Chromium studies near the antiferromagnetic to paramagnetic transition. by Bengt Stebler

Cover of: Chromium studies near the antiferromagnetic to paramagnetic transition. | Bengt Stebler

Published by Universitetet, Almqvist & Wiksell, (distr.) in Göteborg, Stockholm .

Written in English

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Subjects:

  • Antiferromagnetism.,
  • Chromium.,
  • Paramagnetism.

Edition Notes

Book details

SeriesAbstracts of Gothenburg dissertations in science,, 19, Acta Universitatis Gothoburgensis.
Classifications
LC ClassificationsQ64 .A6 no. 19
The Physical Object
Pagination(1), 20, (5) p.
Number of Pages20
ID Numbers
Open LibraryOL4792459M
LC Control Number75513418

Download Chromium studies near the antiferromagnetic to paramagnetic transition.

Chromium is a chemical element with the symbol Cr and atomic number It is the first element in group is a steely-grey, lustrous, hard and brittle transition metal. Chromium is the main additive in stainless steel, to which it adds anti-corrosive um is also highly valued as a metal that is able to be highly polished while resisting : group 6.

X-ray Microdiffraction Images of Antiferromagnetic Domain Evolution in Chromium Article (PDF Available) in Science () March with 33 Reads How we measure 'reads'. A holographic description on antiferromagnetic quantum phase transition (QPT) induced by magnetic field and the criticality in the vicinity of quantum critical point (QCP) have been investigated.

The diamagnetic shift of excitons is a convenient means to evaluate the exciton wave-function extension also for quantum wires. Figure 46 shows the diamagnetic shift of excitons in GaAs quantum wires observed in the PL spectra for different directions of magnetic fields (Nagamune et al., ).The GaAs quantum wires were fabricated in a saw-tooth-shaped V-groove at the bottoms of valleys in.

Low concentrations of paramagnetic transition metal or rare earth ions often found in commercial glasses are ideal spin probes to explore the local structural disorder intrinsic to these materials.

Investigations of the EPR spectra of glasses have raised the question as to the whether the spin Hamiltonian model provides a valid basis for. In physics and materials science, the Curie temperature (T C), or Curie point, is the temperature above which certain materials lose their permanent magnetic Chromium studies near the antiferromagnetic to paramagnetic transition.

book, which can (in most cases) be replaced by induced Curie temperature is named after Pierre Curie, who showed that magnetism was lost at a critical temperature.

The force of magnetism is determined by the magnetic. The compound SrCo 2 As 2 with the body-centered tetragonal ThCr 2 Si 2 structure is known to remain paramagnetic down to a temperature T = K, but inelastic neutron scattering studies have shown that both ferromagnetic (FM) and antiferromagnetic (AFM) fluctuations occur in single crystals.

Thus it is of interest to study how the magnetism evolves on doping SrCo 2 As : Willie Williams Jr. The compound SrCo 2 As 2 with the body-centered tetragonal ThCr 2 Si 2 structure is known to remain paramagnetic down to a temperature T = K, but inelastic neutron scattering studies have shown that both ferromagnetic (FM) and antiferromagnetic (AFM) fluctuations occur in single crystals.

Thus it is of interest to study how the magnetism evolves on doping SrCo 2 As 2. Past studies of problematic DFT behavior for the chromium dimer were frustrated by intrusion of electronically excited locally low-spin states of the Cr(III) ions in the analysis.

The nature of the antiferromagnetic coupling in the chromium dimer was investigated with a variety of by: 4. {{#invoke:Hatnote|hatnote}} Template:Infobox chromium Chromium is a chemical element with symbol Cr and atomic number It is the first element in Group is a steely-gray, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.

The name of the element is derived from the Greek word χρῶμα, chrōma, meaning colour, because many of. Magnetic measurements revealed that Pr Eu Co 2 P 2 exhibits FM ordering at T C = (2) K (Figure 2), which, judging by the high Curie temperature, is attributed to the ordering of the Co ferromagnetic transition is rather surprising, if we recall the aforementioned antiferromagnetism of both PrCo 2 P 2 and the HP form of EuCo 2 P more striking is the fact Cited by: Binary transition metal halides M X y (M = metal cation, X = halogen anion) provide a rich family of materials in which low dimensional magnetism can be examined, and such studies were carried out through much of the last century [].The dihalides contain triangular nets of transition metal cations, and geometrical frustration is expected when the magnetic interactions are antiferromagnetic Cited by: The band structure of paramagnetic NiO in Figure 1 is calculated by the FHI-aims (“Fritz Haber Institute ab initio molecular simulations”) computer program using the density functional theory (DFT) [7,8] to compute the total energy in the electronic ground NHM does require the exact total E (k) curves of the electrons, but only a more qualitative run of the energy : Ekkehard Krüger.

Full text of "Magnetism And The Chemical Bond" See other formats. Diamagnetic Paramagnetic Ferromagnetic Antiferromagnetic Ferrimagnetic Piezoelectricity Pyroelectricity Ferroelectricity Antiferroelectricity Superconductivity Trouton’s Law and Clausius Clapeyron equation Fluidity Normal and Inverse Spinel Structure Berthollides Guldberg’s Rule Posts from SKM Classes.

Travel Blog of Aradhana and. Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in multilayers composed of alternating ferromagnetic and non-magnetic conductive layers.

The Nobel Prize in Physics was awarded to Albert Fert and Peter Grünberg for the discovery of GMR. The effect is observed as a significant change in the electrical resistance depending on whether the.

A first order double helical magnetic transition occurs at about K accompanied with discontinuous changes of lattice parameters. The antiferromagnetic fluctuations seem to be abundant above T N in that the magnetic susceptibility of CrAs keeps increasing with temperature up to at least K under ambient : Wei Wu, JianLin Luo.

Studying the ferromagnetic–paramagnetic phase transition in thin films of L1 0 FePt 1 Mössbauer analysis of the solid-phase mechanical synthesis of nitrogen chromium-nickel and chromium-manganese austenite. Mössbauer studies of the near-surface layers of 20KhGNM steel after high-temperature plasma treatment.

Abstract. In this lecture we would like to demonstrate that the magnetisation and magnetostriction studies in the vicinity of orientation phase transitions in antiferromagnets, induced by a magnetic field (the so-called spin-flop transition), supplemented by the data on the pressure dependences of the transition field H c, Neel temperature T N and Curie temperature Θ, may elucidate the nature Author: V.

Eremenko, V. Sirenko. Together with the recent ultra-high resolution crystallographic studies in our department [23] a near complete understanding of the [NiFe] hydrogenase catalytic cycle is within reach.

With the Department Schlögl Heterogeneous Catalysis we have started to set up EPR experiments to detect paramagnetic species in photocatalysis. superconductivity features near room temperature in linbo 3:mg co–doped with cr or fe.

new structural aspects related to twinning of the ybco superconductors. electronic structure of point defects in antiferromagnetic insulating cuprates. neutron irradiation damage effect on superconducting transition in yba 2 cu 3 o 7-δ ceramics.

excitons. Electron-Electron Interactions in the Anderson-Localised Regime near the Metal Insulator Transition (Book) H. Kamimura in "Electron-Electron Interaction in Disordered Systems", edited by M.

Pollak and A.L. Efros, in the series of Modern Problems in Condensed Matter Sciences (North-Holland, Amsterdam, ) pp. In this work, a variety of transition-metal complexes incorporating anionic ligands with certain similar structural characteristics were synthesised and examined.

The compounds were characterised by IR and UV/VIS/NIR spectroscopy, thermogravimetric analysis, elemental analysis, variable-temperature magnetic susceptibility, and, where possible, also by single-crystal X-ray analysis or X-ray.

Abstract Purpose: To introduce an analytical method for a quantitative determination of magnetic force on a coronary stent in the magnetic resonance imaging (MRI) magnet that is generally applicabl Cited by: 5.

Lei Qin, Jared Singleton, Wei-Peng Chen, Hiroyuki Nojiri, Larry Engelhardt, Richard E. Winpenny, Yan-Zhen Zheng, Quantum Monte Carlo Simulations and High-Field Magnetization Studies of Antiferromagnetic Interactions in a Giant Hetero-Spin Ring, Angew.

Chem. Int. Full text of "Materials studies for magnetic fusion energy applications at low temperatures - II" See other formats. The Paramagnetic Chromium Centre in Ferroelectric Triglycine Sulphate Crystals: A Molecular Orbital Theory Study Observation of Excitation of the Antiferromagnetic Mode in the Paramagnetic State of (C2H5NH3)2CuCl4 Magnetic Resonance and Related Phenomena Book Subtitle Proceedings of the XXth Congress AMPERE, Tallinn, August 21– N.

Kanchanavatee, B. White, V. Burnett, and M. Maple, "Enhancement of the hidden order/large moment antiferromagnetic transition temperature in the URu 2-x Os x Si 2 system," Philosophical Magaz () (11 pages) Research Article Link.

Weiwei Lin and C. Chien, “Electrical Detection of Spin Backflow from an Antiferromagnetic Insulator/Y3Fe5O12 Interface,” Phys. Rev. Lett. (). The physical and chemical properties of transition metal oxides can be changed dramatically because the transition metal elements can have different oxidation states.

The Cr atom has a 4s1 3d5 configuration. Chromium, with different valence charges, forms different chromium oxides, such as. View Dariya Savchenko’s professional profile on LinkedIn. LinkedIn is the world's largest business network, helping professionals like Dariya Savchenko discover inside connections to recommended.

the academic year ISSP (Institute for Solid State Physics) was established in as a joint-use research institution attached to the University of Tokyo. Since then both in-house research and collabora-tion with external users have been essential elements of the activities of Size: 28MB.

"Ageing Materials Evaluation and Studies by Non-Destructive Techniques". 'Proc. Joint EC-IAEA Specialists Meeting 'NDT Methods for Materials Degradation', Petten, Marchp; L. Debarberis, M.T.

Hutchings, and many others. Report on AMES-NDT CEC Project. The present investigation was concerned with a study of the preparation and properties of chromium tetrafluoride and its complexes; magnetic properties and X-ray structures were also studied.

Attempts to prepare the pentafluoride of chromium using fluorinating agents other than fluorine were unsuccessful. Chromium tetrafluoride was prepared by the action of fluorine on the heated metal, the. Structural flexibility is a remarkable characteristic of coordination polymers and significant for the attainment of environmental responsivity.

We have prepared a 2D cyanide-bridged MnIICrIII coordination polymer, [Mn(NNdmenH)(H2O)][Cr(CN)6]H2O (1; NNdmen = N,N-dimethylethylenediamine), with sophisticatedly arranged removable water by: Notes Abstract: Synthetic and spectroscopic studies on several complexes in the metal carboxylate series are described.

These complexes are of general formula M 2 (02CR) 4 where M is a transition metal and "0 2 CR is a bridging carboxylate ligand.

Dalal, N. Electron Paramagnetic Resonance Detection of the Electric Field Effects on the Nucleation of the Ferroelectric Phase of KD2PO4. Journal of the American Chemical Society (Communication),Dalal, N. EPR and ENDOR Studies of the Slow Dynamics and the Central Peak Phenomenon Near Phase Transitions.

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Free ebooks since Synopsis. We report the synthesis and temperature-dependent studies of a perovskite metal formate framework of [NH 2-CH +-NH 2][Mn(HCOO) 3].This compound undergoes a slightly first-order phase transition at around K associated with ordering of the FMD + cations and symmetry change from R3̅c to C2/ contrast to closely related multiferroic [(CH 3) 2 NH 2][Mn(HCOO) 3], the phase Cited by: A highly distorted high spin Fe(II)-complex, [Fe(1-BPP-COOC2H5)2](ClO4)2CH3CN, with a trans-N(pyridine)–Fe–N(pyridine) angle (ϕ) of (17)° showed lattice solvent dependent bi-stable spin-state switching characteristics with T1/2 = ca.

K and a high thermal hysteresis width (ΔT) of K, for the first cooling and heating cycle, unprecedented for the [Fe(BPP)2]2+ series of.

Main Relationship of Structural and Electronic Properties in Transition Metal Oxides [thesis] antiferromagnetic orbitals component sample properties electrons samples temperatures Post a Review You can write a book review and share your experiences.

Other readers will always be interested in your opinion of.Publications Our publications are searchable from this page, including peer-reviewed publications, book chapters, conference proceedings and Berkeley Lab reports.

Publications.Crystalline Electric Field and Structural Effects in f-Electron Systems K. W. H. Stevens (auth.), Jack E. Crow, Robert P. Guertin, Ted W. Mihalisin (eds.) Perhaps the title of this conference "Ctystalline Electric Field and Structural Effects in f-Electron Systems" reflects best the growth and direction of the field.

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