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Spall Strength of Shock-Heated Hafnium and the Equation of State of Its Polymorphic Modifications
Pleiades Publishing Ltd - Tập 61 - Trang 1437-1443 - 2019
A. M. Molodets, A. A. Golyshev
We determined the spall strength of hafnium heated by a loading shock wave to thousands of degrees and subjected to transformations into denser polymorphic modifications. To achieve this goal, the following tasks were solved. The pressure profiles at the interface between the sample and soft buffer material in the spall experiments with flat, one-dimensional loading are measured. The equations of ...... hiện toàn bộ
Variability of the resulting microdeformation field in the Zn1 – xV x Se crystals (0.01 ≤ x ≤ 0.10)
Pleiades Publishing Ltd - Tập 60 Số 1 - Trang 49-59 - 2018
Maksimov, V. I., Maksimova, E. N., Surkova, T. P.
A detailed neutronographic study of the bulk ZnSe crystals doped with vanadium up to the content commensurate with the solubility limit in a semiconductor matrix has been carried out for the first time at room temperature. The data that characterize nonuniformly-deformed states based on the cubic structural modification of the II–VI compounds are obtained. A simplified analysis of the broadening p...... hiện toàn bộ
Antiferromagnet-ferromagnet transition in α-MnxS manganese sulfides
Pleiades Publishing Ltd - Tập 43 - Trang 493-495 - 2001
G. A. Petrakovskii, L. I. Ryabinkina, G. M. Abramova, D. A. Velikanov, A. F. Bovina
Off-stoichiometric manganese monosulfides α-MnxS (1≤x≤1.25) are synthesized, and their crystal structure and magnetic properties are studied in the 4.2-to 300-K range. The compounds have a NaCl fcc lattice. Increasing the manganese ion concentration x in the antiferromagnetic semiconductors α-MnxS is found to result in concentration-(x c ∼ 1.05) and temperature-...... hiện toàn bộ
Donor-acceptor recombination in type-II GaAs/AlAs superlattices
Pleiades Publishing Ltd - Tập 40 Số 9 - Trang 1577-1581 - 1998
К. С. Журавлев, A. M. Gilinskiǐ, Т. С. Шамирзаев, В. В. Преображенский, B. R. Semyagin, М. А. Putyato, S. S. Chipkin
Effect of internal stray fields on the high-frequency properties of magnetic thin films
Pleiades Publishing Ltd - Tập 46 - Trang 479-483 - 2004
N. G. Chechenin
The effect of internal stray fields generated in nanocrystalline ultrasoft films with inducted uniaxial magnetic anisotropy (due to an arbitrary orientation of the crystallites) on the high-frequency magnetic susceptibility is considered. It is demonstrated that internal stray fields comparable to the field of magnetic anisotropy can lead to a substantial broadening and a bimodal form of the magne...... hiện toàn bộ
Changes in the electronic structure upon the B2–B19′ martensitic transformation in titanium-nickel
Pleiades Publishing Ltd - Tập 43 - Trang 737-745 - 2001
S. E. Kulkova, D. V. Valujsky, I. Yu. Smolin
The self-consistent band structure of a TiNi intermetallic compound in two phases is calculated by the full-potential linearized augmented-plane-wave (FLAPW) method. The features of changes in the density of states upon B2–B19′ martensitic transformation are discussed. The influence of atomic positions on the electronic structure of the martensitic monoclinic phase is examined. The frequency depen...... hiện toàn bộ
Possibility of observing chiral-symmetry effects in ferromagnetic nanoparticles
Pleiades Publishing Ltd - Tập 48 - Trang 1902-1905 - 2006
S. N. Vdovichev, B. A. Gribkov, S. A. Gusev, V. L. Mironov, D. S. Nikitushkin, A. A. Fraerman, V. B. Shevtsov
The statistics of left-and right-handed vortical magnetization states in a system of submicron-sized ferromagnetic disks is studied experimentally. Lattices of elliptic cobalt particles with a planar size of 750 × 450 nm and a thickness of 25 nm were formed using high-resolution electronic lithography. To visualize the magnetization distributions in the disks, magnetic force microscopy was used. T...... hiện toàn bộ
Optical study of the spontaneous ferroelectric phase transition in lead scandoniobate single crystals
Pleiades Publishing Ltd - Tập 42 Số 9 - Trang 1712-1715 - 2000
Kamzina, L. S., Krainik, N. N.
A study is reported of the optical transmission and small-angle light scattering (SAS) in ordered and disordered stoichiometric single crystals of lead scandoniobate (PSN) with a zero and a dc electric field applied. It is shown that the spontaneous phase transition occurring in both crystals is accompanied by a sharp peak in SAS intensity, which implies the percolation nature of this transition. ...... hiện toàn bộ
Influence of surface on the effective magnetic fields in α-Fe2O3 and FeBO3
Pleiades Publishing Ltd - Tập 42 - Trang 1691-1695 - 2000
A. S. Kamzin, B. Stahl, R. Gellert, M. Müller, E. Kankeleit, D. B. Vcherashnii
First measurements of the effective magnetic fields as a function of the depth at which the iron ions are in the surface layer of α-Fe2O3 and FeBO3 single crystals are reported. The method used is the depth-selective conversion-electron Mössbauer spectroscopy. An analysis of experimental spectra revealed that the magnetic properties of the crystal surface vary smoothly from the bulk to surface cha...... hiện toàn bộ
Hierarchy of statistical ensembles of nanodefects on the surface of stressed molybdenum
Pleiades Publishing Ltd - Tập 44 - Trang 1316-1322 - 2002
A. Ya. Bashkarev, V. I. Vettegren’, V. N. Svetlov
The evolution of the distribution of nanodefects that are formed under the effect of tensile stresses existing at the surface of polished foils of molybdenum was studied. The nanodefects form four statistical ensembles in which the size distribution is determined by the maximum of the configurational entropy. The energy of formation and the average size of nanodefects in adjacent ensembles differ ...... hiện toàn bộ
Tổng số: 6,809   
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