Download or read book Acoustic Paramagnetic Resonance Spectra of Cr2 in MgO and CaO written by Ian John Shellard and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Acoustic Paramagnetic Resonance (APR) of the chromous ion in two cubic host lattices, MgO and CaO, has been investigated for phonons of frequency around 9.5 GHz and temperatures in the range 1.51 K to 4.2 K. An iron-cored electromagnet produced magnetic fields continuously variable from 0 to 2 Tesla, the direction of magnetic field could be varied through 90 degree in the same plane as the phonon direction. Experiments were performed in which a variable uniaxial stress could be applied to a crystal of Cr2+ in MgO, giving information about the effects of local lattice strain on the APR spectrum. A change in the g-value of one resonance line with applied stress was observed, and, from this, the value of the strain coupling constant could be obtained. The experimental results enabled values for the parameters 3r (Jahn-Teller tunnelling splitting) and K (spin-orbit splitting) to be obtained, which were compared with those obtained by other methods. Further experiments were performed on Cr2+ in CaO in which the direction of the applied magnetic field could be changed by rotating the sample crystal about the phonon direction, enabling the field to be aligned with the crystal 111 direction. The theoretical prediction (Fletcher (1971)) that strain broadening of the resonance lines should be reduced under these conditions was demonstrated. Experiments were performed at two separate frequencies and two separate temperatures, and the results used as data for a computer programme which gave the values of the various parameters of the system, and thus allowed a low-lying energy level diagram to be predicted. There were similarities between this diagram and the accepted energy-level diagram of Cr2+ in MgO, as would be expected. The differences were attributed to die difference in the lattice constants of the host materials.
Download or read book Crystal Fields for Transition Metal Ions in Laser Host Materials written by Clyde A. Morrison and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: A researcher trying to predict or interpret spectra of transition metal ionsin possible laser host materials is confronted with a variety of different methods of describing the same physical situation. This book provides a systematic approach to the applied theory of crystal-field interactions of transition metal ions in 49 crystalline hosts that are or show promise of being good laser materials. The tables that make up the main part of the book present the experimentally determined parameters of the 3dN, 4dN, and 5dN transition-metal ions in the second, third, and fourth ionization states. These parameters have been converted to Slater and crystal-field parameters. The book is a source for research workers in laser development and in crystal-field theory, and for graduate students of solid state chemistry and physics.
Download or read book Electron Paramagnetic Resonance written by Stanley Geschwind and published by Springer. This book was released on 1972-10 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physical Review Physical Review Letters M Z written by Nichigai Asoshiētsu and published by . This book was released on 1974 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1977 with total page 1078 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index to Theses Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 1982 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Phonon Scattering in Condensed Matter written by Humphrey Maris and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Third International Conference on Phonon Scattering in Condensed Matter was held at Brown University, Providence, Rhode Island from August 28-31, 1979. The previous conferences in this series were held at Nottingham in 1975, and in France at Paris and Ste Maxime in 1972. Until about 15 years ago phonon scattering was studied almost exclusively by measurements of thermal conductivity. This approach has the severe limitation that the result obtained for the phonon scattering rate is actually the average of the scattering for all of the phonons in the sample. Thus, no distinction can be made between phonons of different polarization, direction of propagation, or energy. During the 1960's several significant developments occurred. The most important of these was the application by Von Gutfeld and Nethercot of the "heat-pulse" method, previously used only in liquid helium, to the investigation of phonons in crystals. This approach makes possible the study of the propagation and scat tering of phonons of known polarization and propagation direction. The early heat-pulse experiments used phonon generators which pro duced phonons having a broad distribution of energies and, in addi tion, the phonon detectors were sensitive to phonons of all energies.
Download or read book Acta Physica Slovaca written by and published by . This book was released on 1982 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1981 with total page 1336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Journal of Physics A to E Twenty one Year Index 1950 1970 written by Nichigai Asoshiētsu and published by . This book was released on 1972 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains both a subject index and an author index to papers published in the Journal of Physics Series and its predecessors from 1950 to 1970. Journals covered in this volume include: Proceedings of the Physical Society, 1950-1967 (v. 63-92), British Journal of Applied Physics, 1950-1967 (v. 1-18), Journal of Scientific Instruments, 1950-1967 (v. 27-44), Journal of Physics, A to E, 1968-1970 (v.1-3)-- Explanatory Notes (p. iv).
Download or read book Ceramic Abstracts written by American Ceramic Society and published by . This book was released on 1996 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Jahn Teller Effect A Bibliographic Review written by Isaak Borisovich Bersuker and published by Springer. This book was released on 1984 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book M ssbauer Spectroscopy Applied to Magnetism and Materials Science written by G.J Long and published by Springer. This book was released on 1993 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 2 presents the latest applications of Mössbauer spectroscopy to the study of magnetic materials. Topics include: Surface and thin film analysis, iron-based amorphous ribbons and wires, diffusion studies, analytical methods for Mössbauer spectral analysis of complex materials, and quasicrystalline materials among others. These discussions will be invaluable to materials scientists, inorganic chemists, and solid-state chemists.
Download or read book Conf rence Internationale Sur la Diffusion Des Phonons Dans Les Solides Comptes Rendus written by H. J. Albany and published by . This book was released on 1972 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transition Metal Oxides written by Chintamani Nagesa Ramachandra Rao and published by VCH Publishers. This book was released on 1995 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CRC Handbook of Metal Etchants written by Perrin Walker and published by CRC Press. This book was released on 1990-12-11 with total page 1434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents cleaning and etching solutions, their applications, and results on inorganic materials. It is a comprehensive collection of etching and cleaning solutions in a single source. Chemical formulas are presented in one of three standard formats - general, electrolytic or ionized gas formats - to insure inclusion of all necessary operational data as shown in references that accompany each numbered formula. The book describes other applications of specific solutions, including their use on other metals or metallic compounds. Physical properties, association of natural and man-made minerals, and materials are shown in relationship to crystal structure, special processing techniques and solid state devices and assemblies fabricated. This publication also presents a number of organic materials which are widely used in handling and general processing...waxes, plastics, and lacquers for example. It is useful to individuals involved in study, development, and processing of metals and metallic compounds. It is invaluable for readers from the college level to industrial R & D and full-scale device fabrication, testing and sales. Scientific disciplines, work areas and individuals with great interest include: chemistry, physics, metallurgy, geology, solid state, ceramic and glass, research libraries, individuals dealing with chemical processing of inorganic materials, societies and schools.
Download or read book Advances in Molten Slags Fluxes and Salts written by Ramana Reddy and published by Springer. This book was released on 2017-01-10 with total page 1373 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection focuses on ferrous and non-ferrous metallurgy where ionic melts, slags, fluxes, or salts play important roles in industrial growth and economy worldwide. Technical topics included are: thermodynamic properties and phase diagrams and kinetics of slags, fluxes, and salts; physical properties of slags, fluxes, and salts; structural studies of slags; interfacial and process phenomena involving foaming, bubble formation, and drainage; slag recycling, refractory erosion/corrosion, and freeze linings; and recycling and utilization of metallurgical slags and models and their applications in process improvement and optimization. These topics are of interest to not only traditional ferrous and non-ferrous metal industrial processes but also new and upcoming technologies.
