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Optimization of the crystal growth of the superconductor CaKFe4As4 from solution in the FeAs-CaFe2As2-KFe2As2 system

TitleOptimization of the crystal growth of the superconductor CaKFe4As4 from solution in the FeAs-CaFe2As2-KFe2As2 system
Publication TypeJournal Article
Year of Publication2017
AuthorsMeier, WR, Kong, T, Bud'ko, SL, Canfield, PC
JournalPhysical Review Materials
Volume1
Pagination013401
Date Published06
Type of ArticleArticle
ISBN Number2475-9953
Accession NumberWOS:000416551900004
Keywordssingle-crystals
Abstract

). Temperature dependent resistance and magnetization measurements are emphasized, in addition to the x-ray diffraction, to detect intergrown CaKFe4As4, CaFe2As2, and KFe2As2 within what appear to be single crystals. Guided by the rules of phase equilibria and these data, we adjusted growth parameters to suppress formation of the impurity phases. The resulting optimized procedure yielded phase-pure single crystals of CaKFe4As4. This optimization process offers insight into the growth of quaternary compounds and a glimpse of the four-component phase diagram in the pseudoternary FeAs-CaFe2As2-KFe2As2 system.

DOI10.1103/PhysRevMaterials.1.013401
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Complex States