Revealing antiphase boundaries and defects at atomic resolution in NaLaMgWO6 double perovskites

Shanming Li, Qingqing Gao, Jingbo Li, Xiaoqing He, Qinghua Zhang, Chao Li, Yang Shen, Lin Gu, Yuan Yao, Yanguo Wang, Richeng Yu, Xiaofeng Duan, Yuichi Ikuhara

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Structural investigations on double perovskites NaLaMgWO6 using combined X-ray powder diffraction and transmission electron microscopy techniques have verified the obtained structure with a space group of C2/m (No. 12), which is different from the original report of the monoclinic one. In addition, high-angle annular-dark-field electron micrographs of the NaLaMgWO6 double perovskite revealed the formation of antiphase boundaries, orientation domains and phase separation in Na0.7La1.1MgWO6 and NaLaMg1.3W0.9O6 by altering the compound chemistry. These results provide a direct structural insight to link the physical properties with their crystallographic defects for double perovskites on both scientific and engineering basis.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalMaterials Express
Volume2
Issue number1
DOIs
Publication statusPublished - 2012 Mar
Externally publishedYes

Keywords

  • Antiphase boundaries
  • Double perovskites
  • HAADF-STEM
  • Orientation domain

ASJC Scopus subject areas

  • Materials Science(all)

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