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      KCI등재 SCI SCIE SCOPUS

      1H NMR Measurements of the Phase Transition of (NH₄)₃H(SO₄)₂ Single Crystals

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      https://www.riss.kr/link?id=A104336385

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      다국어 초록 (Multilingual Abstract)

      $^1$H nuclear magnetic resonance (NMR) experiments have been
      performed in the temperature range of 30 -- 300 K at 7 T to
      investigate the phase-dependent nature of the dynamic network of
      hydrogen bonds in a ((NH₄)₃H(SO₄)₂ single crystal. The
      crystal has six phases, which are ferroelectric, antiferroelectric,
      incommensurate, antiferroelectric, ferroelastic, and superionic with
      the respective transition temperatures of 63, 133, 139, 256 and 413
      K. The spin-lattice relaxation time, T₁, of ¹H NMR is similar
      for the ammonium protons and the hydrogen-bond protons over the
      entire range of experimental temperatures. The T₁, of ¹H NMR
      gradually decreases down to 120 K and starts to steeply increase
      below 100 K. Then, the T₁ shows an abrupt decrease below 68 K
      with a sharp minimum at 63 K, where the ferroelectric transition
      occurs. The ¹H NMR spectrum shifts to the high-frequency side at
      temperatures below 63 K due to the ferroelectric phase transition.
      This behavior of the T₁ and the spectrum confirms a dramatic
      change in the dynamics of hydrogen bonds associated with the
      ferroelectric phase transition at 63 K.
      번역하기

      $^1$H nuclear magnetic resonance (NMR) experiments have been performed in the temperature range of 30 -- 300 K at 7 T to investigate the phase-dependent nature of the dynamic network of hydrogen bonds in a ((NH₄)₃H(SO₄)₂ single crystal. The cr...

      $^1$H nuclear magnetic resonance (NMR) experiments have been
      performed in the temperature range of 30 -- 300 K at 7 T to
      investigate the phase-dependent nature of the dynamic network of
      hydrogen bonds in a ((NH₄)₃H(SO₄)₂ single crystal. The
      crystal has six phases, which are ferroelectric, antiferroelectric,
      incommensurate, antiferroelectric, ferroelastic, and superionic with
      the respective transition temperatures of 63, 133, 139, 256 and 413
      K. The spin-lattice relaxation time, T₁, of ¹H NMR is similar
      for the ammonium protons and the hydrogen-bond protons over the
      entire range of experimental temperatures. The T₁, of ¹H NMR
      gradually decreases down to 120 K and starts to steeply increase
      below 100 K. Then, the T₁ shows an abrupt decrease below 68 K
      with a sharp minimum at 63 K, where the ferroelectric transition
      occurs. The ¹H NMR spectrum shifts to the high-frequency side at
      temperatures below 63 K due to the ferroelectric phase transition.
      This behavior of the T₁ and the spectrum confirms a dramatic
      change in the dynamics of hydrogen bonds associated with the
      ferroelectric phase transition at 63 K.

      더보기

      다국어 초록 (Multilingual Abstract)

      $^1$H nuclear magnetic resonance (NMR) experiments have been
      performed in the temperature range of 30 -- 300 K at 7 T to
      investigate the phase-dependent nature of the dynamic network of
      hydrogen bonds in a ((NH₄)₃H(SO₄)₂ single crystal. The
      crystal has six phases, which are ferroelectric, antiferroelectric,
      incommensurate, antiferroelectric, ferroelastic, and superionic with
      the respective transition temperatures of 63, 133, 139, 256 and 413
      K. The spin-lattice relaxation time, T₁, of ¹H NMR is similar
      for the ammonium protons and the hydrogen-bond protons over the
      entire range of experimental temperatures. The T₁, of ¹H NMR
      gradually decreases down to 120 K and starts to steeply increase
      below 100 K. Then, the T₁ shows an abrupt decrease below 68 K
      with a sharp minimum at 63 K, where the ferroelectric transition
      occurs. The ¹H NMR spectrum shifts to the high-frequency side at
      temperatures below 63 K due to the ferroelectric phase transition.
      This behavior of the T₁ and the spectrum confirms a dramatic
      change in the dynamics of hydrogen bonds associated with the
      ferroelectric phase transition at 63 K.
      번역하기

      $^1$H nuclear magnetic resonance (NMR) experiments have been performed in the temperature range of 30 -- 300 K at 7 T to investigate the phase-dependent nature of the dynamic network of hydrogen bonds in a ((NH₄)₃H(SO₄)₂ single crystal. The...

      $^1$H nuclear magnetic resonance (NMR) experiments have been
      performed in the temperature range of 30 -- 300 K at 7 T to
      investigate the phase-dependent nature of the dynamic network of
      hydrogen bonds in a ((NH₄)₃H(SO₄)₂ single crystal. The
      crystal has six phases, which are ferroelectric, antiferroelectric,
      incommensurate, antiferroelectric, ferroelastic, and superionic with
      the respective transition temperatures of 63, 133, 139, 256 and 413
      K. The spin-lattice relaxation time, T₁, of ¹H NMR is similar
      for the ammonium protons and the hydrogen-bond protons over the
      entire range of experimental temperatures. The T₁, of ¹H NMR
      gradually decreases down to 120 K and starts to steeply increase
      below 100 K. Then, the T₁ shows an abrupt decrease below 68 K
      with a sharp minimum at 63 K, where the ferroelectric transition
      occurs. The ¹H NMR spectrum shifts to the high-frequency side at
      temperatures below 63 K due to the ferroelectric phase transition.
      This behavior of the T₁ and the spectrum confirms a dramatic
      change in the dynamics of hydrogen bonds associated with the
      ferroelectric phase transition at 63 K.

      더보기

      참고문헌 (Reference)

      1 M. Kamoun, 9 : 247-, 1987

      2 L. S. Smirnov, 43 : 117-, 2001

      3 R. H. Chen, 37 : 141-, 1992

      4 K. Sooryanarayana, 58 : 263-, 1996

      5 V. G. Ponomareva, 145 : 205-, 2001

      6 A. R. Lim, 18 : 6759-, 2006

      7 S. Suzuki, 34 : 732-, 1978

      8 P. A. Leclaire, 41 : 209-, 1985

      9 T. Fukami, 35 : 2253-, 1996

      10 I. Tamura, 60 : 1411-, 1999

      1 M. Kamoun, 9 : 247-, 1987

      2 L. S. Smirnov, 43 : 117-, 2001

      3 R. H. Chen, 37 : 141-, 1992

      4 K. Sooryanarayana, 58 : 263-, 1996

      5 V. G. Ponomareva, 145 : 205-, 2001

      6 A. R. Lim, 18 : 6759-, 2006

      7 S. Suzuki, 34 : 732-, 1978

      8 P. A. Leclaire, 41 : 209-, 1985

      9 T. Fukami, 35 : 2253-, 1996

      10 I. Tamura, 60 : 1411-, 1999

      11 M. Kamoun, 44 : 471-, 1988

      12 K. Gesi, 33 : 479-, 1976

      13 K. Gesi, 43 : 1941-, 1977

      14 M. Fujimoto, 46 : 227-, 1983

      15 T. Fukami, 98 : 105-, 1997

      16 P. M. Dominiak, 42 : 1590-, 2003

      17 F. Fillaux, 154 : 135-, 1991

      18 Junko Hatori, "Spin-Lattice Relaxation in Pyridazine Perchlorate (C4H4N2)HClO4" 한국물리학회 51 (51): 832-835, 2007

      19 E. Fukushima, "Experimental Pulse NMR" Addison-Wesley 1981

      20 B. J. Suh, "Antisite Disorder and Superparamagnetism in Heusler-like Fe$_2$VAl: A $^{51}$V and $^{27}$Al NMR Study" 한국물리학회 48 (48): 288-292, 2006

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      학술지 이력

      학술지 이력
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      2023 평가예정 해외DB학술지평가 신청대상 (해외등재 학술지 평가)
      2020-01-01 평가 등재학술지 유지 (해외등재 학술지 평가) KCI등재
      2011-01-01 평가 등재학술지 유지 (등재유지) KCI등재
      2009-01-01 평가 등재학술지 유지 (등재유지) KCI등재
      2007-01-01 평가 SCI 등재 (등재유지) KCI등재
      2005-01-01 평가 등재학술지 유지 (등재유지) KCI등재
      2002-07-01 평가 등재학술지 선정 (등재후보2차) KCI등재
      2000-01-01 평가 등재후보학술지 선정 (신규평가) KCI등재후보
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      기준연도 WOS-KCI 통합IF(2년) KCIF(2년) KCIF(3년)
      2016 0.47 0.15 0.31
      KCIF(4년) KCIF(5년) 중심성지수(3년) 즉시성지수
      0.26 0.2 0.26 0.03
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