한국자기공명학회논문지 (Journal of the Korean Magnetic Resonance Society)

한국자기공명학회 (Korean Magnetic Resonance Society)
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Nuclear Magnetic Resonance Study of the Raman Spin-Phonon Processes in the Relaxation Mechanisms of Double Sulfate Li3Rb(SO4)2 Single Crystals

  • Heo, Cheol (School of Energy and Integrated Materials Engineering, Kumoh National Institute of Technology) ;
  • Lim, Ae-Ran (Department of Science Education, Jeonju University)
  • 투고 : 2011.05.01
  • 심사 : 2011.05.27
  • 발행 : 2011.06.20
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초록

The NMR spectra of $Li_3Rb(SO_4)_2$ crystals and their relaxation processes were investigated by using $^7Li$ and $^{87}Rb$ NMR. The relaxation rates of the $^7Li$ and $^{87}Rb$ nuclei in the crystals were found to increase with increasing temperature, and can be described by the relation $T_1^{-1}{\propto}AT^2$. The dominant relaxation mechanism for these nuclei with electric quadrupole moments is provided by the coupling of these moments to the thermal fluctuations of the local electric field gradient via Raman spin-phonon processes.

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참고문헌

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