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Hg-199 and Cu-65,Cu-65 Nmr-Studies of Mercury Based High-T-C Supercouductors

Hoffmann, W. and Breitzke, H. and Simmons, C. T. and Lüders, K. and Buntkowsky, G. and Limbach, H. H. and Antipov, E. V. and Gippius, A. A. and Loebich, O. and Khan, H. R. and Paranthaman, M. and Thompson, J. R. (1995):
Hg-199 and Cu-65,Cu-65 Nmr-Studies of Mercury Based High-T-C Supercouductors.
In: Applied Magnetic Resonance, pp. 57-65, 8, (1), [Online-Edition: http://apps.webofknowledge.com/full_record.do?product=WOS&se...],
[Article]

Abstract

Hg-oxide ceramic high temperature superconductors were studied by Hg-199 and (CU)-C-63,65 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 T-1 = 35 msec and a spin-spin relaxation time of T-2 = 1.6 msec were found for the Hg-199 NMR. All samples exhibit similar characteristic powder spectra caused by an axially symmetric Hg-199 spin interaction. The isotropic value and the anisotropy of the tenser relative to solid HgCl2 as a standard substance is estimated. Furthermore, results of (CU)-C-63,65 NMR measurements at a temperature of 4.2 K which exhibit a typical powder line shape (for I = 3/2) are presented.

Item Type: Article
Erschienen: 1995
Creators: Hoffmann, W. and Breitzke, H. and Simmons, C. T. and Lüders, K. and Buntkowsky, G. and Limbach, H. H. and Antipov, E. V. and Gippius, A. A. and Loebich, O. and Khan, H. R. and Paranthaman, M. and Thompson, J. R.
Title: Hg-199 and Cu-65,Cu-65 Nmr-Studies of Mercury Based High-T-C Supercouductors
Language: English
Abstract:

Hg-oxide ceramic high temperature superconductors were studied by Hg-199 and (CU)-C-63,65 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 T-1 = 35 msec and a spin-spin relaxation time of T-2 = 1.6 msec were found for the Hg-199 NMR. All samples exhibit similar characteristic powder spectra caused by an axially symmetric Hg-199 spin interaction. The isotropic value and the anisotropy of the tenser relative to solid HgCl2 as a standard substance is estimated. Furthermore, results of (CU)-C-63,65 NMR measurements at a temperature of 4.2 K which exhibit a typical powder line shape (for I = 3/2) are presented.

Journal or Publication Title: Applied Magnetic Resonance
Volume: 8
Number: 1
Uncontrolled Keywords: o system superconductivity nqr hgba2cacu2o6+delta hgba2cuo4+delta ba2ycu3o7 shifts 150-k salts
Divisions: 07 Department of Chemistry
07 Department of Chemistry > Physical Chemistry
Date Deposited: 27 Oct 2014 20:43
Official URL: http://apps.webofknowledge.com/full_record.do?product=WOS&se...
Additional Information:

Qm199 Times Cited:3 Cited References Count:21

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