observed in HoB66 is explained within a glass-like picture together with magnetic subsystem ordering processes. The character of the observed anomalies suggests the existence of a spin-glass phase transition in HoB66 below a characteristic temperature of T s ≈ 0.98 K.

Published
2013
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