199Hg and63,65Cu NMR studies of mercury based high-Tc superconductors

W. Hoffmann; H. Breitzke; C. T. Simmons; K. Lüders; G. Buntkowsky; H. H. Limbach; E. V. Antipov; A. A. Gippius; O. Loebich; H. R. Khan; M. Paranthaman; J. R. Thompson

doi:10.1007/BF03162586

¹⁹⁹Hg and^63,65Cu NMR studies of mercury based high-T_c superconductors

W. Hoffmann, H. Breitzke, C. T. Simmons, K. Lüders, G. Buntkowsky, H. H. Limbach, E. V. Antipov, A. A. Gippius, O. Loebich, H. R. Khan, M. Paranthaman, J. R. Thompson

Nanomaterials Chemistry Group

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Abstract

Hg-oxide ceramic high temperature superconductors were studied by¹⁹⁹Hg and^63,65Cu NMR spectroscopy. Room temperature spectra, spin-spin and spin-lattice relaxation times of samples with different superconducting transition temperatures are presented. A spin-lattice relaxation time of T₁=35 msec and a spin-spin relaxation time of T₂=1.6 msec were found for the¹⁹⁹Hg NMR. All samples exhibit similar characteristic powder spectra caused by an axially symmetric¹⁹⁹Hg spin interaction. The isotropic value and the anisotropy of the tensor relative to solid HgCl₂ as a standard substance is estimated. Furthermore, results of^63,65Cu NMR measurements at a temperature of 4.2 K which exhibit a typical powder line shape (for I=3/2) are presented.

Original language	English
Pages (from-to)	57-65
Number of pages	9
Journal	Applied Magnetic Resonance
Volume	8
Issue number	1
DOIs	https://doi.org/10.1007/BF03162586
State	Published - Jan 1995

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title = "199Hg and63,65Cu NMR studies of mercury based high-Tc superconductors",

abstract = "Hg-oxide ceramic high temperature superconductors were studied by199Hg and63,65Cu NMR spectroscopy. Room temperature spectra, spin-spin and spin-lattice relaxation times of samples with different superconducting transition temperatures are presented. A spin-lattice relaxation time of T1=35 msec and a spin-spin relaxation time of T2=1.6 msec were found for the199Hg NMR. All samples exhibit similar characteristic powder spectra caused by an axially symmetric199Hg spin interaction. The isotropic value and the anisotropy of the tensor relative to solid HgCl2 as a standard substance is estimated. Furthermore, results of63,65Cu NMR measurements at a temperature of 4.2 K which exhibit a typical powder line shape (for I=3/2) are presented.",

author = "W. Hoffmann and H. Breitzke and Simmons, {C. T.} and K. L{\"u}ders and G. Buntkowsky and Limbach, {H. H.} and Antipov, {E. V.} and Gippius, {A. A.} and O. Loebich and Khan, {H. R.} and M. Paranthaman and Thompson, {J. R.}",

year = "1995",

month = jan,

doi = "10.1007/BF03162586",

language = "English",

volume = "8",

pages = "57--65",

journal = "Applied Magnetic Resonance",

issn = "0937-9347",

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TY - JOUR

T1 - 199Hg and63,65Cu NMR studies of mercury based high-Tc superconductors

AU - Hoffmann, W.

AU - Breitzke, H.

AU - Simmons, C. T.

AU - Lüders, K.

AU - Buntkowsky, G.

AU - Limbach, H. H.

AU - Antipov, E. V.

AU - Gippius, A. A.

AU - Loebich, O.

AU - Khan, H. R.

AU - Paranthaman, M.

AU - Thompson, J. R.

PY - 1995/1

Y1 - 1995/1

N2 - Hg-oxide ceramic high temperature superconductors were studied by199Hg and63,65Cu NMR spectroscopy. Room temperature spectra, spin-spin and spin-lattice relaxation times of samples with different superconducting transition temperatures are presented. A spin-lattice relaxation time of T1=35 msec and a spin-spin relaxation time of T2=1.6 msec were found for the199Hg NMR. All samples exhibit similar characteristic powder spectra caused by an axially symmetric199Hg spin interaction. The isotropic value and the anisotropy of the tensor relative to solid HgCl2 as a standard substance is estimated. Furthermore, results of63,65Cu NMR measurements at a temperature of 4.2 K which exhibit a typical powder line shape (for I=3/2) are presented.

AB - Hg-oxide ceramic high temperature superconductors were studied by199Hg and63,65Cu NMR spectroscopy. Room temperature spectra, spin-spin and spin-lattice relaxation times of samples with different superconducting transition temperatures are presented. A spin-lattice relaxation time of T1=35 msec and a spin-spin relaxation time of T2=1.6 msec were found for the199Hg NMR. All samples exhibit similar characteristic powder spectra caused by an axially symmetric199Hg spin interaction. The isotropic value and the anisotropy of the tensor relative to solid HgCl2 as a standard substance is estimated. Furthermore, results of63,65Cu NMR measurements at a temperature of 4.2 K which exhibit a typical powder line shape (for I=3/2) are presented.

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U2 - 10.1007/BF03162586

DO - 10.1007/BF03162586

M3 - Article

AN - SCOPUS:18244368837

SN - 0937-9347

VL - 8

SP - 57

EP - 65

JO - Applied Magnetic Resonance

JF - Applied Magnetic Resonance

IS - 1

ER -

¹⁹⁹Hg and^63,65Cu NMR studies of mercury based high-T_c superconductors

Abstract

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