NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal
The temperature dependence of the proton spin-lattice relaxation time T₁ has been studied in ferroelectric KIO₃*2HIO₃ crystal. It is shown that the proton jumping along 0—H....0 contact has been shown to be the main relaxation mechanism. At temperatures exceeding the phase transition one, e>Tc, t...
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| Veröffentlicht in: | Functional Materials |
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| Datum: | 2008 |
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | Englisch |
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НТК «Інститут монокристалів» НАН України
2008
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| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/137248 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal / D.F. Baisa, E.D. Chesnokov, A.I. Ovcharenko, I.G. Vertegel // Functional Materials. — 2008. — Т. 15, № 1. — С. 19-22. — Бібліогр.: 8 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862647782407405568 |
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| author | Baisa, D.F. Chesnokov, E.D. Ovcharenko, A.I. Vertegel, I.G. |
| author_facet | Baisa, D.F. Chesnokov, E.D. Ovcharenko, A.I. Vertegel, I.G. |
| citation_txt | NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal / D.F. Baisa, E.D. Chesnokov, A.I. Ovcharenko, I.G. Vertegel // Functional Materials. — 2008. — Т. 15, № 1. — С. 19-22. — Бібліогр.: 8 назв. — англ. |
| collection | DSpace DC |
| container_title | Functional Materials |
| description | The temperature dependence of the proton spin-lattice relaxation time T₁ has been studied in ferroelectric KIO₃*2HIO₃ crystal. It is shown that the proton jumping along 0—H....0 contact has been shown to be the main relaxation mechanism. At temperatures exceeding the phase transition one, e>Tc, the proton relaxation is caused by the motion thereof in symmetric two-well potential of the hydrogen bond with activation energy Ec = 3.4 kcal/mol. At T<Tc, the proton ordering in asymmetric two-well potential occurs with activation energies Ea1 = 4.1 kcal/mol and Ea2 = 2.5 kcal/mol. Evaluation of equilibrium constant value a = p₁/p₁, where p₁ and p₁ are the probabilities of proton being in position "1" or "2" of double-well potential near Tc, gives the value a≈40, but yet at Tc,—T ≈ 50 K, a≈450, thus evidencing a high proton ordering degree on H-bond below the phase transition.
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| first_indexed | 2025-12-01T13:57:34Z |
| format | Article |
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| id | nasplib_isofts_kiev_ua-123456789-137248 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1027-5495 |
| language | English |
| last_indexed | 2025-12-01T13:57:34Z |
| publishDate | 2008 |
| publisher | НТК «Інститут монокристалів» НАН України |
| record_format | dspace |
| spelling | Baisa, D.F. Chesnokov, E.D. Ovcharenko, A.I. Vertegel, I.G. 2018-06-17T09:20:29Z 2018-06-17T09:20:29Z 2008 NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal / D.F. Baisa, E.D. Chesnokov, A.I. Ovcharenko, I.G. Vertegel // Functional Materials. — 2008. — Т. 15, № 1. — С. 19-22. — Бібліогр.: 8 назв. — англ. 1027-5495 https://nasplib.isofts.kiev.ua/handle/123456789/137248 The temperature dependence of the proton spin-lattice relaxation time T₁ has been studied in ferroelectric KIO₃*2HIO₃ crystal. It is shown that the proton jumping along 0—H....0 contact has been shown to be the main relaxation mechanism. At temperatures exceeding the phase transition one, e>Tc, the proton relaxation is caused by the motion thereof in symmetric two-well potential of the hydrogen bond with activation energy Ec = 3.4 kcal/mol. At T<Tc, the proton ordering in asymmetric two-well potential occurs with activation energies Ea1 = 4.1 kcal/mol and Ea2 = 2.5 kcal/mol. Evaluation of equilibrium constant value a = p₁/p₁, where p₁ and p₁ are the probabilities of proton being in position "1" or "2" of double-well potential near Tc, gives the value a≈40, but yet at Tc,—T ≈ 50 K, a≈450, thus evidencing a high proton ordering degree on H-bond below the phase transition. en НТК «Інститут монокристалів» НАН України Functional Materials Characterization and properties NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal ЯМР дослідження динаміки протонів у сегнетоелектричному кристалі KIO₃*2HIO₃ Article published earlier |
| spellingShingle | NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal Baisa, D.F. Chesnokov, E.D. Ovcharenko, A.I. Vertegel, I.G. Characterization and properties |
| title | NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal |
| title_alt | ЯМР дослідження динаміки протонів у сегнетоелектричному кристалі KIO₃*2HIO₃ |
| title_full | NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal |
| title_fullStr | NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal |
| title_full_unstemmed | NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal |
| title_short | NMR study of proton dynamics in ferroelectric KIO₃*2HIO₃ crystal |
| title_sort | nmr study of proton dynamics in ferroelectric kio₃*2hio₃ crystal |
| topic | Characterization and properties |
| topic_facet | Characterization and properties |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/137248 |
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