第3讲晶体结构ä&c

第3讲晶体结构ä&c

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Unformatted text preview: 8 32 a, b, c 7 7 4 a b , γ 90º a b , γ =90º a = b , γ =90º a = b , γ =120º 7 I. a b c 1. α β γ 90º II. a b c 2. α = γ = 90º, β 90º 3. III a b c 4. α = β = γ = 90º 5. 6. 7. IV a = b = c 8. α = β = γ < 120 º 90º V a = b c 9. α = β = γ = 90º 10. VI a = b c 11. α = β = 90º, γ = 120 º VII a = b = c 12. α = β = γ = 90º 13. 14. 9 1 1 2 2 3 3 l l l + + a a a [ ] 1 2 3 l l l [ ] 1 2 3 l l l 1 2 3 l l l     < l 1 l 2 l 3 > 2.1 <100> <110> <111> <100> [100] [ 1 00] [010] [0 1 0] [001] [00 1 ] <110> [110] [ 1 1 0] [1 1 0] [ 1 10] [101] [ 1 01] [ 1 0 1 ] [10 1 ] [011] [0 1 1 ] [01 1 ] [0 1 1] <111> [111] [ 1 1 1 ] [1 1 1] [ 1 1 1 ] [ 1 11] [1 1 1 ] [11 1 ] [ 1 1 1] 10 (1) 3 h 1 , h 2 , h 3 h 1 , h 2 , h 3 a 1 a 2 a 3 a / h 1 , b / h 2 , c / h 3 ( h 1 h 2 h 3 ) ( h k l ) (2) a / H 1 , b / H 2 , c / H 3 ( H 1 H 2 H 3 ) ( h 1 h 2 h 3 ) ABC a 1 a 2 a 3 4 a 1 a 2 a 3 1/4 1 1 (144) a 1 a 2 a 3 a 1 a 2 /4 a 3 /4 A’B’C’D’ a 1 a 2 a 3 2 a 1 4 a 2 ∞ a 3 1/2, 1/4, 0 (210) a 1 a 2 a 3 a 1 /2, a 2 , a 3 /0 EFG a 1 a 2 a 3 − 3 a 1 − a 2 2 a 3 − 1/3, − 1,1/2 ( ) 2 6 3 a 1 a 2 a 3 − a 1 /2, − a 2...
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This note was uploaded on 05/05/2010 for the course PHYSICS 111 taught by Professor Zhengxiang during the Spring '08 term at Peking Uni..

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第3讲晶体结构ä&c

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