晶体结构理论与应用

　　In crystallography，crystal structure is a description of the ordered arrange-ment of atoms，ions or molecules in a crystalline material.Ordered structures oc-cur from the intrinsic nature ofthe constituent particles to form symmetric patterns that repeat along the principal directions of three-dimensional space in matter.The smallest group of particles in the material that constitutes this repeating pattern is the unit cell of the structure.The unit cell completely reflects the sym-metry and structure of the entire crystal，which is built up by repetitive translation of the unit cell along its principal axes.The translation vectors define the nodes of the Bravais lattice.The lengths of the principal axes，or edges，of the unit cell and the angles between them are the lattice constants，also called lattice parameters or cell para-meters.The symmetry properties of the crystal are described by the concept of space groups.All possible symmetric arrangements of particles in three-dimen-sional space may be described by the 230 space groups.The crystal structure and symmetry play a critical role in determining many physical properties，such as cleavage，electronic band structure，and optical trans-parency.In the present book，twenty-nine typical literatures about crystalline struc-ture published on international authoritative journals were selected to introduce the worldwide newest progress，which contains reviews or original researches on crystallography，crystalline material，electronic band structure and optical transpa-rency，etc.We hope this book can demonstrate advances in crystalline structure as well as give references to the researchers，students and other related people.

　　编委会成员由国内外著名高校、科研中心及重点实验室专家组成，国际有哈佛大学、麻省理工学院、加州理工学院、牛津大学、剑桥大学、芝加哥大学、哥伦比亚大学、耶鲁大学、康奈尔大学、宾夕法尼亚大学、帝国理工学院等，国内有清华大学、北京大学、中国科学院、香港大学、武汉大学等。每分册由10名相关领域的专家组成编委会，他们均为国内外著名学府、科研中心及重点实验室一线工作科研专家。