Lect21_notes

7 sharing of face edge and corner atoms by multiple

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Unformatted text preview: BEMS 164 – XRD, SEM & Microanalysis: Lecture 21 ! 7 Sharing of Face, Edge and Corner Atoms by Multiple Unit Cells! ! ! ! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 21 ! 8 Coordination and Nearest Neighbors! ! ! ! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 21 ! 9 CBEMS 164 – XRD, SEM & Microanalysis: Lecture 21 ! 10 Interstitial Sites! Ionic Compounds! ! ! ! ! ! ! ! ! ! ! ! ! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 21 ! 11 CBEMS 164 – XRD, SEM & Microanalysis: Lecture 21 ! 12 Interstitial Sites! Prototype Structures! Do3 or BiF3 Structure! A close-packed structure with all interstitial sites filled.! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! The Bi occupy the close packed geometry, while F occupies all the octahedral and tetrahedral sites. 16 atoms per unit cell.! CBEMS 164 – XRD, SEM & Microanalysis: Lecture 21 ! 13 Prototype Structures! Do3 or BiF3 Structure! A close-packed structure with all interstitial sites filled.! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! The Bi occupy the...
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This note was uploaded on 01/16/2014 for the course CBEMS 164 taught by Professor Porter,j during the Fall '08 term at UC Irvine.

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