Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Eero Ylinen"'
Publikováno v:
Solid State Nuclear Magnetic Resonance. 93:7-15
We studied deuteron NMR spectra and spin−lattice relaxation of deuterated acetone-d 6 , adsorbed into zeolites NaX (1.3) and NaY(2.4) at 100% coverage of sodium cations. At temperatures roughly below 160 K the deuterons are localized and their NMR
Autor:
Matti Punkkinen, G. Stoch, Kinga Góra-Marek, Eero Ylinen, Jerzy Datka, Maciej Krzystyniak, Z.T. Lalowicz, A. Birczyński
Publikováno v:
Solid State Nuclear Magnetic Resonance. :66-74
Nuclear magnetic resonance (NMR) provides means to investigate molecular dynamics at every state of matter. Features characteristic for the gas phase, liquid-like layers and immobilized methanol-d 4 molecules in NaX and NaY zeolites were observed in
Publikováno v:
Technical Physics. 56:381-385
The nonlinear behavior of a phonon echo signal in high-temperature superconductors is studied experimentally. It is demonstrated that conventional consideration of anharmonic effects is insufficient for comprehensive explanation of the echo signal be
Autor:
Matti Punkkinen, Eero Ylinen
Publikováno v:
Solid State Nuclear Magnetic Resonance. 35:172-179
Deuteron spin-lattice relaxation via the motion-dependent part of the electric quadrupole interaction is discussed in partly and fully deuterated ammonium ions of ammonium hexachlorometallates. The dominant motion at temperatures T50K is normally 120
Publikováno v:
Solid State Nuclear Magnetic Resonance. 35:180-186
Deuteron NMR spectra and relaxation were studied at the resonance frequency of 46 MHz in polycrystalline fully and partly deuterated ( NH 4 ) 2 ZnCl 4 between 300 and 5 K. Spectral components confirm existence of ammonium positions with different pot
Publikováno v:
Solid State Nuclear Magnetic Resonance. 34:77-85
Deuteron spin-lattice relaxation and spectra were studied in partially and fully deuterated ( NH 4 ) 2 PdCl 6 in the temperature range 5–300 K. The relaxation rate maximum was observed at 45 K in ( ND 4 ) 2 PdCl 6 . Its value is reduced due to limi
Autor:
A. P. Paugurt, Eero Ylinen, Vladimir V. Matveev, A. A. Nechitaĭlov, Ya. A. Fofanov, I. V. Pleshakov
Publikováno v:
Technical Physics Letters. 33:1050-1053
Polycrystalline high-temperature superconductors (HTSCs) containing iron and gadolinium ions have been studied using the phonon echo technique, whereby a powdered sample is probed by a special sequence of RF pulses and the response having an acoustic
Publikováno v:
Chemical Physics. 327:119-126
Deuteron spin–lattice relaxation is studied in 5% and 100% deuterated ammonium hexachlorostannate and perchlorate. The relaxation rate is observed to be independent of deuteration down to temperatures slightly lower than that of the maximum. At low
Publikováno v:
Physica B: Condensed Matter. 357:456-471
Proton spin-lattice relaxation is studied in partly deuterated ammonium compounds at low temperatures. A model is proposed for the NH3D+ related contribution, which increases the relaxation rate many times larger than in nondeuterated samples. The mo
Publikováno v:
Solid State Nuclear Magnetic Resonance. 25:133-137
Proton magnetic resonance absorption spectra of yttrium dihydride (YH2+x), with x=0.10, were recorded in the temperature ranges 4.2–310 K at 36.01 MHz and 150–400 K at 299.8 MHz. The evidence of proton self-diffusion follows from the changes of l