Zobrazeno 1 - 10
of 187
pro vyhledávání: '"Verkhovskii S."'
Autor:
Trokiner, A., Verkhovskii, S., Gerashenko, A., Volkova, Z., Anikeenok, O., Mikhalev, K., Eremin, M.
The Mn spin correlations were studied near the O'-O phase transition at T{JT} = 750 K, up to 950 K with 17O and 139La NMR in a stoichiometric LaMnO3 crystalline sample. The measured local hyperfine fields originate from the electron density transfere
Externí odkaz:
http://arxiv.org/abs/1303.3112
We present the synthesis and the NMR characterization of a 17O enriched LaMnO3 crystalline sample. We checked that it is single phase and, more important, stochiometric in oxygen. Its 17O enrichment estimated by NMR is about 5.5%. These first 17O NMR
Externí odkaz:
http://arxiv.org/abs/1107.0811
Autor:
Gerashenko, A., Verkhovskii, S., Karkin, A., Voronin, V., Kazantsev, A., Goshchitskii, B., Werner, J., Behr, G.
The effect of atomic disorder induced by neutron irradiation on the crystal structure and electronic states near $E_F$ of the lightly overdoped LaFeAsO$_{0.85}$F$_{0.15}$ ($T_c=21K$) was studied by X-ray diffraction and $^{75}$As NMR. The irradiation
Externí odkaz:
http://arxiv.org/abs/0911.2127
Autor:
Trokiner, A., Verkhovskii, S., Yakubovskii, A., Kumagai, K., Cheong, S-W., Khomskii, D., Furukawa, Y., Ahn, J. S., Pogudin, A., Ogloblichev, V., Gerashenko, A., Mikhalev, K., Piskunov, Yu.
We present a $^{209}$Bi and $^{17}$O NMR study of the Mn electron spin correlations developed in the charge ordered state of Bi$_{0.5}$Sr$_{0.5}$MnO$_{3}$ and Bi$_{0.5}$Ca$_{0.5}$MnO$_{3}$. The unusually large local magnetic field $^{209}H_{loc}$ ind
Externí odkaz:
http://arxiv.org/abs/cond-mat/0503499
Autor:
Piskunov, Yu., Mikhalev, K., Gerashenko, A., Pogudin, A., Ogloblichev, V., Verkhovskii, S., Tankeyev, A., Arkhipov, V., Zouev, Yu., Lekomtsev, S.
Spin susceptibility of stabilized \delta phase in the Pu-Ga alloy is studied by measuring {69,71}^Ga NMR spectra and nuclear spin-lattice relaxation rate {69}T_{1}^{-1} in the temperature range 5 - 350 K. The shift ({69}^K) of the {69,71}^Ga NMR line
Externí odkaz:
http://arxiv.org/abs/cond-mat/0404460
Autor:
Verkhovskii, S. V., Yakubovsky, A. Yu., Malkin, B. Z., Saikin, S. K., Cardona, M., Trokiner, A., Ozhogin, V. I.
Publikováno v:
Phys. Rev. B 68, 104201 (2003)
NMR spectra of 73 Ge (nuclear spin I = 9/2) in germanium single crystals with different isotopic compositions have been measured at the frequency of 17.4 MHz at room temperature. Due to the small concentration (~0.1%) of the magnetic (73 Ge) isotope,
Externí odkaz:
http://arxiv.org/abs/cond-mat/0306381
An influence of the 16O-18O isotope substitutions on magnetic state of perovskite-type manganite (La0.25Pr0.75)0.7Ca0.3MnO3 is studied by 55Mn NMR. Successive cycling with an isochronal exposure at different magnetic fields up to H=8T is used to stud
Externí odkaz:
http://arxiv.org/abs/cond-mat/0209484
The charge and orbital ordering in Pr_{0.5} Ca_{0.5} MnO_3 is studied for the first time by ^{17}O NMR. This local probe is sensitive to spin, charge and orbital correlations. Two transitions exist in this system: the charge and orbital ordering at T
Externí odkaz:
http://arxiv.org/abs/cond-mat/0208592
NMR line shift and nuclear spin-lattice relaxation rate T_1^{-1} of 11B and 25Mg were measured in superconducting MgB_2 (T_c^{ons}=38K) structurally disordered by nuclear reactor neutrons up to the fluence of thermal neutrons $\Phi=1 10^{19} cm^{-2}.
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110158
Autor:
Piskunov, Yu., Gerashenko, A., Pogudin, A., Ananyev, A., Mikhalev, K., Okulova, K., Verkhovskii, S., Yakubovsky, A., Trokiner, A.
The 17O and 207Pb NMR spectra were measured in ceramic samples in the metallic phase of BaPb_{1-x}Bi_{x}O_3 oxides (0
Externí odkaz:
http://arxiv.org/abs/cond-mat/0106431