Microstructure of quasi-one-dimensional superconductor KCr3As3 prepared by K-ion deintercalation

Autor:	Qing-Ge Mu, Dong Yang, Tong Liu, Zi-An Li, Jianqi Li, Zhi-An Ren, Huaixin Yang, Lu Zhang, Chunhui Zhu, Jun Li, Huanfang Tian
Rok vydání:	2021
Předmět:	Superconductivity Materials science Chemical physics Phase (matter) Scanning transmission electron microscopy Intermediate state General Materials Science Condensed Matter Physics Alkali metal Microstructure Amorphous solid Ion
Zdroj:	Journal of Physics: Condensed Matter. 33:215404
ISSN:	1361-648X 0953-8984
DOI:	10.1088/1361-648x/abe64d
Popis:	The microstructure of quasi-one-dimensional KCr3As3 (133) superconductors, which were prepared by chemical cation deintercalation from their counterpart K2Cr3As3 (233) compounds, are investigated using scanning transmission electron microscopy. The nominal KCr3As3 crystals generally exhibit irregular nanoscale 133-phase domains accompanied by an amorphous As-deficient phase and cracks as a result of alkali cation deintercalation processes. Analysis of local defective structures reveals the existence of an intermediate state in the transformation from 233 to 133 phase and a possible K-deficient 233-type structure as a nanoscale cluster. Our microscopic investigations offer insight into the microstructure of KCr3As3 and the alkali metal cation deintercalation processes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8e3184b5c53ec43f2393f0b50e4491a9 https://doi.org/10.1088/1361-648x/abe64d Zobrazit plný text záznamu