한국자기공명학회논문지 (Journal of the Korean Magnetic Resonance Society)

한국자기공명학회 (Korean Magnetic Resonance Society)
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^1H NMR Relaxation Study of Molecular Motion in the Paraelectric Phase of (NH4)2Cd2(SO4)3 Single Crystals

  • Lim, Ae-Ran (Department of Science Education, Jeonju University) ;
  • Jung, Won-Ki (School of Electrical Engineering Jeonju University)
  • 투고 : 2010.04.13
  • 발행 : 2010.06.20
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초록

The NMR spectrum and spin-lattice relaxation times, $T_1$, of the $^{1}H$ nuclei in $(NH_{4})_{2}Cd_{2}(SO_{4})_{3}$ single crystals were obtained. The two minima in $T_1$ in the paraelectric phase are attributed to the reorientational motions of the $NH_{4}^{+}$ groups. The $^{1}H\;T_1$ of the $(NH_{4})_{2}Cd_{2}(SO_{4})_{3}$ crystals can be described with Bloembergen- Purcell-Pound (BPP) theory. The experimental value of $T_1$ can be expressed in terms of an isotropic correlation time ${\tau}_H$ for molecular motions by using the BPP theory, and determine the role of protons in these processes.

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참고문헌

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피인용 문헌

  1. Nuclear Magnetic Resonance Study of the Raman Spin-Phonon Processes in the Relaxation Mechanisms of Double Sulfate Li3Rb(SO4)2Single Crystals vol.15, pp.1, 2011, https://doi.org/10.6564/JKMRS.2011.15.1.040