GATE MT 2011 Q41. For a cubic metal with lattice parameter 3.92A0, the first order diffraction peels from the x ray powder diffraction pattern taken with CuKx , radiation (λ=1.545 A0,) occur at 2 θ values of 39.7, 46.2, 67.5, 81.3. The crystal structure of metal is
GATE MT 2011 Q41. For a cubic metal with lattice parameter 3.92A0, the first order diffraction peels from the x ray powder diffraction pattern taken with CuKx , radiation (λ=1.545 A0,) occur at 2 θ values of 39.7, 46.2, 67.5, 81.3. The crystal structure of metal is
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Correct answer is option B. Given, a= 3.920 λ = 2dsin θ λ = 2(a/√h2+ k2 +l2) sinθ λ2/ 4a2 = sin 2θ/ (h2+ k2 +l2) (h2+ k2 +l2)= sin 2θ. 4a2 / λ2
Correct answer is option B.
Given, a= 3.920
λ = 2dsin θ
λ = 2(a/√h2+ k2 +l2) sinθ
λ2/ 4a2 = sin 2θ/ (h2+ k2 +l2)
(h2+ k2 +l2)= sin 2θ. 4a2 / λ2
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