Email this article Resonance Frequency and NMR Relaxation Times in Two Inequivalent 133Cs in Cs2CuBr4 and Cs2ZnBr4 Single Crystals
- Authors: Lim A.R.1,2
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Affiliations:
- Analytical Laboratory of Advanced Ferroelectric Crystals, Jeonju University
- Department of Science Education, Jeonju University
- Issue: Vol 48, No 9 (2017)
- Pages: 889-899
- Section: Original Paper
- URL: https://journals.rcsi.science/0937-9347/article/view/247830
- DOI: https://doi.org/10.1007/s00723-017-0911-z
- ID: 247830
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Abstract
The resonance frequencies and relaxation mechanisms of Cs2CuBr4 and Cs2ZnBr4 were examined by static nuclear magnetic resonance (NMR) method. Here, the two inequivalent Cs(1) and Cs(2) sites surrounded by Br ions were distinguished. The saturation recovery traces for 133Cs nuclei in Cs2CuBr4 with the paramagnetic ions, and those in Cs2ZnBr4 without the paramagnetic ions were each fitted by four exponential functions. From these results, the spin–lattice relaxation times T1 in the laboratory frame of 133Cs nuclei in the two crystals were obtained, and Cs(1) surrounded by 11 bromide ions has a longer relaxation time than Cs(2) surrounded by 9 bromide ions.
About the authors
Ae Ran Lim
Analytical Laboratory of Advanced Ferroelectric Crystals, Jeonju University; Department of Science Education, Jeonju University
Author for correspondence.
Email: aeranlim@hanmail.net
Korea, Republic of, Jeonju, 55069; Jeonju, 55069
