Neutron Scattering Magnetic And Quantum Phenomena

Neutron Scattering - Magnetic and Quantum Phenomena provides detailed coverage of the application of neutron scattering in condensed matter research. The book's primary aim is to enable researchers in a particular area to identify the aspects of their work where neutron scattering techniques might contribute, conceive the important experiments to be done, assess what is required to carry them out, write a successful proposal for one of the major user facilities, and perform the experiments under the guidance of the appropriate instrument scientist. An earlier series edited by Kurt Sköld and David L. Price, and published in the 1980s by Academic Press as three volumes in the series Methods of Experimental Physics, was very successful and remained the standard reference in the field for several years. This present work has similar goals, taking into account the advances in experimental techniques over the past quarter-century, for example, neutron reflectivity and spin-echo spectroscopy, and techniques for probing the dynamics of complex materials of technological relevance. This volume complements Price and Fernandez-Alonso (Eds.), Neutron Scattering - Fundamentals published in November 2013. Covers the application of neutron scattering techniques in the study of quantum and magnetic phenomena, including superconductivity, multiferroics, and nanomagnetism Presents up-to-date reviews of recent results, aimed at enabling the reader to identify new opportunities and plan neutron scattering experiments in their own field Provides a good balance between theory and experimental techniques Provides a complement to Price and Fernandez-Alonso (Eds.), Neutron Scattering - Fundamentals published in November 2013

The inter action between the magnetic field generated by the neutron and the magnetic moment of atoms containing unpaired electrons was experimentally demonstrated for the first time about twenty years ago. The basic theory describing such an in teraction had already been developed and the first nuclear reactors with large available thermal neutron fluxes had recently been con structed. The power of the magnetic neutron interaction for in vestigating the structure of magnetic materials was immediately recognized and put to use where possible. Neutron diffraction, however, was practicable only in countries with nuclear reactors. The earliest neutron determinations of magnetic ordering were hence primarily carried out at Oak Ridge and Brookhaven in the US, at Chalk River in Canada and at Harwell in England. Diffraction patterns from polycrystalline ferromagnets and antiferromagnets are interpretable if produced by simple spin arrays. More complex magnetic scattering patterns could often be unravelled, in terms of a three-dimensional array of atomic moments, if the specimen studied is a single crystal. The devel opment of sophisticated cryogenic equipment, with independently alignable magnetic fields, opened the way to greater complexity in the magnetic structures that could be successfully determined, as did also the introduction of polarized neutron beams. By the end of the 'sixties, many countries were contributing significantly to neutron diffraction studies of a wide variety of magnetic materials.

Neutron scattering has become a key technique for investigating the properties of materials on an atomic scale. The uniqueness of this method is based on the fact that the wavelength and energy of thermal neutrons ideally match interatomic distances and excitation energies in condensed matter, and thus neutron scattering is able to directly examine the static and dynamic properties of the material. In addition, neutrons carry a magnetic moment, which makes them a unique probe for detecting magnetic phenomena. In this important book, an introduction to the basic principles and instrumental aspects of neutron scattering is provided, and the most important phenomena and materials properties in condensed matter physics are described and exemplified by typical neutron scattering experiments, with emphasis on explaining how the relevant information can be extracted from the measurements.

This book provides ideas on what neutron scattering could look like in the next millennium. In particular, nonconventional, unusual or innovative neutron scattering experiments (from both the scientific and the instrumental point of view) are described which either have novel applications or provide a new insight into science and technology. Chapters on theoretical aspects are adequately included. The scientific and technical areas cover the following topics: novel neutron scattering techniques and perspectives in neutron scattering instrumentation (including sample environment); soft condensed matter, particularly colloids and polymers; materials science and industrial applications; structure and dynamics of multilayers and nanocrystalline materials; dynamical aspects and quantum effects in molecular magnets; strongly correlated electron systems, with emphasis on dynamic correlations in low-dimensional magnets. All these topics are thoroughly introduced and discussed by acknowledged experts. Contents:Principles of Neutron Scattering:Introduction to Neutron Scattering (P Böni & A Furrer)Brillouin Scattering with Neutrons and X-Rays (B Dorner)Instrumentation for Neutron Scattering:Novel Trends in Neutron Optics (I S Anderson et al.)Methods and Perspectives of Neutron Scattering at High Pressure (S Klotz)Soft Condensed Matter:Colloids as Model Systems for Condensed Matter Physics (R Klein)Polymers, Colloids and Microemulsions: Neutron Scattering Experiments (P Schurtenberger, et al.)Molecular Magnetism:Molecular Magnetism: A School of Physics (J Villain)Neutron Scattering of Molecular Magnets (H P Andres et al.)Low-Dimensional Magnetism:Computational Probes of Collective Excitations in Low-Dimensional Magnetism (G Müller & M Karbach)Neutron Scattering (Mostly) from Low Dimensional Magnetic Systems (T G Perring)Multilayers and Nanocrystals:Future Trends in Heterostructure Research with Neutron Scattering (H Zabel)Structure and Dynamics of Nanocrystals (R Hempelmann) Readership: Materials scientists. Keywords:Neutron Scattering;Colloids;Polymers;Material Science;Nanocrystalline Material;Molecular Magnets;Brillouin Scattering;Neutron Optics;Microemulsions;Heterostructure

Understanding and manipulating the properties of materials naturally occurring in our world and artificially produced by modern technologies requires detailed information on their properties on the atomic scale. This information is the basis for any kind of research in physics, chemistry, biology, engineering, metallurgy, and ceramics. Among the various experimental methods, neutron and photon scattering have become the key techniques of choice. This book provides an overview of the complementarity between neutron and synchrotron x-ray scattering. The most important topics are covered, including structure determination, magnetic correlations, polymer dynamics, thin films and multilayers, photoemission studies, etc; they are thoroughly introduced and discussed by experts from both the experimental and the theoretical side. Contents:Neutron- and Synchrotron X-Ray Scattering (The Theoretical Principles) (W E Fischer)Structure Determination by Powder Synchrotron X-Ray Diffraction (A N Fitch)Magnetic Neutron and Synchrotron X-Ray Scattering (W G Stirling)Magnetic Excitations Through the Eye of the Neutron (W J L Buyers)Topological Excitations in Low-Dimensional Magnets (H B Braun)Elastic and Inelastic X-Ray Scattering from Correlated Electrons: A Theoretical Perspective (M Altarelli)From Thin Films to Superlattices Studied with X-Rays and Neutrons (D F McMorrow)Small-Angle and Surface Scattering from Porous and Fractal Materials (S K Sinha)Hot Topics in Condensed Matter Physics (H R Ott)Neutron Beam Optics (P Böni)Synchrotron X-Ray Beam Optics (A Freund)Summary Lecture: Some Features of the Scattering and Absorption of Beams of Neutrons and Beams of X-Rays (S W Lovesey)and other papers Readership: Condensed matter and solid state physicists. Keywords:Photon Scattering;Structure Determination;Magnetic Correlations;Polymer Dynamics;Thin Films;Multilayers;Photoemission Studies;Synchrotron X-Ray;Optics;Neutrons

The inter action between the magnetic field generated by the neutron and the magnetic moment of atoms containing unpaired electrons was experimentally demonstrated for the first time about twenty years ago. The basic theory describing such an in teraction had already been developed and the first nuclear reactors with large available thermal neutron fluxes had recently been con structed. The power of the magnetic neutron interaction for in vestigating the structure of magnetic materials was immediately recognized and put to use where possible. Neutron diffraction, however, was practicable only in countries with nuclear reactors. The earliest neutron determinations of magnetic ordering were hence primarily carried out at Oak Ridge and Brookhaven in the US, at Chalk River in Canada and at Harwell in England. Diffraction patterns from polycrystalline ferromagnets and antiferromagnets are interpretable if produced by simple spin arrays. More complex magnetic scattering patterns could often be unravelled, in terms of a three-dimensional array of atomic moments, if the specimen studied is a single crystal. The devel opment of sophisticated cryogenic equipment, with independently alignable magnetic fields, opened the way to greater complexity in the magnetic structures that could be successfully determined, as did also the introduction of polarized neutron beams. By the end of the 'sixties, many countries were contributing significantly to neutron diffraction studies of a wide variety of magnetic materials.

Neutron Scattering from Magnetic Materials is a comprehensive account of the present state of the art in the use of the neutron scattering for the study of magnetic materials. The chapters have been written by well-known researchers who are at the forefront of this field and have contributed directly to the development of the techniques described. Neutron scattering probes magnetic phenomena directly. The generalized magnetic susceptibility, which can be expressed as a function of wave vector and energy, contains all the information there is to know about the statics and dynamics of a magnetic system and this quantity is directly related to the neutron scattering cross section. Polarized neutron scattering techniques raise the sophistication of measurements to even greater levels and gives additional information in many cases. The present book is largely devoted to the application of polarized neutron scattering to the study of magnetic materials. It will be of particular interest to graduate students and researchers who plan to investigate magnetic materials using neutron scattering. · Written by a group of scientist who have contributed directly in developing the techniques described. · A complete treatment of the polarized neutron scattering not available in literature. · Gives practical hits to solve magnetic structure and determine exchange interactions in magnetic solids. · Application of neutron scattering to the study of the novel electronic materials.

A long-awaited reprint of the book that has established itself as the classic textbook on neutron scattering. It will be an invaluable introductory text for students taking courses on neutron scattering, as well as for researchers and those who would like to deepen their knowledge on the subject through self-study.