Study and discussion on two confusing points in teaching of crystal structure

YANG Jun

doi:10.16854/j.cnki.1000-0712.210346

College Physics >

2022 , Vol. 41 >Issue 4: 2

DOI: https://doi.org/10.16854/j.cnki.1000-0712.210346

Study and discussion on two confusing points in teaching of crystal structure

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1. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2.School of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2021-07-22

Revised date: 2021-10-08

Online published: 2022-04-19

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Abstract

Two confusing points in teaching of crystal and on many current textbooks are concerned. Lattice transformation is used to infer whether the formation being a new Bravais lattices or not and additional constraint is added to four indices. The lattice transformation must be carried out in same crystal system, and the transformation into another crystal system could not deny the original lattice. Three methods are provided to prove that the additional constraint in four indices has a rigorous mathematical foundation. This is favorable for students to understand the related contents in crystal structures.

Key words： crystal structure; lattice transformation; four indices

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YANG Jun . Study and discussion on two confusing points in teaching of crystal structure[J]. College Physics, 2022 , 41(4) : 2 . DOI: 10.16854/j.cnki.1000-0712.210346

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