ss_3 - r———*———*“—*fi 3.5. The lattice...

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Unformatted text preview: r———*———*“—*fi 3.5. The lattice parameter of copper is 0.3615 nm. Determine the atomic radius of an individual copper atom. 09va \3 Rib. 7. GE? 07:; W. 73> a1 23:11 v: we “25?. b oléflym 25%. 25. In an FCC unit cell and list the position coordinates of the atoms whose centers are intersected by the direction vectors: [101] and [111]. fi__—___"“"—_! 3.27. PZT (PberTi1.x03) is a crystalline ceramic material which has attractive piezoelectric properties and is used to make microactuators. It can be made by reacting lead oxide (PbO), zirconia (Zr-02), and titania (TiOz) in the proper ratios. Its unit cell can be represented with a lead ion in the cube center, titanium or zirconium ions at the cube corners, and oxygen ions centered on the cube edges. (A) Use the Miller index notation to describe the positions of each of these ions in the unit cell. (B) Confirm that the unit cell contains 1 Pb ion, a total of 1 Ti or Zr ions, and 3 0 ions. (C) Confirm that the unit cell has a net neutral charge. (D) Would the introduction of Zr into PbTi03 be considered a substitutional addition or an interstitial addition? Briefly justify. (9 my. 0: 62915» Kofifi} LO\0\%>\ 0‘ :2’/T'v. 3053 £2003 32305 Q3258 Q; ’“\\ we @093 Lombkme be L\3\sD\ Q3003 L0}, \\ Quid\\\ 7'1 ‘ UK :1 \‘L’r-L* \*"’U\ (D O?” V310 . 1 p5 MAW '1 :x Etc-.2. " ZARKC‘ O ubm ism-V m s mew EMU! \ ssX 8 "We? \od: WW'M Ln- Mr owe anxu‘flwv‘“ Wsmm‘: ‘33“ Lemar ‘8 @Cxcm We, out? (Jaw WW3, boa-E») EL" $03.2. ‘Vk \‘E’ \5 guesrmm V1352. \ \ m \ M 0619?be t: tam escrow. 3.28. Draw a cubic unit cell illustrating the (2 T37) plane. 1. List five engineering applications where a ceramic materiai is used and identify what major property or properties qualify that material as being suitable for that application. EN} Wm CDWQJ-rfiSwfi swarm SVME. Lona Wu Mww “\l ska—fit): WW LE; RLthJ-AK 5» mt— Lb” VUQG W\Sh\) \W {\%QAS\0@LS W“ N: “was 4*“ Cumdr 2. GaAs is a compound semiconductor with the diamond-cubic crystal structure. Calculate the percent ionicity of the Ga-As bond. Also suggest what, if any, effect this ionic component may have on the relative positions of the Ga and As atoms as compared to, say, Si where atom pairs are located at (0,0,0) and (1/4, U4, U4). ~— 1 20 1679:, \. 6 [km 7:» \omtfi‘t 3 <2 \- W tot/Q £\;6Q.0\1\—< New = am \\:> om waP/b‘5‘ we Each \3 New! W mam to ammo Nxov‘t»: ot— totmc (Lemma me (As VLK‘PVLCX N? we swarm \omc CW‘LRLTER mock km T0 on gum XDWSE. \p Lawton?“ kmmm toe.me N 5% ‘33 “‘mh sewer“th Mb kc: meg toth was ...
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This note was uploaded on 10/03/2009 for the course E E344 taught by Professor Libera during the Spring '09 term at Stevens.

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ss_3 - r———*———*“—*fi 3.5. The lattice...

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