Showing posts with label Crystal systems. Show all posts
Showing posts with label Crystal systems. Show all posts

Thursday, November 11, 2010

Status Chap 02

Hello Everyone, 

    Good Day to you all, I was little lazy yesterday. I did not read a single new topic also yesterday. I was making notes of all the topics which I was studied. I am sure making notes is good, as I read from hell lot of sources. I need to study about them all, make and store points at one place for future reference. So its good. Know more about study skills here by buying the book Effective Study Skills: Step-by-Step System to Achieve Student Success at amazon.


    So nothing new today. Just gonna edit old posts to ensure that they are of good quality. 


Don't forget to grab a copy of Material Science and Engineering book, which is essential for preparing for AMIE, Material Science.

with warm regards
allmyposts

Wednesday, November 10, 2010

Simple, Body Centered & Face Centered Cubic Systems

The three Bravais lattices which form cubic crystal systems are
The simple cubic system (P) consists of one lattice point on each corner of the cube. Each atom at the lattice points is then shared equally between eight adjacent cubes, and the unit cell therefore contains in total one atom (18 × 8).
The
body-centered cubic system (I) has one lattice point in the center of the unit cell in addition to the eight corner points. It has a net total of 2 lattice points per unit cell (18 × 8 + 1).
The
face-centered cubic system (F) has lattice points on the faces of the cube, that each gives exactly one half contribution, in addition to the corner lattice points, giving a total of 4 atoms per unit cell (18 × 8 from the corners plus 12× 6 from the faces).

Attempting to create a C-centered cubic crystal system (i.e., putting an extra lattice point in the center of each horizontal face) would result in a simple tetragonal Bravais lattice.


All the above information is taken from Wikipedia. Please refer to Wikipedia for more info.  

Don't forget to grab a copy of Material Science and Engineering book, which is essential for preparing for AMIE, Material Science.


with warm regards
AllMyPosts
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