Презентация на тему «Crystallography lv»

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crystallography lv	$Useful concept for crystallography & diffraction$ Useful concept for crystallography & diffraction	Keep track of sets of planes by giving them names - Miller indices	Miller indices (hkl) Choose cell, cell origin, cell axes:	Miller indices (hkl) Choose cell, cell origin, cell axes Draw set of
Miller indices (hkl) Choose cell, cell origin, cell axes Draw set of				Miller indices (hkl) Choose cell, cell origin, cell axes Draw set of
Miller indices (hkl) Choose cell, cell origin, cell axes Draw set of	Lattice planes	Lattice planes	Lattice planes	Lattice planes
Lattice planes	Lattice planes	Lattice planes	Lattice planes	Lattice planes
Lattice planes	Lattice planes	Lattice planes	Lattice planes	Lattice planes
Lattice planes	Lattice planes	Strange indices	Zones	Zones
Reciprocal lattice	Reciprocal lattice	Reciprocal lattice	Reciprocal lattice	Reciprocal lattice
Reciprocal lattice	Reciprocal lattice	Reciprocal lattice	Reciprocal lattice	Reciprocal lattice
Reciprocal lattice	Reciprocal lattice	Reciprocal lattice	Reciprocal lattice	Reciprocal lattice
Reciprocal lattice

Презентация на тему: «Crystallography lv». Автор: . Файл: «Crystallography lv.ppt». Размер zip-архива: 367 КБ.

Crystallography lv

содержание презентации «Crystallography lv.ppt»

№	Слайд	Текст
1		crystallography lv
2	$Useful concept for crystallography & diffraction$	Useful concept for crystallography & diffraction Lattice planes Think of sets of planes in lattice - each plane in set parallel to all others in set. All planes in set equidistant from one another Infinite number of set of planes in lattice
3		Keep track of sets of planes by giving them names - Miller indices (hkl) Lattice planes
4		Miller indices (hkl) Choose cell, cell origin, cell axes: origin b a
5		Miller indices (hkl) Choose cell, cell origin, cell axes Draw set of planes of interest: origin b a
6		Miller indices (hkl) Choose cell, cell origin, cell axes Draw set of planes of interest Choose plane nearest origin: origin b a
7		Miller indices (hkl) Choose cell, cell origin, cell axes Draw set of planes of interest Choose plane nearest origin Find intercepts on cell axes: 1,1,? origin b 1 a 1
8		Miller indices (hkl) Choose cell, cell origin, cell axes Draw set of planes of interest Choose plane nearest origin Find intercepts on cell axes 1,1,? Invert these to get (hkl) (110) origin b 1 a 1
9		Lattice planes Exercises
10		Lattice planes Exercises
11		Lattice planes Exercises
12		Lattice planes Exercises
13		Lattice planes Exercises
14		Lattice planes Exercises
15		Lattice planes Exercises
16		Lattice planes Exercises
17		Lattice planes Exercises
18		Lattice planes Exercises
19		Lattice planes Exercises
20		Lattice planes Exercises
21		Lattice planes Exercises
22		Lattice planes Exercises
23		Lattice planes Exercises
24		Lattice planes Two things characterize a set of lattice planes: interplanar spacing (d) orientation (defined by normal)
25		Strange indices For hexagonal lattices - sometimes see 4-index notation for planes (hkil) where i = - h - k
26		Zones 2 intersecting lattice planes form a zone plane (hkl) belongs to zone [uvw] if hu + kv + lw = 0 if (h1 k1 l1) and (h2 k2 l2 ) in same zone, then (h1+h2 k1+k2 l1+l2 ) also in same zone.
27		Zones zone axis [uvw] is ui + vj + wk Example: zone axis for (111) & (100) - [011] (011) in same zone? hu + kv + lw = 0 0·0 + 1·1 - 1·1 = 0 if (h1 k1 l1) and (h2 k2 l2 ) in same zone, then (h1+h2 k1+k2 l1+l2 ) also in same zone.
28		Reciprocal lattice Real space lattice
29		Reciprocal lattice Real space lattice - basis vectors a a
30		Reciprocal lattice Real space lattice - choose set of planes (100) planes n100
31		Reciprocal lattice Real space lattice - interplanar spacing d (100) planes d100 1/d100 n100
32		Reciprocal lattice Real space lattice ––> the (100) reciprocal lattice pt (100) planes d100 n100 (100)
33		Reciprocal lattice The (010) recip lattice pt n010 (100) planes d010 (010) (100)
34		Reciprocal lattice The (020) reciprocal lattice point n020 (020) planes d020 (010) (020) (100)
35		Reciprocal lattice More reciprocal lattice points (010) (020) (100)
36		Reciprocal lattice The (110) reciprocal lattice point (100) planes n110 d110 (010) (020) (110) (100)
37		Reciprocal lattice Still more reciprocal lattice points (100) planes the reciprocal lattice (010) (020) (100) (230)
38		Reciprocal lattice Reciprocal lattice notation
39		Reciprocal lattice Reciprocal lattice for hexagonal real space lattice
40		Reciprocal lattice Reciprocal lattice for hexagonal real space lattice
41		Reciprocal lattice Reciprocal lattice for hexagonal real space lattice
42		Reciprocal lattice Reciprocal lattice for hexagonal real space lattice
43		Reciprocal lattice
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