Solution Callister 7- ... Ciência dos Materiais - callister7e sm ch03 51, Manuais, Projetos, Pesquisas de Física

Baixe Solution Callister 7- ... Ciência dos Materiais - callister7e sm ch03 51 e outras Manuais, Projetos, Pesquisas em PDF para Física, somente na Docsity! 3-61 Linear and Planar Densities 3.51 (a) In the figure below is shown a [100] direction within an FCC unit cell. For this [100] direction there is one atom at each of the two unit cell corners, and, thus, there is the equivalent of 1 atom that is centered on the direction vector. The length of this direction vector is just the unit cell edge length, 2R 2 (Equation 3.1). Therefore, the expression for the linear density of this plane is LD100 = number of atoms centered on [100] direction vector length of [100] direction vector = 1 atom 2 R 2 = 1 2 R 2 An FCC unit cell within which is drawn a [111] direction is shown below. For this [111] direction, the vector shown passes through only the centers of the single atom at each of its ends, and, thus, there is the equivalence of 1 atom that is centered on the direction vector. The length of this direction vector is denoted by z in this figure, which is equal to z = x 2 + y2 Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or instructional purposes only to students enrolled in courses for which the textbook has been adopted. Any other reproduction or translation of this work beyond that permitted by Sections 107 or 108 of the 1976 United States Copyright Act without the permission of the copyright owner is unlawful.