Synthesis and superconducting properties of fluorinated La2CuO4 using NH4F

S. Adachi, X. J. Wu, T. Tamura, T. Tatsuki, Ayako Yamamoto, K. Tanabe

Research output: Contribution to journalArticle

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Abstract

Superconducting La2CuO4-δFy samples were synthesized by heating La2CuO4 together with a fluorinating reagent, NH4F, at 240°C in flowing oxygen gas. Bulk superconductivity with Tc = 42 K in the samples was confirmed by DC magnetic susceptibility measurements. The enhancement in the orthorhombicity of the K2NiF4 phase (a = 5.319 Å, b = 5.442 Å, c = 13.20 Å) was observed. The lower and upper critical fields, Hc1(0) and Hc2(0), for the La2CuO4-δFy were roughly determined to be 98 Oe and 600 kOe, respectively.

Original languageEnglish
Pages (from-to)59-66
Number of pages8
JournalPhysica C: Superconductivity and its Applications
Volume291
Issue number1-2
Publication statusPublished - 1997 Nov 15
Externally publishedYes

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Superconductivity
Magnetic susceptibility
Heating
Oxygen
synthesis
Gases
reagents
superconductivity
direct current
magnetic permeability
heating
augmentation
oxygen
gases
La2CuO4

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Synthesis and superconducting properties of fluorinated La2CuO4 using NH4F. / Adachi, S.; Wu, X. J.; Tamura, T.; Tatsuki, T.; Yamamoto, Ayako; Tanabe, K.

In: Physica C: Superconductivity and its Applications, Vol. 291, No. 1-2, 15.11.1997, p. 59-66.

Research output: Contribution to journalArticle

Adachi, S, Wu, XJ, Tamura, T, Tatsuki, T, Yamamoto, A & Tanabe, K 1997, 'Synthesis and superconducting properties of fluorinated La2CuO4 using NH4F', Physica C: Superconductivity and its Applications, vol. 291, no. 1-2, pp. 59-66.
Adachi, S. ; Wu, X. J. ; Tamura, T. ; Tatsuki, T. ; Yamamoto, Ayako ; Tanabe, K. / Synthesis and superconducting properties of fluorinated La2CuO4 using NH4F. In: Physica C: Superconductivity and its Applications. 1997 ; Vol. 291, No. 1-2. pp. 59-66.
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