Polytypic phase transitions in metal intercalated Bi2Se3. (12th October 2016)

• Record Type: Journal Article
• Authors: Wang, Mengjing; Koski, Kristie J
• Is Part Of: Journal of physics. Volume 28:Number 49(2016)
• Publication Date: 2016-10-12
• Subjects: intercalation -- phase transitions -- bismuth selenide -- Bi2Se3 -- 2D materials; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/0953-8984/28/49/494002
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: The temperature and concentration dependent phase diagrams of zero-valent copper, cobalt, and iron intercalated bismuth selenide are investigated using in situ transmission electron microscopy. Polytypic phase transitions associated with superlattice formation along with order-disorder transitions of the guest intercalant are determined. Dual-element intercalants of CuCo, CuFe, and CoFe-Bi2 Se3 are also investigated. Hexagonal and striped domain formation consistent with two-dimensional ordering of the intercalant and Pokrovksy–Talapov theory is identified as a function of concentration. These studies provide a complete picture of the structural behavior of zero-valent metal intercalated Bi2 Se3 .