Preparation and NMR study of fluorinated Pb-BSCCO-2223

L. Frenkel Ben-Yakar; A. Shames; B. Bandyopadhyay; S. D. Goren; C. Korn; H. Shaked; H. Selig; L. Ben-Dor; J. H. Greenberg

doi:10.1016/s0921-4534(97)00743-0

Preparation and NMR study of fluorinated Pb-BSCCO-2223

L. Frenkel Ben-Yakar, A. Shames, B. Bandyopadhyay, S. D. Goren, C. Korn, H. Shaked, H. Selig, L. Ben-Dor, J. H. Greenberg

Department of Physics

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

Abstract

Samples of (BiPb)₂Sr₂Ca₂Cu₃O _10+δ (BSCCO-2223) prepared by the sol-gel route were fluorinated in ClF₃, resulting in approximately 3 fluorine atoms per formula as measured by fluoride selective-electrode. The samples were characterized by x-rays diffraction (XRD) and magnetization measurements. Neither the lattice parameters nor T_c (114K) changed after the fluorination. Nuclear magnetic resonance (NMR) measurements of ¹⁹F in the temperature range of 20-400K show that for T>270K there are 2 types of F nuclei environment. At T<270K only one line is resolved. At T<T_c, the fluorine linewidth increases with decreasing temperature. This is attributed to the formation of vortices. At very low temperatures, a new structure appears. This is attributed to an enhanced NQR signal from the Cu nuclei.

Original language	English
Pages (from-to)	1339-1340
Number of pages	2
Journal	Physica C: Superconductivity and its Applications
Volume	282-287
Issue number	PART 3
DOIs	https://doi.org/10.1016/s0921-4534(97)00743-0
State	Published - 1 Jan 1997

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)00743-0

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title = "Preparation and NMR study of fluorinated Pb-BSCCO-2223",

abstract = "Samples of (BiPb)2Sr2Ca2Cu3O 10+δ (BSCCO-2223) prepared by the sol-gel route were fluorinated in ClF3, resulting in approximately 3 fluorine atoms per formula as measured by fluoride selective-electrode. The samples were characterized by x-rays diffraction (XRD) and magnetization measurements. Neither the lattice parameters nor Tc (114K) changed after the fluorination. Nuclear magnetic resonance (NMR) measurements of 19F in the temperature range of 20-400K show that for T>270K there are 2 types of F nuclei environment. At T<270K only one line is resolved. At Tc, the fluorine linewidth increases with decreasing temperature. This is attributed to the formation of vortices. At very low temperatures, a new structure appears. This is attributed to an enhanced NQR signal from the Cu nuclei.",

author = "Ben-Yakar, {L. Frenkel} and A. Shames and B. Bandyopadhyay and Goren, {S. D.} and C. Korn and H. Shaked and H. Selig and L. Ben-Dor and Greenberg, {J. H.}",

year = "1997",

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doi = "10.1016/s0921-4534(97)00743-0",

language = "English",

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T1 - Preparation and NMR study of fluorinated Pb-BSCCO-2223

AU - Ben-Yakar, L. Frenkel

AU - Shames, A.

AU - Bandyopadhyay, B.

AU - Goren, S. D.

AU - Korn, C.

AU - Shaked, H.

AU - Selig, H.

AU - Ben-Dor, L.

AU - Greenberg, J. H.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Samples of (BiPb)2Sr2Ca2Cu3O 10+δ (BSCCO-2223) prepared by the sol-gel route were fluorinated in ClF3, resulting in approximately 3 fluorine atoms per formula as measured by fluoride selective-electrode. The samples were characterized by x-rays diffraction (XRD) and magnetization measurements. Neither the lattice parameters nor Tc (114K) changed after the fluorination. Nuclear magnetic resonance (NMR) measurements of 19F in the temperature range of 20-400K show that for T>270K there are 2 types of F nuclei environment. At T<270K only one line is resolved. At Tc, the fluorine linewidth increases with decreasing temperature. This is attributed to the formation of vortices. At very low temperatures, a new structure appears. This is attributed to an enhanced NQR signal from the Cu nuclei.

AB - Samples of (BiPb)2Sr2Ca2Cu3O 10+δ (BSCCO-2223) prepared by the sol-gel route were fluorinated in ClF3, resulting in approximately 3 fluorine atoms per formula as measured by fluoride selective-electrode. The samples were characterized by x-rays diffraction (XRD) and magnetization measurements. Neither the lattice parameters nor Tc (114K) changed after the fluorination. Nuclear magnetic resonance (NMR) measurements of 19F in the temperature range of 20-400K show that for T>270K there are 2 types of F nuclei environment. At T<270K only one line is resolved. At Tc, the fluorine linewidth increases with decreasing temperature. This is attributed to the formation of vortices. At very low temperatures, a new structure appears. This is attributed to an enhanced NQR signal from the Cu nuclei.

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U2 - 10.1016/s0921-4534(97)00743-0

DO - 10.1016/s0921-4534(97)00743-0

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VL - 282-287

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JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - PART 3

ER -

Preparation and NMR study of fluorinated Pb-BSCCO-2223

Abstract

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