Rb [sup] 87 NMR study of the incommensurate phase transition in Rb [sub] 2 ZnCl [sub] 4 /
The temperature dependence of the ▫$^{87}$▫Rb quadropole perturbed NMR spectra and spin-lattice relaxation rates has been measured in the high temperature paraelectric (P), the intermediate incomensurate (I) and the low temperature commensurate (C) ferroelectric phase. The obtained data show the pre...
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| Main Authors: | , , , , |
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| Format: | Book Chapter |
| Jezik: | English |
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| Sorodne knjige/članki: | Vsebovano v:
Ferroelectrics |
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| LEADER | 01755naa a2200241 ib4500 | ||
|---|---|---|---|
| 001 | 3221526 | ||
| 003 | SI-MaCOB | ||
| 005 | 19980109000000.0 | ||
| 008 | 971127s1980 xxu|||||||||||||| ||eng c | ||
| 040 | |a KTFMB |b slv |c SI-MaIIZ |d KTFMB |e ppiak | ||
| 080 | |a 53 | ||
| 245 | 1 | 0 | |a Rb [sup] 87 NMR study of the incommensurate phase transition in Rb [sub] 2 ZnCl [sub] 4 / |c R. Osredkar ... [et al.]. |
| 300 | |a str. 147-149. | ||
| 500 | |a Soavtorji: S. Južnič, V. Rutar, J. Seliger, R. Blinc. | ||
| 520 | |a The temperature dependence of the ▫$^{87}$▫Rb quadropole perturbed NMR spectra and spin-lattice relaxation rates has been measured in the high temperature paraelectric (P), the intermediate incomensurate (I) and the low temperature commensurate (C) ferroelectric phase. The obtained data show the presence of commensurate domains separated by broad incommensurate domain walls in the I phase. The spin-lattice relaxation rates of the ▫${87}▫$Rb 1/2 -> -1/2 transitions are dominated by the soft mode in the P phase whereas an anomalously strong, nearly temperature independent contribution dominates ▫${T_1}^-1$▫ in the I phase. This contribution which disappears on going to the ferroelectric C phase seems to represent the first direct observation of a phason in an incommensurate ferroelectric. | ||
| 653 | 0 | |a nuclear magnetic resonance |a phase transition |a ferroelectric phase |a spin-lattice relaxation | |
| 653 | 0 | |a elektromagnetna resonanca |a spini |a NMR |a fazni prehodi | |
| 700 | 1 | 2 | |a Osredkar, Radko. |4 aut |
| 700 | 1 | 2 | |a Južnič, Stašo. |4 aut |
| 700 | 1 | 2 | |a Rutar, Venceslav. |4 aut |
| 700 | 1 | 2 | |a Seliger, Janez. |4 aut |
| 700 | 1 | 2 | |a Blinc, Robert. |4 aut |
| 773 | 0 | |t Ferroelectrics |d New York : Gordon and Breach |x 0015-0193 |g Vol. 24 (1980), str. 147-149 | |