Дослідження полярних нанокластерів у твердих розчинах (PMN)1−x−(PT)x методом ЯМР
The investigation of NMR spectra of ²⁰⁷Pb and ⁹³Nb nuclei in the relaxor ferroelectric ceramics PbMg₁/₃Nb₂/₃O₃ and a solid solution (1−x) PbMg₁/₃Nb₂/₃O₃₋xPbTiO₃ is carried out. The basic mechanisms (chemical shift, quadrupole coupling) determining the characteristics of ²⁰⁷Pb and ⁹³Nb resonance spec...
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| Datum: | 2008 |
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| ISSN: | 1025-6415 |
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | Ukrainisch |
| Veröffentlicht: |
Видавничий дім "Академперіодика" НАН України
2008
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| Schlagworte: | |
| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/4736 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Дослідження полярних нанокластерів у твердих розчинах (PMN)1−x−(PT)x методом ЯМР / М.Д. Глинчук, І.П. Биков, В.В. Лагута // Доп. НАН України. — 2008. — № 6. — С. 66-74. — Бібліогр.: 15 назв. — укр. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | The investigation of NMR spectra of ²⁰⁷Pb and ⁹³Nb nuclei in the relaxor ferroelectric ceramics PbMg₁/₃Nb₂/₃O₃ and a solid solution (1−x) PbMg₁/₃Nb₂/₃O₃₋xPbTiO₃ is carried out. The basic mechanisms (chemical shift, quadrupole coupling) determining the characteristics of ²⁰⁷Pb and ⁹³Nb resonance spectra are studied. Spin-spin and spin-lattice relaxations for ²⁰⁷Pb ions (spin 1/2) in these materials are measured for the first time. It is established that fluctuations of the orientations and the sizes of polar nanoclusters are the main reasons of both the dielectric relaxation and the nuclear magnetization relaxation.
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| ISSN: | 1025-6415 |