1 / 7

POINT GROUPS & SPACE GROUPS

MATERIALS SCIENCE & ENGINEERING . Part of . A Learner’s Guide. AN INTRODUCTORY E-BOOK. Anandh Subramaniam & Kantesh Balani Materials Science and Engineering (MSE) Indian Institute of Technology, Kanpur- 208016 Email: anandh@iitk.ac.in, URL: home.iitk.ac.in/~anandh.

jiro
Download Presentation

POINT GROUPS & SPACE GROUPS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. MATERIALS SCIENCE & ENGINEERING Part of A Learner’s Guide AN INTRODUCTORY E-BOOK Anandh Subramaniam & Kantesh Balani Materials Science and Engineering (MSE) Indian Institute of Technology, Kanpur- 208016 Email:anandh@iitk.ac.in, URL:home.iitk.ac.in/~anandh http://home.iitk.ac.in/~anandh/E-book.htm POINT GROUPS& SPACE GROUPS A Detailed Exploration Space Group diagrams and tables http://img.chem.ucl.ac.uk/sgp/mainmenu.htm Magnetic Space groups http://mpg.web.cmu.edu/

  2. Point Groups and Space Groups: a detailed look • We have already considered an overview of point groups and space groups. • Here we have a more detailed look at various related aspects.

  3. The 32 Point Groups Highest symmetry class is in blue The possible combinations of crystallographic symmetry operators

  4. * The order for the highest symmetry point group for each crystal system is given. E.g. for cubic (4/m 3 2/m) point group has a order 48 → if we start with a general point then a total of 48 points is obtained

  5. Laue groups A centrosymmetric property imparts a (pseudo) centre of symmetry to a crystal . The crystal will seem to have a centre of symmetry with respect to that property even if is actually absent = + 2 i 2/m

More Related