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Solid state physics

Xem 1-20 trên 35 kết quả Solid state physics
  • This paper studies the effects of the sintering temperature on crystal structure, critical temperature (Tc) and excess conductivity of Bi-Pb-Sr-Ca-Cu-O (BPSCCO) system. Bulk BPSCCO samples were fabricated by the solid-state reaction method. Four different temperatures of 835 °C, 840 °C, 845 °C, and 850 °C were applied to sinter four different samples.

    pdf10p meyerowitz 25-12-2021 3 0   Download

  • Lecture Physical chemistry - States of Matter: Liquids and Solids provide students with knowledge about comparison of gases, liquids, and solids; phase transitions; phase diagrams; properties of liquids: surface tension and viscosity; intermolecular forces; explaining liquid properties;...

    ppt102p bachnhuocdong 23-12-2021 9 0   Download

  • The research objectives of the thesis: Mn-(Bi, Ga) based rare-earth-free hard magnetic materials. Soft magnetic materials of Fe-Co. Rare-earth-free hard magnetic nano composite materials of Mn-(Bi, Ga)/Fe-Co.

    pdf27p thebadguys 08-06-2021 11 1   Download

  • The purpose of this thesis is to study and synthesize BiMO materials (M = V,Ti,Sn) by microwaveassisted chemical method, hydrothermal method, sol-gel method and evaluate their physical properties. The synthesized materials (Bi2Sn2O7 and Bi2Ti2O7) were investigated the photocatalytic activity in the decomposition of RhotaminB (RhB) under visible light.

    pdf28p thebadguys 08-06-2021 11 0   Download

  • It has been reported in literature that studies have been conducted on electrical conductivity and dielectric properties of polymer blends with regard to storage and dissipation of electric and magnetic energies. These materials reveal numerous phenomena in optics, electronics and solid state physics.

    pdf9p tamynhan4 06-09-2020 8 0   Download

  • Amongst six natural lignocellulosic waste/raw material screened, millet straw contained maximum cellulose (30 %) and physical and chemical pre-treatment yielded maximum cellulase activity. The composition of millet straw showed 30 % cellulose, 10 % hemicellulose, 8.73 % total organic carbon, 0.7 % total nitrogen and 0.8 ppm phosphorous. Amongst four fungi of genus Aspergillus isolated from local soil dumps of kitchen and garden waste, Aspergillus flavus showed maximum cellulase activity on CMC agar medium and used for degradation of millet straw.

    pdf17p cothumenhmong4 25-03-2020 8 0   Download

  • White light emitting diodes (WLEDs) were made by coating organic and inorganic hybrid composites on blue LED chips. Y3Al5O12:Ce (YAG:Ce) nano powder prepared by lowtemperature Sol-Gel method exhibited a broadband green emission spectrum with the peak at 521 nm.

    pdf7p thuyliebe 12-10-2018 14 0   Download

  • In many solid-state laser pumped by flash lamps, thermal source distributed in laser rod is heterogeneous, complicated and cannot be described by explicit functions. Pumping process can be considered an adiabatic process. Thermal gradient generated within the laser rod is the result of the inhomogeneous distribution of absorbed energy. Calculation model and numerical method can help to determine the relation between the experimental values and thermal energy generated in laser rod.

    pdf7p thuyliebe 09-10-2018 31 0   Download

  • We present the design and development of folded four-mirror resonators for diode end-pumped solid-state Cr:LiSAF lasers. The astigmatic effects due to the Brewster-cut laser crystal and two curved mirrors used at oblique incidence were taken into consideration. The obtained results showed the stability regions of resonator, the beam parameters in the resonator and within the laser crystal as well as other sensitive parameters and their variation ranges. Furthermore, the designed folded four-mirror resonators for diode end-pumped Cr:LiSAF laser were experimentally evaluated.

    pdf12p thuyliebe 09-10-2018 29 0   Download

  • The temperature is increased from 50 K to 5500 K in order to observe the change of the structure during heating process. Various thermodynamic quantities related to the change of structure are calculated such as the radial distribution functions the Lindemann criterion, the occurrence/growth of liquidlike atoms, the formation of clusters, and the ring statistics. The melting point is defined. The phase transition from solid to liquid states exhibits first order behavior.

    pdf10p thuyliebe 08-10-2018 16 1   Download

  • norganic Chemistry This series reflects the breadth of modern research in inorganic chemistry and fulfils the need for advanced texts. The series covers the whole range of inorganic and physical chemistry, solid state chemistry, coordination chemistry, main group chemistry and bioinorganic chemistry. Synthesis of Organometallic Compounds A Practical Guide Edited by Sanshiro Komiya Tokyo University of Agriculture and Technology, Japan.

    pdf432p namde01 04-04-2013 74 19   Download

  • Designing integrated electronics has become a multidisciplinary enterprise that involves solving problems from fields as disparate as • Hardware architecture • Software engineering • Marketing and investment • Solid-state physics • Systems engineering • Circuit design • Discrete mathematics

    pdf879p nguyenthai_thinh 14-03-2013 103 31   Download

  • Dust is a ubiquitous feature of the cosmos, impinging directly or indirectly on most fields of modern astronomy. Dust grains composed of small (submicronsized) solid particles pervade interstellar space in the Milky Way and other galaxies: they occur in a wide variety of astrophysical environments, ranging from comets to giant molecular clouds, from circumstellar shells to galactic nuclei. The study of this phenomenon is a highly active and topical area of current research.

    pdf405p japet75 30-01-2013 38 5   Download

  • Earth science is an all-embracing term for the sciences related to the planet Earth.[2] It is arguably a special case in planetary science, the Earth being the only known life-bearing planet. There are both reductionist and holistic approaches to Earth sciences. The formal discipline of Earth sciences may include the study of the atmosphere, hydrosphere, oceans and biosphere, as well as the solid earth.

    pdf0p cronus75 14-01-2013 80 17   Download

  • EPA Region 9 has developed technical guidelines to help ensure that sampling and analyzing for Volatile Organic Compounds (VOCs) in soil and solid matrices are conducted in a manner that achieves accurate, technically defensible data. Region 9’s guidelines, which are intended to apply whenever VOC sampling in and analysis of soil and solid matrices are conducted, are consistent with United States Environmental Protection Agency (USEPA) Office of Solid Waste test methods.

    pdf23p cao_can 02-01-2013 64 3   Download

  • .MOSFET MODELING FOR VLSI SIMULATION Theory and Practice .International Series on Advances in Solid State Electronics and Technology (ASSET) Founding Editor: Chih-Tang Sah Published: Modern Semiconductor Quantum Physics by Li Ming-Fu Topics in Growth and Device Processing of III-V Semiconductors by Stephen John Pearton, Cammy R. Abernathy & Fan Ren Ionizing Radiation Effects in MOS Oxides by Timothy R. Oldham Forthcoming.

    pdf633p louisxlll6 28-12-2012 79 9   Download

  • The compounds of La1-xCaxMnO3- δ with x=0.46 and 0.50 occupy special positions in the phase diagram of La1-xCaxMnO3-δ system due to their interesting properties and charge-ordering phase transition. The samples were prepared by a solid-state reaction method. The XPD patterns show that the samples are of a single-phase orthorhombic-perovskite structure. The chemical compositions of the samples are investigated by EDS. The concentrations of oxygen and Mn3+; Mn4+ ions have been determined by dichromate method.

    pdf5p tuanlocmuido 19-12-2012 36 2   Download

  • The Physical Chemistry In Brief offers a digest of all major formulas, terms and definitions needed for an understanding of the subject. They are illustrated by schematic figures, simple worked-out examples, and a short accompanying text. The concept of the book makes it different from common university or physical chemistry textbooks. In terms of contents, the Physical Chemistry In Brief embraces the fundamental course in physical chemistry as taught at the Institute of Chemical Technology, Prague, i.e.

    pdf466p tuanloc_muido 07-12-2012 78 18   Download

  • This book is devoted to one of the most interesting and rapidly developing areas of modern nonlinear physics and mathematics – theoretical, analytical and numerical, study of the structure and dynamics of one-dimensional as well as two- and three-dimensional solitons and nonlinear wave packets described by the Korteweg–de Vries (KdV), Kadomtsev–Petviashvili (KP), nonlinear Schr¨odinger (NLS) and derivative nonlinear Schr¨odinger (DNLS) classes of equations.

    pdf305p bachduong1311 07-12-2012 34 1   Download

  • The new millennium has seen the birth of a new perspective that conflates research in solid-state physics, biological science as well as materials engineering. The perspective is one that recognizes that future new advances in all these areas will be based on a fundamental understanding of the atomic and molecular infrastructure of materials that has resulted from two centuries of chemistry. Major advances will be achieved when the novel behavior, in particular the quantum mechanical behavior, that nanoscale structures possess, can be controlled and harnessed....

    pdf0p waduroi 03-11-2012 71 5   Download

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