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Superconductivity in KCa2Fe4As4F2 with Separate Double Fe2As2 Layers.
Wang, Zhi-Cheng; He, Chao-Yang; Wu, Si-Qi; Tang, Zhang-Tu; Liu, Yi; Ablimit, Abduweli; Feng, Chun-Mu; Cao, Guang-Han.
Affiliation
  • Wang ZC; Department of Physics and State Key Lab of Silicon Materials, Zhejiang University , Hangzhou 310027, China.
  • He CY; Department of Physics and State Key Lab of Silicon Materials, Zhejiang University , Hangzhou 310027, China.
  • Wu SQ; Department of Physics and State Key Lab of Silicon Materials, Zhejiang University , Hangzhou 310027, China.
  • Tang ZT; Department of Physics and State Key Lab of Silicon Materials, Zhejiang University , Hangzhou 310027, China.
  • Liu Y; Department of Physics and State Key Lab of Silicon Materials, Zhejiang University , Hangzhou 310027, China.
  • Ablimit A; Department of Physics and State Key Lab of Silicon Materials, Zhejiang University , Hangzhou 310027, China.
  • Feng CM; Department of Physics and State Key Lab of Silicon Materials, Zhejiang University , Hangzhou 310027, China.
  • Cao GH; Department of Physics and State Key Lab of Silicon Materials, Zhejiang University , Hangzhou 310027, China.
J Am Chem Soc ; 138(25): 7856-9, 2016 06 29.
Article in En | MEDLINE | ID: mdl-27321364
ABSTRACT
We report the synthesis, crystal structure, and physical properties of a quinary iron arsenide fluoride, KCa2Fe4As4F2. The new compound crystallizes in a body-centered tetragonal lattice (space group I4/mmm, a = 3.8684(2) Å, c = 31.007(1) Å, Z = 2) that contains double Fe2As2 conducting layers separated by insulating Ca2F2 layers. Our measurements of electrical resistivity, direct-current magnetic susceptibility, and heat capacity demonstrate bulk superconductivity at 33 K in KCa2Fe4As4F2.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2016 Document type: Article Affiliation country: China
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: J Am Chem Soc Year: 2016 Document type: Article Affiliation country: China