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WhatsApp Image 2019-03-17 at 21.17.00.jpeg - Alttomic...

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Unformatted text preview: Alttomic Arrangements Lattice Positions, Directions and Planes ( ` orders will be caused by directional bondinges ( arrangements\ Short range order is typical for liquids and amorphous lattice postTION - 1/2 1/2 1/2\ materials ( organization lacking or periodicity - no long rove order ) lattice director - [1: 1], < ! !17 - family of directions\ Amorphous solids and liquids are very smile but in amorphous D . D' = 101 1 0'1 case, to find the angle in between. solids the disorder is frozen . 9 lattice planes -> ( 2. 10 ) or $ 2 10} + family of places Crystalline structures have lary range order ( lattice ports ) -- each ater or molecule has Idenied surroundinges! O'mear density repeat distance ( distance between two centers\ \- 2 4 Ke Crystal System\ planar density - total number of full circles slope of the P TE rim` ` ) ` A - Regular and repeating ( repeating unit cells ) X Roy Diffraction bears and Cap^ Crystal systems and Crystal Structures BIT bak " The lowe's charge of the rancheros in ` each` 12. Chopier} / {now^ Crystal System - ( 7 ) determined by the unit cell geometry_ Imperfection ( Defects) If There are^ ^ Crystal Structure - > (14 ) determined by the distribution of the material, its pro^ {`( Bravais ) a ) Point Defects _ Zero Dimensional Defects` For moderat applied electr lattice points in the unit cell ( EX - V proportional to the field` Lattice points _ periodic arrangements of points in 3D sites -- associated with crystal lattice points (Ex-! ) where the }{`` Overall Overstore Different arrangements have different packing densities a - 1 ) vacancy - unoccupied lattice point. Onectionall bonds lower packing density. 1- 2 ) interstitial aterm _ extra aturn 1 - 3 ) substitution . ` * simple cubic `-FCC 6- 4) Frenkel - Kacacy + interstitiality. - 5 ) Schottly_ _^ pair of opposite choye vacancies orization...
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  • Spring '19
  • Mali
  • Crystal, Crystal system

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