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Tuesday, July 21, 2020 | History

2 edition of Neutron scattering on single crystals of Cu1-x(Zn/Ni)xGeO3 and other exotic low dimensional systems found in the catalog.

Neutron scattering on single crystals of Cu1-x(Zn/Ni)xGeO3 and other exotic low dimensional systems

S. Coad

Neutron scattering on single crystals of Cu1-x(Zn/Ni)xGeO3 and other exotic low dimensional systems

by S. Coad

  • 211 Want to read
  • 8 Currently reading

Published by typescript in [s.l.] .
Written in English


Edition Notes

Thesis (Ph.D.) - University of Warwick, 1997.

StatementS. Coad.
The Physical Object
Pagination240p.
Number of Pages240
ID Numbers
Open LibraryOL17470741M

Part of the NATO ASI Series book series (ASIC, volume ) Log in to check access. Buy eBook. USD Instant download Applications of Neutron Scattering in Chemistry. Pulsed and Continuous Sources in Comparison Pages Single Crystal Pulsed Neutron Diffraction. Single Crystal Pulsed Neutron Diffraction. J. B. Forsyth. Pages Neutron scattering, the irregular dispersal of free neutrons by matter, can refer to either the naturally occurring physical process itself or to the man-made experimental techniques that use the natural process for investigating materials. The natural/physical phenomenon is of elemental importance in nuclear engineering and the nuclear sciences.. Regarding the experimental technique.

This important book presents a comprehensive account of the techniques and applications of single crystal neutron diffraction in the area of chemical crystallography and molecular structure. Beginning with a brief description of the general principles and the reasons for choosing the technique — the “why” — the book covers the methods. Neutron diffraction studies of PIN-PMN-PT single crystals reveal changes in metric symmetry as a function of temperature, electrical poling as well as mechanical stress. It is found that a uniaxial stress longitudinally applied along the [] direction induces a metastable orthorhombic phase out of the initial pseudo-rhombohedral phase at.

Neutron crystallography has had an important, but relatively small role in structural biology over the years. In this review of recently determined neutron structures, a theme emerges of a field currently expanding beyond its traditional boundaries, to address larger and more complex problems, with smaller samples and shorter data collection times, and employing more sophisticated structure. Neutron Scattering. One of the greatest features of neutron scattering is that neutrons are scattered by every single atomic nucleus in the material whereas in X-ray studies, these are scattered by the electron density. In addition, neutron can be scattered by the magnetic moment of the atoms.


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Neutron scattering on single crystals of Cu1-x(Zn/Ni)xGeO3 and other exotic low dimensional systems by S. Coad Download PDF EPUB FB2

@article{osti_, title = {Single Crystal Diffuse Neutron Scattering}, author = {Welberry, Richard and Whitfield, Ross}, abstractNote = {Diffuse neutron scattering has become a valuable tool for investigating local structure in materials ranging from organic molecular crystals containing only light atoms to piezo-ceramics that frequently contain heavy elements.

A recent study of the magnetic susceptibility in single crystals of the spin-Peierls material CuGeO 3 doped with Zn indicates antiferromagnetic order at low temperatures.

In the present publication, we report a neutron scattering investigation of the static and dynamic magnetic properties of single-crystal Cu Zn GeO the transition temperature of ± K, sharp Cited by: This classic text provides the basic quantum theory of thermal neutron scattering and applies the concepts to scattering by crystals, liquids and magnetic systems.

Other topics discussed are the relation of the scattering to correlation functions in the scattering system, the dynamical theory of scattering and polarisation by:   The first systematic experiments in neutron scattering were carried out in the late s using fission reactors built for the nuclear power programme.

Crystallographers were amongst the first to exploit the new technique, but they were soon followed by condensed matter physicists and chemists. Engineers and biologists are the most recent recruits to the club of neutron users.

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Comprehensive neutron scattering studies were carried out on a series of high-quality single crystals of Cu1−xZnxGeO3. The Zn concentration, x, was determined for each sample using Electron Probe Micro-Analysis.

The measured Zn concentrations were found to be % lower than the nominal values. Small-angle neutron scattering (SANS) data from single-crystal metastable β-Ti alloys exhibit an anisotropic character with interparticle interference maxima due to. Neutron diffraction measurements on KHF2 single crystals show that the hydrogen atom occupies the central position, within å, in the linear F—H—F ion.

The data also indicate asymmetry in thermal motion, which suggests that the bifluoride ion undergoes rotatory oscillation with appreciable amplitude. Neutrons -- Scattering.

Solid state chemistry. neutrons scattering quasi-elastic; Contents. Survey of the book. General aspects of neutron scattering. Instruments and methods in cold neutron scattering.

Multiple scattering efects. Long range translational diffusion. Molecular reorientations in orientationally disordered crystals. Book Search tips Selecting this option will search all publications across the Scitation platform Selecting this option will search all publications for the Publisher/Society in context.

3D scanning and 3D printing AlSi10Mg single crystal mounts for neutron scattering Review of Scientific Instrume (). Measure some of the neutrons all of the time single wavelength chopper source collimation scattering detection time intensity at source intensity at detector time NEUTRON SCATTERING LENGTHS AND CROSS SECTIONS.

Case of D 2 O: Mass m D2O = 20 g/mole, Density d D2O = g/cm3. Specific Volume = v D2O = m D2O /d. Neutron and x-ray scattering studies of the lightly doped spin-Peierls system Cu1-xCdxGeO3 Published. Journal Article. Single crystals of the lightly doped spin-Peierls system Cu 1-xCdxGeO3 have been studied using bulk susceptibility, x-ray diffraction, and inelastic neutron scattering techniques.

We investigate the triplet gap in the magnetic. Neutron scattering measurements on single-crystal samples of the mineral herbertsmithite, which is a spin-1/2 kagome-lattice antiferromagnet, provide evidence of fractionalized spin excitations at.

Pokrovsky, in Two-Dimensional Crystals, Neutron Scattering. Neutron scattering is known to be a powerful instrument in the study of the structure and dynamic characteristics of 3D matter. The small effective cross-section of atoms neutron scattering was, for a long time, an obstacle to its application for the study of surfaces.

Some applications rely on single crystals (Chapter 3) but mostly powders (Chapters ) and bulk polycrystals (Chapters ) are analyzed, at ambient conditions as well as low and high temperature and high pressure (Chapters ).

Characterization of magnetic structures remains a core application of neutron scattering (Chapter 6). This book discusses the experimental techniques of inelastic neutron scattering and THz spectroscopy and provides the theoretical tools required to analyze their measurements using spin-wave theory.

For most materials, this analysis can resolve the microscopic magnetic interactions such as exchange, anisotropy, and Dzyaloshinskii–Moriya. the most interesting materials are only available in small very single crystals – for example it has now been about 7 years since MgB 2 was shown to have a very high T c, and available crystals are still too small for measurements of phonon dispersion by neutron scattering.

Thus, the huge Kohn anomaly. The one-magnon neutron scattering cross-section We saw that the magnetic neutron scattering cross-section is related to the dynamic correlation function.

For spin waves, only the transverse terms in the correlation function (ie., and ) give rise to inelastic scattering. Result: First term in sum corresponds to.

d Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TennesseeUSA Abstract Two new alkali vanadate carbonates with divalent transition metals have been synthesized as large single crystals via a high-temperature ( °C) hydrothermal technique. Several case studies utilizing spin-wave theory to analyze inelastic neutron-scattering and THz spectroscopy measurements are presented.

These include both single crystals and powders and both oxides and molecule-based magnets. In addition to sketching the numerical techniques used to fit dynamical spectra based on microscopic models, this book Reviews: 1. This important book presents a comprehensive account of the techniques and applications of single crystal neutron diffraction in the area of chemical crystallography and molecular structure.

Beginning with a brief description of the general principles and the reasons for choosing the technique - the "why" - the book covers the methods for both Author: Chick C Wilson. Pulsed beam single crystal and a small-angle scattering instrument and a neutron bottle experiment are in construction stage.

The peak thermal neutron flux at the beam more» sources is 10/sup 14/n/cm/sup 2/-sec. IPNS-I, an advanced pulsed source also based on Booster II, is scheduled for construction and is to begin operation in Diffuse neutron scattering has become a valuable tool for investigating local structure in materials ranging from organic molecular crystals containing only light atoms to piezo-ceramics that frequently contain heavy elements.

Although neutron sources will never be able to compete with X-rays in terms of the available flux the special properties of neutrons, viz. the ability to explore.In the newest issue on the topic of energy materials contributions from some of the leading neutron scatterers in this field have been gathered.

this book demonstrates the power of neutron scattering and imaging for energy research and thus represents an important tool to bridge the gap between neutron scattering specialists and energy.