Synthesis and superconducting properties of fluorinated La2CuO4 using NH4F

S. Adachi; X. J. Wu; T. Tamura; T. Tatsuki; A. Tokiwa-Yamamoto; K. Tanabe

doi:10.1016/S0921-4534(97)01707-3

Synthesis and superconducting properties of fluorinated La₂CuO₄ using NH₄F

S. Adachi, X. J. Wu, T. Tamura, T. Tatsuki, A. Tokiwa-Yamamoto, K. Tanabe

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

Superconducting La₂CuO_4-δF_y samples were synthesized by heating La₂CuO₄ together with a fluorinating reagent, NH₄F, at 240°C in flowing oxygen gas. Bulk superconductivity with T_c = 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, H_c1(0) and H_c2(0), for the La₂CuO_4-δFy were roughly determined to be 98 Oe and 600 kOe, respectively.

Original language	English
Pages (from-to)	59-66
Number of pages	8
Journal	Physica C: Superconductivity and its applications
Volume	291
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-4534(97)01707-3
Publication status	Published - 1997 Nov 15
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(97)01707-3

Cite this

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title = "Synthesis and superconducting properties of fluorinated La2CuO4 using NH4F",

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 {\AA}, b = 5.442 {\AA}, c = 13.20 {\AA}) 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.",

author = "S. Adachi and Wu, {X. J.} and T. Tamura and T. Tatsuki and A. Tokiwa-Yamamoto and K. Tanabe",

year = "1997",

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TY - JOUR

T1 - Synthesis and superconducting properties of fluorinated La2CuO4 using NH4F

AU - Adachi, S.

AU - Wu, X. J.

AU - Tamura, T.

AU - Tatsuki, T.

AU - Tokiwa-Yamamoto, A.

AU - Tanabe, K.

PY - 1997/11/15

Y1 - 1997/11/15

N2 - 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.

AB - 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.

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ER -

Synthesis and superconducting properties of fluorinated La₂CuO₄ using NH₄F

Abstract

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