'Cubic unit cell' diaporamas de présentation

Chapter 1 Crystal Structures

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Fundamentals of Rietveld Refinement I. XRD Pattern Simulation

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Non-balanced minimal surfaces

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The Independent Particle Approximation

Screening electron cloud. + Z e. r. electron. The Independent Particle Approximation. We approximate the strong electrostatic forces between e - s by treating the force on each electron independently, which includes force from nucleus and other electrons

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SOLID STATES

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RFSS: Part 3 Lecture 14 Plutonium Chemistry

RFSS: Part 3 Lecture 14 Plutonium Chemistry. Isotopes from 228?A?247 Important isotopes 238 Pu 237 Np(n, g ) 238 Np 238 Pu from beta decay of 238 Np Separated from unreacted Np by ion exchange Decay of 242 Cm 0.57 W/g Power source for space exploration

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Figure 16.9: Three cubic unit cells and the corresponding lattices.

Figure 16.9: Three cubic unit cells and the corresponding lattices. The closet packing arrangement of uniform spheres.

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Solid Crystal Structures (based on Chap. 12 Sec 11 of Jespersen 6 th Ed)

Solid Crystal Structures (based on Chap. 12 Sec 11 of Jespersen 6 th Ed). Dr. C. Yau Spring 2014. 1. 1. What are Crystals?.

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The Modern Periodic Table

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Crystal structures

Crystal structures. When we look around much of what we see is non-crystalline (organic things like wood, paper, sand; concrete walls, etc. ? some of the things may have some crystalline parts!).

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Chemistry

Chemistry. Solid State-II. Session Objectives. Voids Packing fraction. Effective number of atoms =. Packing fraction for simple cubic unit cell. The fraction of total volume of a cube occupied by constituent particles. For fcc unit cell,. Packing fraction for fcc unit cell.

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Crystal Defects

Crystal Defects. Perfect crystals do not exist; even the best crystals have 1ppb defects. defects are imperfections in the regular repeating pattern and may be classified in terms of their dimensionality (Point vs. Extended). Point Defects Vacancies

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2D Packing Examples

2D Packing Examples. Answer the following questions for both packing diagrams. Find the smallest unit that, if repeated, would give you the entire structure. This is the unit cell. Draw a box on the diagram representing the unit cell.

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New double-cation borohydrides for on-board hydrogen storage

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Sulfur, S 8

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DRSA Inreach

Internal Stresses in Aluminum Engines. Diffraction - Part 1. DRSA Inreach. Measuring Residual Stresses. Introduction of research project Solidification of casting alloys Stresses and strains Crystal lattices Diffraction Neutrons Experimental design Data Analysis of data.

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Lecture # 5

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