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4 edition of Mössbauer analysis of the atom and magnetic structure of alloys found in the catalog.

Mössbauer analysis of the atom and magnetic structure of alloys

V. V. Ovchinnikov

Mössbauer analysis of the atom and magnetic structure of alloys

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  • 32 Currently reading

Published by Cambridge International Science Pub. in Cambridge .
Written in English

    Subjects:
  • Mössbauer effect.,
  • Alloys.,
  • Mössbauer spectroscopy.

  • Edition Notes

    StatementV.V. Ovchinnikov.
    The Physical Object
    Paginationxix, 248 p. :
    Number of Pages248
    ID Numbers
    Open LibraryOL22747602M
    ISBN 101904602134

      57 Fe Mössbauer and magnetic measurements are reported on Taylor phase compounds T-Al 3 (Mn,Fe), which can be seen as complex metallic alloys. The orthorhombic unit cell contains atoms. These investigations are further extended to Al 71 Mn 19 Fe 10 crystallizing as a decagonal quasicrystal. Common to both structures are layers, which are oriented perpendicular to the b axis in . Get this from a library! ICAME proceedings of the 28th International Conference on the Applications of the Mössbauer Effect (ICAME ) held in Montpellier, France, September , Volume I (Part I-II/V). [P -E Lippens; J -C Jumas; J -M R Génin;] -- This book provides an up-to-date overview of the Mössbauer effect in physics, chemistry, electrochemistry, catalysis, biology. Ge-Sn alloys prepared at low temperature were reported by Temkin, Connel, and Pau In previous publications the present authors discussed the structure and composition of unhydrogenated a-Ge-Sn films 7 and the semiconductor properties of hydrogenated germanium-tin alloys!! deposited at "C. many steels. The Mössbauer spectroscopy is a common tool to search for the microscopic properties of such alloys. Hence, it is important to learn about d impurity influence on the iron hyperfine parameters versus distance between impurity and iron atom. There are plenty binary alloys basing on the α-Fe BCC structure with many diluted impuritiesCited by:

    For all the CO/CO 2 ratios, as temperature increase the % conversion of hematite in red mud to magnetite increases. A similar trend is observed on increasing the CO/CO 2 ratios. Reduction at oC, CO: CO 2 = and a reduction time of 20 min were chosen as optimum. In addition the presence of some cementite peaks were seen ( wt %).


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Mössbauer analysis of the atom and magnetic structure of alloys by V. V. Ovchinnikov Download PDF EPUB FB2

Mössbauer analysis of the atom and magnetic structure of alloys. Cambridge: Cambridge International Science Pub., (OCoLC) Material Type: Document, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors: V V Ovchinnikov. The monograph indicates the key problems that have to be solved for the further development of the Mossbauer methods for analysis of the nuclear and magnetic structure of alloys, and offer solution variants for some Mössbauer analysis of the atom and magnetic structure of alloys book these problems based on the generalised results of a wide range of theoretical and experimental investigations, including original work by the author of the book and his colleagues.

V V Ovchinnikov - Mossbauer analysis of the atomic and magnetic structure of alloys ( Cambridge International Science Publishi).pdf.

For a collinear model of magnetic structure of the alloy, the calculation of the probabilities of such configurations in terms of the binomial distribution gives the values –, which are close to the experimental value of (3).

In summary, we have studied the features of the hyperfine field distribution in the Fe–Mn Invar by: 2. Mössbauer spectroscopy, DSC and magnetic measurements have been used to study the influence of B and P on structural; magnetic properties and thermal stability of cast iron based alloys.

The rf–Mössbauer spectra recorded for alloys with different M substitutions were compared. As an example, the spectra of the samples annealed at similar temperatures and recorded during the exposure to the rf field of the same intensity (16 Oe) are shown in Fig.

spectra recorded in the absence of the rf field (Fig. 2a–e) reveal similar relative fractions of the bcc–Fe phase in all Cited by: 7. Structure and phase composition as well as fine magnetic structure of mechanically alloyed (MA) FexNix compositions (x=10, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 50, 60, 70, 80, 90 at.

The saturation magnetization and the hyperfine magnetic field of different f.c.c. Fe-Ni based alloys containing nearby 29 at. % Ni were studied as a Cited by: 2. The experimental data from Mossbauer spectroscopy and magnetic measurements are presented as functions of the temperature and external magnetic field for a B2-type ordered Fe 66Al 34 alloy.

Mössbauer spectroscopy study of spin structure and its in-field and temperature dynamics in B2 ordered Fe(Al) alloys | SpringerLinkCited by: 2. The structure of amorphous alloys still has not been described satisfactorily due to the lack of direct methods for observing structural defects.

The magnetizing process of amorphous alloys is closely related to its disordered structure. The sensitivity of the magnetization vector to any heterogeneity allows indirect assessment of the structure of amorphous ferromagnetic : Bartłomiej Jeż, Jerzy Wysłocki, Simon Walters, Przemysław Postawa, Marcin Nabiałek.

1 Mössbauer spectroscopy evidence for the lack of iron magnetic moment in superconducting FeSe A. Błachowski1, K. Ruebenbauer1*, J. Żukrowski2, J.

Przewoźnik2, K. Wojciechowski3, and Z. Stadnik4 1Mössbauer Spectroscopy Division, Institute of Physics, Pedagogical University PL Cracow, by: For instance, using hyperfine magnetic field distributions from Mössbauer spectroscopy, they observed an interesting size effect in nanophase Fe 3 Ge alloys wherein the bcc structure with smaller Gibbs free energy was stabilized for small size and the equilibrium fcc phase was seen only beyond a critical crystallite size.

Similarly, they have. The paper summarizes the systematic magnetic study of full Heusler Fe 2 MnZ alloys crystallizing in L2 1 structure prepared in two compositions and using two different technological procedures. The composition differs in Z atom being either Si or Al.

Mössbauer Spectroscopy is a very useful techniques to quantitatively investiagte various issues pertinent to Fe-Cr alloys, and in particular: • Magnetic ordering temperatures • Short-rane ordering • Borders of misceptibility gap • Sigma-phase identification and its kinetics.

Hyperfine interactions of 57Fe nuclei in FexNix nanostructures synthesized in polymer ion-track membranes were studied by Mössbauer spectroscopy. The main part of obtained nanostructures was FexNix nanotubes with bcc structure for 0 ≤ x ≤ 40, and with fcc structure for 50 ≤ x ≤ The length, outside diameter and wall thickness of nanotubes were 12 μm, ± 10 nm Cited by: 7.

@article{osti_, title = {Ultra-soft magnetic properties and correlated phase analysis by {sup 57}Fe Mössbauer spectroscopy of Fe{sub 74}Cu{sub }Nb{sub }Si{sub }B{sub 7} alloy}, author = {Manjura Hoque, S. and Liba, S. and Akhter, Shireen and Anirban, A.

and Choudhury, Shamima}, abstractNote = {A detailed study of magnetic softness has been performed on FINEMENT type of. Mössbauer measurements using Fe 57 were made on the Fe–Be system in the composition range between 66 and 85 at.

% Be. The internal field and the isomer shift in FeBe 2 (% Be, MgZn 2 structure) are ±5 kOe and ± mm/sec, respectively. A metallic iron standard at room temperature was used. The Mössbauer spectrum of a single crystal of FeBe 2 shows that the Cited by: 8 Mössbauer Spectroscopy is one of the most relevant techniques to study Fe-Cr Alloys Néel temperaure Spin-glass freezing temperature Re-entrance transition Curie temperature Debye temperature (SOD, f) Spin- and charge-density changes Identification of, and phases Kinetics of phase formation e.

Short-range ordering (SRO). related topics of dilute and disordered alloys and impurity studies is reported elsewhere in these pro- ceedings. Frozen solutions [7], surfaces and fine par- ticles [8] and magnetic dead layers [9] have all been reviewed within the last few years.

A new book [lo]. This field is generated by its own atom electrons (the Zeeman effect) or by external sources. The magnetic structure is always absent at the nuclear levels whose spins are zero.

In the Mössbauer effect, the γ-transitions between the two nuclear levels are observed. Any of these levels can have a magnetic hyperfine : K.M. Mukashev, A.K. Shokanov, F.F. Umarov. Magnetic Properties of Nanocrystalline Fe, Ni(Fe) and Fe(Si) Alloys p Mössbauer Study of Amorphous and Nanocrytalline Fe-Nb-B AlloysCited by: 4.

useful electrical, dielectric and magnetic properties. Magnetic properties of spinel ferrite depend on distribution of cations among two sub-lattices, tetrahedral A-site and octahedral B- site [2, 3].

In Mg-Mn ferrite, if Fe3+ ions are replaced by In3+ ions and Al3+ ions, magnetic properties are modified []. Mössbauer studies in Hungary were started by L.

Keszthelyi and I. Dézsi in In November of this year, the effect on 57 Fe was observed and presented. We intended to discover a new Mössbauer nucleus by choosing Tb.

Using a Gd source prepared in the research reactor of the predecessor institute KFKI, the effort was successful. We observed first the Mössbauer transition on this. Nanocrystalline Fe-Si-B-Nb-Cu alloys and their magnetic properties.

The investigations were carried out using Fe X Si X B 9 Nb 3 Cu 1 alloys (X = 0, 4, 6, 8,11, ) on samples in the form of ribbons 20 mcm thick and 1 mm wide obtained in the initial amorphous state by melt-spinning technique, where a molten metal alloy is ejected through an orifice onto a rotating copper : Nikolay V.

Ershov, Yuri P. Chernenkov, Vladimir I. Fedorov, Vera A. Lukshina, Nadezda M. Kleinerman. The effects of disorder on the magnetic properties of Co{sub 2}FeAl alloy are reported.

X-ray diffraction exhibit A2-type disordered structure. Room temperature Mössbauer studies show the presence of two sextets with hyperfine field values of 31T and 30T along with a nonmagnetic singlet.

The Author: Jain, Vishal. The bcc phase of Fe‐Mn alloys was studied by means of the Mössbauer effect, x‐ray diffraction, thermogravimetry analysis, and magnetization measurements for Mn concent‐ rations up to at.%.

These alloys are disordered over this composition range and both the average hyperfine field and critical temperature (T c) decrease with increasing Mn by:   Magnetic and 57Fe Mössbauer measurements are reported on Taylor-phase compounds T-Al3Mn(Pd,Fe), which are complex metallic alloys containing atoms in the unit cell.

These investigations are extended to Al71Mn19Fe10 which crystallize as decagonal quasicrystal. Common for all samples spin glass behavior is present at low temperatures with freezing temperatures Tf Cited by: 2.

Structural information and phase composition were extracted from Rietveld refinement of the XRD data. Values of the magnetization at saturation measured at 40 kOe and 25 °C of emu/g for α″-Fe 16 N 2 and emu/g for metallic iron were obtained via magnetic.

Purchase Rapidly Quenched Metals - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1. Two Mössbauer parameters—chemical shift and quadrupole splitting—can provide information about the bonding between the metal atom and its ligands, structure of the metal ligand complex, and the oxidation state of the metal.

The oxidation state in iron and tin inorganic. Mössbauer spectroscopy is a high sensitivity technique which provides information on Fe alloys not accessible by other characterization tools such as X-ray diffraction or metallographic analysis.

It is particularly useful to distinguish the matrix component phases (martensite, ferrite) from the parent austenite phase in steels, because the Cited by: 2.

Mössbauer Analysis of the Atomic and Magnetic Structure of Alloys Table Values of the probabilities of the atoms of Fe being surrounded by atoms of Cr for the quenched alloy Fe + % at.% Cr determined on the basis of analysis of the type of functions P(x) and calculated for α 1 = α 2 = 0 P(l1, l2) (c a lc ula te d fo r P(x) l1/l2.

J Chem Phys. May 15;48(10) Mössbauer studies of the iron atom in cytochrome c. Cooke R, Debrunner P. PMID: [PubMed - indexed for MEDLINE]Cited by: Mössbauer spectroscopy is sensitive to the perturbation of charge and spin density on the resonant nucleus via modification of the isomer shift and magnetic hyperfine coupling, respectively [1, 2].

The latter coupling is described by the effective hyperfine magnetic field. The crystal structure and magnetic properties of Fe Ni Al Si 1 alloy underwent three different heat treatments were investigated by scanning (SEM) and transmission (TEM) electron microscopy, X-ray diffraction, Mössbauer spectroscopy and magnetostatic methods.

The. The pyrite structure. Magnetic structures of MnS 2, MnSe2 and MnTe 2 and planes A, B, A and B as determined by Hastings et al. (l). Black and white spheres represent oppos1te. sp1n d' 1rec t' 1ons o e n f th M 2+ ' 1ons. Magnetic structure of MnTe2 as determined by. The Mössbauer spectra measured in zero field and in the magnetic field of B = T applied parallel to the gamma beam are presented in Figs.

1a and 1b, respectively. The spectra were fitted with a sum of sextets broadened by the Gaussian distribution of magnetic hyperfine field, and a single line, if necessary. Types of Material actinide alloys and compounds amorphous materials ceramics clusters coating materials composite materials data storage materials disordered systems electrode materials energy storage materials ferroelectrics fuel cells fullerenes half metals heterojunctions high-temperature alloys high-Tc superconductors hydrogen absorbing.

This two-volume book provides an overview of physical techniques used to characterize the structure of solid materials, on the one hand, and to investigate the reactivity of their surface, on the other. Therefore this book is a must-have for anyone working in fields related to surface reactivity.

Among the latter, and because of its most important industrial impact, catalysis has been used as. The Lamb-Mössbauer factor, the kinetic energy per resonant atom, and the average force constant of the resonant atom can be calculated either as moments of the measured S(k,E) or from the phonon DOS (Lipkin, ; Chumakov and Sturhahn, ; Sturhahn and Chumakov, ).

In addition, proper normalization and the positiveness of the phonon DOS. The chemical states of tin and iron atoms were investigated by Mössbauer spectroscopy on oxide films (of various thicknesses) formed on a Zr% Sn-1% Fe% Cr% O alloy (enriched with Sn and 57 Fe) in an autoclave at K with 10 ppm Li and ppm B.

Specimens were analyzed by Conversion Electron Mössbauer Spectroscopy (T = K) and γ-ray transmission (T = and 77 K Cited by: Atom-thick alloys created with unexpected magnetic properties Substituting atoms in the process of making two-dimensional alloys not only allows them to be customized for applications but also can make them magnetic, according to Rice University scientists and their collaborators.Sir Nevill Francis Mott CH FRS (30 September – 8 August ) was a British physicist who won the Nobel Prize for Physics in for his work on the electronic structure of magnetic and disordered systems, especially amorphous award was shared with Philip W.

Anderson and J. H. Van three had conducted loosely related mater: University of Cambridge.