Local Structural Distortion Induced Uniaxial Negative Thermal Expansion in Nanosized Semimetal Bismuth

Qiang Li; He Zhu; Lirong Zheng; Longlong Fan; Yang Ren; Jun Chen; Jinxia Deng; Xianran Xing

doi:10.1002/advs.201600108

Local Structural Distortion Induced Uniaxial Negative Thermal Expansion in Nanosized Semimetal Bismuth

Adv Sci (Weinh). 2016 Jun 1;3(11):1600108. doi: 10.1002/advs.201600108. eCollection 2016 Nov.

Authors

Qiang Li¹, He Zhu¹, Lirong Zheng², Longlong Fan¹, Yang Ren³, Jun Chen¹, Jinxia Deng¹, Xianran Xing¹

Affiliations

¹ Department of Physical Chemistry University of Science and Technology Beijing Beijing 100083 China.
² Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100039 China.
³ X-Ray Science Division Argonne National Laboratory Argonne IL 60439 USA.

Abstract

The corrugated layer structure bismuth has been successfully tailored into negative thermal expansion along c axis by size effect. Pair distribution function and extended X-ray absorption fine structure are combined to reveal the local structural distortion for nanosized bismuth. The comprehensive method to identify the local structure of nanomaterials can benefit the regulating and controlling of thermal expansion in nanodivices.

Keywords: EXAFS; PDF; local structural distortion; nanosized bismuth; negative thermal expansion.