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Каталог книг и брошюр библиотеки ИФ СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Дрокина, Тамара Васильевна, Петраковский, Герман Антонович, Молокеев, Максим Сергеевич, Великанов, Дмитрий Анатольевич, Плетнев, Олег Николаевич, Баюков, Олег Артемьевич
Заглавие : Особенности кристаллической структуры и магнитные свойства соединения DyFeTi2O7
Место публикации : Физ. тверд. тела. - 2013. - Т. 55, Вып. 10. - С. 1922-1927
Аннотация: Представлены результаты исследования особенностей кристаллической структуры и распределения катионов железа по позициям в соединении DyFeTi2O7, проведено сравнение с изоструктурным соединением GdGaTi2O7. Методами мессбауэровской спектроскопии и рентгеновской дифракции подтвержден атомный беспорядок в распределении ионов железа Fe3+ по структурным позициям в DyFeTi2O7. Результаты магнитных измерений в низкотемпературной области показывают излом на температурной зависимости магнитного момента и его зависимость от магнитной предыстории образца. Полученные экспериментальные данные позволяют сделать вывод о реализации состояния спинового стекла с температурой замерзания Tf=6 K в соединении DyFeTi2O7
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gokhfeld D. M., Balaev D. A., Yakimov I. S., Petrov M. I., Semenov S. V.
Заглавие : Tuning the peak effect in the Y1−xNdxBa2Cu3O7−δ compound
Место публикации : Ceram. Int.: Elsevier, 2017. - Vol. 43, Is. 13. - P.9985-9991. - ISSN 02728842 (ISSN), DOI 10.1016/j.ceramint.2017.05.011
Примечания : Cited References: 37. - This work was supported by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project no. 16-48-243018 and the Russian Foundation for Basic Research, project no. 16-38-00400.
Ключевые слова (''Своб.индексиров.''): peak effect--bulk superconductors--critical current--pinning--characterization--ybco
Аннотация: Polycrystalline Y1−xNdxBa2Cu3O7−δ (x=0.02, 0.11, and 0.25) superconductors are synthesized. Nd atoms are uniformly distributed over grains. The magnetization loops of the samples have a pronounced second peak in a wide temperature range. The magnetization data are analyzed using the extended critical state model. It is found that the order-disorder transition of the vortex lattice is affected by doping with neodymium and temperature; the second-peak field and width decrease monotonically with increasing x value. The undoped polycrystalline YBa2Cu3O7−δ compound is assumed to exhibit the peak effect in higher magnetic fields.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Semenov S. V., Gokhfeld D. M., Balaev D. A., Yakimov I. S., Petrov M. I.
Заглавие : Tuning the peak effect by in Y1-xNdxBa2Cu3O7-δ compound by Nd doping
Коллективы : Moscow International Symposium on Magnetism, Московский государственный университет им. М.В. Ломоносова, Российский фонд фундаментальных исследований
Место публикации : Moscow International Symposium on Magnetism (MISM-2017): 1-7 July 2017 : book of abstracts. - 2017. - Ст.3PO-I-19. - P.576
Примечания : Библиогр.: 4
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Flerov I. N., Kartashev A. V., Gorev M. V., Bogdanov E. V., Mel'nikova S. V., Molokeev M. S., Pogoreltsev E. I., Laptash N. M.
Заглавие : Thermal, structural, optical, dielectric and barocaloric properties at ferroelastic phase transition in trigonal (NH4)2SnF6: A new look at the old compound
Место публикации : J. Fluor. Chem.: Elsevier, 2016. - Vol. 183. - P.1-9. - ISSN 00221139 (ISSN), DOI 10.1016/j.jfluchem.2015.12.010
Примечания : Cited References: 25. - The reported study was partially supported by RFBR, research project No. 15-02-02009a.
Предметные рубрики: Heat-capacity
Ammonium
(NH4)3TiF7
Pressure
Ключевые слова (''Своб.индексиров.''): fluorides--structural disorder--phase transitions--entropy--barocaloric effect
Аннотация: Structural phase transition P-3m1 → P-1 of the first order and nonferroelectric nature was found in (NH4)2SnF6 at about 110 K in the process of thermal, optical, dielectric and X-ray studies. Order-disorder transformation is accompanied by large changes of entropy (ΔS0 = 16.4 J/mol K) and volume (ΔV0/V ≈ 1%). The structural model associated with three orientations of NH4 tetrahedra in P-3m1 phase and their complete ordering in P-1 phase was suggested with the entropy change (ΔS0 = 18.3 J/mol K) close to the experimental value. A good agreement between baric coefficients measured in a direct way (dT0/dp = -157 K/GPa) and evaluated using entropy and volume changes at phase transition (-170 K/GPa) was found. Barocaloric effects in (NH4)2SnF6 are comparable with those of known solid state refrigerants and are characterised by a low-pressure need for realising their maximum values. © 2015 Elsevier B.V. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzubov A. A., Eliseeva N. S., Krasnov P. O., Kuklin A. V., Kovaleva E. A., Kholtobina A. S.
Заглавие : Theoretical investigation of the adsorption and diffusion of hydrogen on the surface and in the bulk of the intermetallic compound Mg2Ni
Место публикации : Phys. Solid State: Pleiades Publishing, 2014. - Vol. 56, Is. 10. - P.2035-2042. - ISSN 1063-7834, DOI 10.1134/S1063783414100187. - ISSN 1090-6460
Примечания : Cited References: 30
Предметные рубрики: STORAGE MATERIAL Mg2NiH4
INITIO MOLECULAR-DYNAMICS
AUGMENTED-WAVE METHOD
MINIMUM ENERGY PATHS
ELASTIC BAND METHOD
TEMPERATURE STRUCTURE
SADDLE-POINTS
ALLOYS
TRANSITION
MAGNESIUM
Аннотация: The intermetallic compound Mg2Ni as a potential material for hydrogen storage has been investigated theoretically. The sorption and diffusion of a hydrogen atom in the bulk and on the surface of this material, as well as the step-by-step process of dissociative chemisorption of a H-2 molecule on the surface, have been considered. The dependence of the sorption energy of atomic hydrogen on the structural characteristics of the intermetallic compound Mg2Ni has been analyzed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhandun V. S., Zinenko V. I.
Заглавие : The effect of structural ordering on the magnetic, electronic, and optical properties of the LaPbMnSbO6 double perovskite
Коллективы : Russian Foundation for Basic Research [15-02-00340-a]; Russian Federation [NSH-924.2014.2]
Место публикации : J. Alloys Compd.: Elsevier Science, 2016. - Vol. 671. - P.184-191. - ISSN 0925-8388, DOI 10.1016/j.jallcom.2016.02.085. - ISSN 1873-4669(eISSN)
Примечания : Cited References:32. - This work was supported by the Russian Foundation for Basic Research, project no. 15-02-00340-a and the Grant of the President of the Russian Federation for Support of Leading Scientific Schools no. NSH-924.2014.2.
Предметные рубрики: SYSTEMS
NI
CO
Ключевые слова (''Своб.индексиров.''): ab initio calculation--double perovskite--magnetic materials--optical--properties--electronic properties--magnetic properties--layer compound
Аннотация: The interplay between the magnetic, electronic, and optical properties and the cation structural ordering in the LaPbMnSbO6 double perovskite is studied using the Vienna Ab Initio Simulation Package (VASP). The layer and rock-salt cation ordering types are investigated. Both of them are of great importance. The rock-salt ordering of B-site cations is one of the most frequently met cation ordering types in double perovskites; the layer ordering of both cations, which can be considered as a heterostructure, is interesting for fundamental research and experimental synthesis. It was established that the properties of the two investigated structures are strongly different. The compound with the layered structure exhibits the behavior typical of a semimetal with the ferromagnetic configuration of magnetic moments, which is unusual for a double perovskite. The rock-salt structure behaves as an antiferromagnetic insulator. Another surprising feature of the structure with the layer ordering is the coexistence of a polar phase and the metal-type conductivity. The calculated optical characteristics of the two ordered structures are compared with the experimental dates. (C) 2016 Elsevier B.V. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drokina T. V., Petrakovskii G. A., Molokeev M. S., Velikanov D. A.
Заглавие : Synthesis, crystal structure, and magnetic properties of the YbFeTi2O7 compound
Место публикации : Phys. Solid State. - 2018. - Vol. 60, Is. 3. - P.532-536. - ISSN 1063-7834, DOI 10.1134/S1063783418030095. - ISSN 1090-6460(eISSN)
Примечания : Cited References:13
Предметные рубрики: STATE
Аннотация: We report on the synthesis conductions and results of experimental investigations of the crystal structure and magnetic properties of a new magnetic compound YbFeTi2O7. According to the X-ray diffractometry data, the crystal structure of the investigated compound is described by the rhombic space group Pcnb with unit cell parameters of a = 9.8115(1) Å, b = 13.5106(2) Å, and c = 7.31302(9) Å and atomic disordering in the distribution of iron ions Fe3+ over five structural sites. The magnetic measurements in the lowtemperature region revealed a kink in the temperature dependence of the magnetic moment and its dependence on the sample magnetic prehistory. The experimental results obtained suggest that with a decrease in temperature the sample passes from the paramagnetic state to the spin-glass-like magnetic state characterized by a freezing temperature of T f = 4.5 K at the preferred antiferromagnetic exchange coupling in the sample spin system. The chemical pressure variation upon replacement of rare-earth ion R by Yb in the RFeTi2O7 system does not change the crystal lattice symmetry and magnetic state.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sofronova S. N., Eremin E. V., Molokeev M. S., Mikhashenok N. V., Kartashev A. V.
Заглавие : Synthesis and structural, magnetic, and thermal properties of the titanium-doped Pb3Mn7O15 compound
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk krai; Krasnoyarsk Territorial Foundation for Support of Scientific and RD Activities [18-42-240007]
Место публикации : Phys. Solid State. - 2021. - Vol. 63, Is. 4. - P.654-659. - ISSN 1063-7834, DOI 10.1134/S1063783421040223. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 10. - This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk krai, and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project no. 18-42-240007
Аннотация: The Pb3Mn7O15 crystals doped with titanium ions have been synthesized. The study of the structural properties has shown that titanium ions occupy positions in the interplane columns, which weakens the exchange coupling between the planes. Two anomalies in the temperature dependences of magnetization and heat capacity at 62 and 35 K have been found. It has been supposed that, at 62 K, the long-range magnetic order arises and, at 35 K, a spin-reorientation transition, as in the Pb3Mn7O15 compound, occurs.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drokina T. V., Petrakovskii G. A., Bayukov O. A., Vorotynov A. M., Velikanov D. A., Molokeev M. S.
Заглавие : Synthesis and structural, magnetic, and resonance properties of the LiCuFe2(VO4)3 compound
Место публикации : Phys. Solid State: Maik Nauka-Interperiodica Publishing, 2016. - Vol. 58, Is. 10. - P.1981-1988. - ISSN 10637834 (ISSN), DOI 10.1134/S1063783416100139
Примечания : Cited References: 15
Аннотация: Complex studies have been performed for the structural, static magnetic, and resonance properties of a new magnet LiCuFe2(VO4)3 prepared by solid-phase synthesis. The temperature dependence of the susceptibility has an anomaly at temperature Tmax = 9.6 K. At high temperatures, the LiCuFe2(VO4)3 sample is in the paramagnetic state described by the Curie–Weiss law at T 50 K and mainly determined by iron ions with effective magnetic moment μeff(exp) = 8.6μB per formula unit. At low temperatures, a long-range magnetic order is observed in the magnetic subsystem of the sample; the order is predominantly characterized by the antiferromagnetic exchange interaction and high frustration level. The exchange interaction parameters are estimated in a six-sublattice representation of the LiCuFe2(VO4)3 magnet. It is shown that the LiCuFe2(VO4)3 compound is an antiferromagnet with strong intrachain and frustrating interchain exchange interactions.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drokina T. V., Velikanov D. A., Bayukov O. A., Molokeev M. S., Petrakovskii G. A.
Заглавие : Synthesis and structural and magnetic properties of the NaNiFe2(VO4)3 compound
Место публикации : Phys. Solid State. - 2021. - Vol. 63, Is. 5. - P.802-810. - ISSN 1063-7834, DOI 10.1134/S1063783421060056. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 19. - We are grateful to V.S. Bondarev for studying the thermal properties of NaNiFe2(VO4)3
Предметные рубрики: LiCuFe2(VO4)3
HOWARDEVANSITE
Аннотация: A new magnetic compound NaNiFe2(VO4)3 has been obtained by the solid-phase synthesis and studied by X-ray diffractometry, nuclear gamma resonance, and magnetometry. The crystal structure of multicomponent vanadate is described by a triclinic symmetry space group P1. The unit cell contains six nonequivalent mixed cationic positions occupied by different-valence ions of transition metals, iron Fe3+ and nickel Ni2+, which facilitates the implementation of a state with the local charge neutrality violation. In addition, two types of iron atom sites have been found, which have an oxygen environment in the form of octahedra and square pyramids with their nonequiprobable population by iron and nickel. The temperature and field dependences of the magnetization have been found to be typical of a paramagnet containing ferromagnetic clusters in a wide temperature range.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Grigorchenko V.M., Molokeev M. S., Oreshonkov A. S., Aleksandrovsky A. S., Kertman A.V., Abulkhaev M.U., Mereshchenko A.S., Yurev I.O., Shulaev N.А., Kamaev D.N., Elyshev A.V., Andreev O.V.
Заглавие : Synthesis and properties of the NdSF compound, phase diagram of the NdF3–Nd2S3 system
Колич.характеристики :9 с
Место публикации : J. Solid State Chem. - 2024. - Vol. 333. - Ст.124640. - ISSN 00224596 (ISSN), DOI 10.1016/j.jssc.2024.124640. - ISSN 1095726X (eISSN)
Примечания : Cited References: 48. - This research was funded by the Tyumen Oblast Government as part of the West-Siberian Interregional Science and Education Center’s project No. 89-DON (3)The studies ab initio simulation of electron band structure, analysis of optical properties, XRD analysis was partially supported by "Priority-2030" program for the Siberian Federal University, and the state assignment of Kirensky Institute of Physics
Аннотация: The NdF3–Nd2S3 system attracts attention of researchers due to the possibility of using LnSF compounds (Ln = rare earth element) as possible new p- and n-type materials. The samples of this system were synthesized from NdF3 and Nd2S3. The NdSF compound belongs to the PbFCl structural type, P4/nmm space group, unit cell parameters: a = 3.9331(20) Å, c = 6.9081(38) Å. The experimentally determined direct and indirect NdSF bandgaps are equal to 2.68 eV and 2.24 eV. The electronic band structure was calculated via DFT simulation. The NdSF compound melts congruently at T = 1385 ± 10°С, ΔНm = 40.5 ± 10 kJ/mol, ΔS = 24.4 ± 10 J/mol. The NdSF microhardness is 455 ± 10 HV. Five phase transformations in the NdF3–Nd2S3 system were recorded by DSC; their balance equations were derived. The liquidus of the system calculated from the Redlich–Kister equation is fully consistent with the DSC data.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Larionov K. V., Popov Z. I., Vysotin M. A., Kvashnin D. G., Sorokin P. B.
Заглавие : Study of the new two-dimensional compound CoC
Коллективы : Russian Science Foundation [17-72-20223]; Ministry of Education and Science of the Russian Federation [14.Y26.31.0005]; Joint Supercomputer Center, Russian Academy of Sciences
Место публикации : JETP Letters. - 2018. - Vol. 108, Is. 1. - P.13-17. - ISSN 0021-3640, DOI 10.1134/S0021364018130106. - ISSN 1090-6487(eISSN)
Примечания : Cited References: 24. - We are grateful to Prof. Gotthard Seifert, Prof. B.P. Sorokin, and Prof. L.A. Chernozatonskii for the discussion of the results. This work was supported by the Russian Science Foundation (project no. 17-72-20223). The calculations were performed with the use of resources of the Computer Cluster, Materials Modeling and Development Laboratory, National University of Science and Technology MISiS (supported by the Ministry of Education and Science of the Russian Federation, project no. 14.Y26.31.0005), and the Joint Supercomputer Center, Russian Academy of Sciences.
Предметные рубрики: TOTAL-ENERGY CALCULATIONS
WAVE BASIS-SET
AB-INITIO
DYNAMICS
Аннотация: A novel quasi-two-dimensional monolayer structure with orthorhombic symmetry based on cobalt carbide, o-CoC, has been considered. This structure supplements a recently discovered family of quasi-two-dimensional compounds based on transition metals. The dynamic stability of a monolayer has been demonstrated. Its mechanical and electronic characteristics have been studied.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vasiliev A. D., Golovnev N. N.
Заглавие : Structure of the oxonium compound of pefloxacinium hexachloridostannate(IV)
Коллективы : Ministry of Education of the Russian Federation [4.7666.2017/BCh]; Siberian Federal University [4.7666.2017/BCh]
Место публикации : J. Struct. Chem. - 2018. - Vol. 59, Is. 3. - P.641-645. - ISSN 0022-4766, DOI 10.1134/S0022476618030198. - ISSN 1573-8779(eISSN)
Примечания : Cited References: 13. - The work was performed within the State Contact of the Ministry of Education of the Russian Federation and the Siberian Federal University in 2017-2019 (4.7666.2017/BCh)
Предметные рубрики: ANTIBACTERIAL AGENTS
QUINOLONE
Ключевые слова (''Своб.индексиров.''): pefloxacinium cation--oxonium cation--chloride ion--hexachloridostannate(iv) anion--ionic compound--crystal structure
Аннотация: The structure of tris{hexachloridostannate(IV)}-hexachloride-tetrakis(pefloxacinium)-tetraoxonium undecahydrate (CCDC 1551760) 4PefH 3 2+ , 4H3O+, 3SnCl 6 2− , 6Cl−, 11H2O (I), (PefH is pefloxacin) is determined. The I crystals are triclinic: a = 13.5474(10) Å, b = 15.2859(11) Å, c = 15.6586(11) Å, α = 94.467(1)°, β = 105.477(1)°, γ = 111.560(1)°, V = 2849.9(4) Å3, space group Pī, Z = 1. The structure is stabilized by multiple intermolecular hydrogen bonds and π–π-interactions between the PefH32+ ions.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aver'yanov E. M.
Заглавие : Structural and thermodynamic consequencies of the interaction of conformational degrees of freedom of azomethines in the nematic phase
Место публикации : J. Struct. Chem.: Springer, 2014. - Vol. 55, Is. 4. - P.605-611. - ISSN 0022-4766, DOI 10.1134/S0022476614040039. - ISSN 1573-8779
Примечания : Cited References: 21
Предметные рубрики: CONJUGATED POLY(AZOMETHINE)S
TERMINAL SUBSTITUENTS
ELECTRONIC-STRUCTURES
FLUORINATED ANALOGS
INTERNAL-ROTATION
MOLECULES
COMPOUND
ANGLES
STATE
NMR
Ключевые слова (''Своб.индексиров.''): azomethines--benzylideneaniline--conformation--steric effects of substituents--nematic-isotropic liquid transition--conformational polymorphism
Аннотация: The interaction of the conformational degrees of freedom of azomethines in the nematic phase, which is induced by electronic donor-acceptor properties of the terminal substituents of the benzylideneaniline core is studied. These degrees of freedom related to the rotation angles phi (k) around the bonds between the substituent and the aniline ring (phi(1)) and also between the CH=N bridge and the aniline ring (omega(2)) are characterized by the parameters Q (k) = aOE (c) cos(2)phi (k) . It is found that the interaction of these degrees of freedom is manifested in the linear dependence Q (2)(Q (1)). Within the phenomenological theory the effect of this interaction on changes delta (k) in the Q (k) values during the nematic liquid crystal-isotropic liquid phase transition is revealed along with the temperature T (NI) and character of this transition. The derivation of previously established empirical dependences T (NI)(Q (k) ) is presented in the presence of direct and indirect steric effects of side substituents affecting the Q (k) values. A diverse combination of delta (k) signs in the nematic phase, which is a prerequisite for the conformational polymorphism of the nematic phases of azomethines, is shown.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Bykova L. E., Yakovchuk V. Yu., Zhigalov V. S., Volochaev M. N., Matsynin A. A., Tambasov I. A., Seredkin V. A., Patrin G. S., Bondarenko G. N.
Заглавие : Structural and magnetic features of solid-phase transformations in Mn/Bi and Bi/Mn films
Место публикации : JETP Letters. - 2016. - Vol. 103, Is. 4. - P.254-259. - ISSN 00213640 (ISSN), DOI 10.1134/S0021364016040111
Примечания : Cited References: 47. - This work was supported by the Russian Foundation for Basic Research (project nos. 15-02-00948 and 16-03-00069), by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. SP-317.2015.1), and by the Foundation for Promotion of the Development of Small Scientific and Engineering Enterprises (project nos. 0011727 and 6662GU2015, program Umnik). The electron microscopy studies were performed on the equipment of the Shared Usage Center, Krasnoyarsk Research Center, Siberian Branch, Russian Academy of Sciences.
Предметные рубрики: High-temperature synthesis
Epitaxial thin-films
State synthesis
Martensitic transformations
Vacuum depositions
MnBi filmsd
Bi
System
Anisotropy
Compound
Аннотация: Solid-phase transformations at different annealing temperatures in Mn/Bi (Mn on Bi) and Bi/Mn (Bi on Mn) films have been studied using X-ray diffraction, electron microscopy, and magnetic measurements. It has been shown that the synthesis of the α-MnBi phase in polycrystalline Mn/Bi films begins at a temperature of ~120°C and the Mn and Bi layers react completely at 300°C. The resulting α-MnBi(001) samples have a large perpendicular magnetic anisotropy (Ku ≃ 1.5 × 107 erg/cm3) and a coercive force H HC ~ 3 kOe. In contrast to Mn/Bi, the ferromagnetic α-MnBi phase in Bi/Mn films is not formed even at annealing processes up to 400°C and Mn clusters are formed in a Bi melt. This asymmetry in phase transformations occurs because chemosorbed oxygen existing on the surface of the Mn film in Bi/Mn films suppresses a solid-phase reaction between Mn and Bi. The analysis of the results obtained implies the existence of new low-temperature (~120°C) structural transformation in the Mn–Bi system. © 2016, Pleiades Publishing, Inc.
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16.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Arauzo A., Bartolomé J., Drokina T. V., Petrakovskii G. A., Molokeev M. S.
Заглавие : Spin glass magnetic behavior in GdFeTi2O7 compound
Коллективы : Moscow International Symposium on Magnetism, Московский государственный университет им. М.В. Ломоносова, Российский фонд фундаментальных исследований
Место публикации : Moscow International Symposium on Magnetism (MISM-2017): 1-7 July 2017 : book of abstracts. - 2017. - Ст.4PO-I1-34. - P.889 (Шифр 29916280)
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drokina T. V., Petrakovskii G. A., Molokeev M. S., Velikanov D. A., Pletnev N. O., Bayukov O. A.
Заглавие : Specific features of the crystal structure and magnetic properties of the DyFeTi2O7 compound
Место публикации : Phys. Solid State. - 2013. - Vol. 55, Is. 10. - P.2037-2042. - ISSN 1063-7834, DOI 10.1134/S1063783413100107
Аннотация: Results of studying the specific features of formation of the crystal structure and distribution of iron cations over the sites in the DyFeTi2O7 compound have been presented and the comparison with the GdGaTi2O7 isostructural compound has been performed. The atomic disorder in the distribution of the Fe3+ ions over structural sites in the DyFeTi2O7 compound is confirmed by the Mossbauer spectroscopy and X-ray diffractometry. The results of magnetic measurements in the low-temperature region have revealed an inflection point in the temperature dependence of the magnetic moment and its dependence on the magnetic prehistory of the sample. The obtained experimental data suggest that there is a spin glass state with freezing point Tf = 6 K in the DyFeTi2O7 compound. В© 2013 Pleiades Publishing, Ltd.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drokina T. V., Petrakovskii G. A., Velikanov D. A., Molokeev M. S.
Заглавие : Specific features of magnetic ordering in the SmFeGe2O7 compound
Место публикации : Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2014. - Vol. 56, Is. 6. - P.1131-1136. - ISSN 1063-7834, DOI 10.1134/S1063783414060122. - ISSN 1090-6460
Примечания : Cited References: 10
Предметные рубрики: NEUTRON-DIFFRACTION
PR
FERGE2O7
R=LA
Аннотация: The results of the experimental investigation of the magnetic properties of the SmFeGe2O7 compound have been presented. It has been found that the temperature dependence of the susceptibility exhibits two features that coincide with the anomalies in the temperature dependence of the specific heat and indicate magnetic phase transitions in SmFeGe2O7. The external magnetic field induces a magnetic transition, the critical field of which depends on the temperature.
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19.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Bykova L. E., Myagkov V. G., Yakovchuk V. Yu., Zhigalov V. S., Volochaev M. N., Мацынин, Алексей Александрович, Tambasov I. A., Patrin G. S., Bondarenko G. N.
Заглавие : Solid-state transformations in Mn/Bi and Bi/Mn nanofilms: structural and magnetic properties
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016): abstracts/ ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk: KIP RAS SB, 2016. - Ст.P10.1. - P.469. - ISBN 978-5-904603-06-9 (Шифр -478014040)
Примечания : References: 1. - This study was supported by the RFBR (grants ## 15-02-00948, 16-03-00069) and partially by «UMNIK» program
Ключевые слова (''Своб.индексиров.''): solid-state transformation--compound mnbi--magnetic anisotropy--nanofilms
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drokina T. V., Petrakovskii G. A., Bayukov O. A., Molokeev M. S., Bartolome J., Arauzo A.
Заглавие : Role of Fe magnetic subsystems to form a magnetic spin glass state in RFeTi2O7
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН , project MECOM [MAT2014-53921-R]; project DGA [IMANA E34]
Место публикации : J. Magn. Magn. Mater.: Elsevier Science, 2017. - Vol. 440. - P.41-43. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2016.12.088. - ISSN 1873-4766(eISSN)
Примечания : Cited References:6. - This work has been partially financed by projects MECOM (MAT2014-53921-R) and DGA (IMANA E34)
Предметные рубрики: COMPOUND
Ключевые слова (''Своб.индексиров.''): oxide materials--solid state reaction--cation substitution--spin glasses
Аннотация: The experimental studies on R3+Fe3+Ti2O7 (R=Sm, Gd, Tb, Tm, Dy) magnetic properties evidence the low temperature spin glass state in all compounds. The possibility of rare-earth cation substitution allows the investigation of the role of magnetic iron Fe3+ ions and rare earth R3+ ions subsystems in a ground state formation in these oxide compounds.
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