VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • ▫$^{87}Rb$▫ NMR study of the incommensurate phase transition in ▫$Rb_2ZnCl_4$▫
    Osredkar, Radko ...
    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 ... incommensurate (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 ▫$1/2 \to -1/2$▫ 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.
    Vir: Ferroelectrics. - ISSN 0015-0193 (Vol. 24, 1980, str. 147-149)
    Vrsta gradiva - članek, sestavni del
    Leto - 1980
    Jezik - angleški
    COBISS.SI-ID - 3221526

vir: Ferroelectrics. - ISSN 0015-0193 (Vol. 24, 1980, str. 147-149)
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