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  • 1
    Electronic Resource
    Electronic Resource
    Transient thermoelectric effects in intercalation compounds MxTiS2 (M=3d transition metals) (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 2267-2272 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Simultaneous measurements of thermal diffusion processes of electrons and phonons in 1T-TiS2 and intercalation compounds MxTiS2 (M=Mn, Fe, Co, and Ni; x=0.1–1/3) have been made in the temperature range 78–280 K using a pulsed laser-induced "transient thermoelectric (TTE)'' or photodiffusion effect. The initial stage of the decay curves of TTE voltage observed solely in TiS2 gives the electron-hole recombination times τr, from which capture cross sections are evaluated. At the second stage, two relaxation times (τf and τs) are observed in all crystals; the fast and slow components are associated with the intra- and intervalley scatterings through electron-phonon interactions, respectively. The evaluation of the final stage yields the thermal diffusion coefficient DT and thermal conductivity κ of these materials. The effect of intercalation of the guest 3d metals on these quantities is qualitatively discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337988
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic scattering of conduction carriers in 3d transition-metal intercalates of M x TiS2 (M=Mn, Fe, Co, and Ni) (1990)
    Springer
    Journal of low temperature physics 78 (1990), S. 141-154 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Galvanomagnetic measurements on layer-structured 3d transition-metal intercalates of MxTiS2 (M = Mn, Fe, Co, and Ni;x≤0.33) have been made over the temperature range 0.34–20 K. Resistivity minima and negative magneto-resistances are observed for paramagnetic Mn, Fe, and Ni intercalates with low guest concentrations (x≤0.1), as found in well-known dilute alloys. However, in the case of the weak-ferromagnetic phase of CoxTiS2 (0.10≤x≤0.33) with the Curie temperatureT c =120–140 K, such anomalous behaviors are also observed, which is not commonly found in the magnetically ordered phases of various magnetic materials. With these data we have given qualitative discussions on the magnetic scattering process of conduction carriers. Further, some of the experimental results are discussed in connection with the band calculations for M1/3TiS2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00682113
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  • 3
    Electronic Resource
    Electronic Resource
    Low temperature specific heat of intercalation compounds M x TiS2 (M = 3d transition metals) (1994)
    Springer
    Journal of low temperature physics 97 (1994), S. 335-345 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Specific heats of intercalation compounds Fex TiS2 (x = 0–1/3) and M1/4 TiS2 (M = Mn, Fe, Co and Ni) have been measured in the temperature range 0.35–5 K using an ac calorimetry method. The temperature dependence of the specific heats for these materials is written as the sum of electronic, lattice and anomalous terms. The anomalous specific heats show a Schottky type behavior, which is due to a very small amount of localized 3d atoms with crystal-field splittings, but the remaining majority of the intercalated guest 3d atoms are regarded as having itinerant electron character that contributes to the enhancement of the density of states at the Fermi energy or of electronic specific heat coefficient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00752922
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  • 4
    Electronic Resource
    Electronic Resource
    Lattice dynamic study on 3d transition metal intercalates M x TiS2 (M=Mn, Fe, Co, and Ni) using point-contact spectroscopy (1988)
    Springer
    Journal of low temperature physics 73 (1988), S. 459-468 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The derivatives of the current-voltage characteristics of a homojunction point contact of 1T-CdI2-type layered crystal TiS2 and its intercalation compounds M1/4TiS2 (M=Mn, Fe, Co, and Ni) have been measured at 1.4 K. With reference to the available data on lattice dynamics, we have identified various inter- and intralayer acoustic and optical phonon modes. The acoustic phonon modes are strongly anisotropic compared with the optical ones in these materials. The variations of the acoustic phonon energies upon intercalation of 3d metals are strongly correlated with those of the interlayer spacingc, for which qualitative discussions are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00683573
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  • 5
    Electronic Resource
    Electronic Resource
    Point-contact spectroscopy for itinerant-magnetic material of Fe x TiS2 (1988)
    Springer
    Journal of low temperature physics 73 (1988), S. 469-481 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The nonlinear current-voltage characteristics of a homojunction point contact of 1T-CdI2-type layered crystal TiS2 and its intercalation compound of itinerantmagnetic Fe x TiS2 have been measured at 1.4 K. For the magnetic samples, both a maximum and a minimum in thedI/dV-V curves are observed within a restricted range of the initial differential resistancesR d(0). Electron-magnon scatterings are responsible for the appearance of the minimum at a bias voltageV B(min), which depends onR d(0). These results are discussed using the conventional “spherical spreading out” model, together with a heating model. The agreement between experiment and theory is apparently good if a large background is taken into account, but with unusually large andR d(0)-dependent Lorenz number.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00683574
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    Paper (German National Licenses)
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