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по журналам "Ferroelectrics"

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  • Chilton J.A.; Garner G.M.; Whatmore R.W.; Ainger F.W. (Taylor & Francis Group, 1990-09-01)
    The sensitivity of 0-3 composites based on a modified lead titanate has been investigated. The effects of poling field, poling time and poling temperature will be shown. Based on these variations, optimum poling conditions ...
  • Stotlar S.C.; Mclellan E.J.; Gibbs A.J.; Webb J. (Taylor & Francis Group, 1980-01-01)
    Sub-one-hundred-ps response time pyroelectric detectors are being developed at Los Alamos Scientific Laboratory (LASL) to be compatible with the 5-GHz oscilloscope direct-access mode of operation without damage. Strontium ...
  • Kim Chulho; Rittenmyer KurtM.; Kahn Manfred (Taylor & Francis Group, 1994-06-01)
    A piezocomposite structure was prepared in a 1-1-3 configuration by casting a soft epoxy interlayer between PZT rods and a stiff polymer preform matrix to maximize the hydrostatic sensitivity of 1–3 type PZT polymer ...
  • Schuele PaulJ.; Schmidt V.Hugo (Taylor & Francis Group, 1991-05-01)
    Pressure and temperature effects on the one dimensional (1D) and higher-dimensionality correlations associated with the ferroelectric (FE) and antiferroelectric (AFE) phase transitions in cesium dihydrogen phosphate were ...
  • Derzhko Oleg; Moina Alla (Taylor & Francis Group, 1994-03-01)
    Using Jordan-Wigner fermionization we examined the statistical mechanics of 1D s=1/2 XY model in transverse field with Dzyaloshinskii-Moriya interaction. In particular we calculated exactly the transverse dynamical ...
  • Buchhett W.; Grossmann J.; Petersson J. (Taylor & Francis Group, 1980-01-01)
    Abstract The temperature dependences of both the 23Na electric field gradient tensor (EFG) in NaNO2 and AgNa(NO2)2 and the spontaneous polarization Ps in NaNO2 were determined. Contrary to AgNa(NO2)2 for which a quadratic ...
  • Albers J.; Elschner S.; Klöpperpieper A.; Petersson J. (Taylor & Francis Group, 1984-04-01)
    Both the NMR line width of the central line and T1 of the 23Na nucleus are measured as a function of temperature in Na(CN)xCl-1-x crystals at various concentrations x. The behaviour of both quantities shows that for ...
  • Milia F. (Taylor & Francis Group, 1980-01-01)
    In the present review the fundamental features of the successive phase transitions in ferroelectric materials from the high temperature normal phase to the incommensurate and then to the commensurate phase are described ...
  • Kind R.; Roos J. (Taylor & Francis Group, 1976-01-01)
    The temperature dependence of the 35Cl nuclear quadrupole resonance for the two chemically inequivalent chlorine sites in the perovskitic layer structure compound (CH3NH3)2 MnCl4 has been measured around the second order ...
  • Yokoyama Akihisa; Nishiyama Isa; Yoshizawa Atsushi (Taylor & Francis Group, 1993-11-01)
    New smectic C base materials, 6-alkyl-2-(4-alkyloxyphenyl)quinolines, were prepared and their physical properties investigated. Each compound showed a wide SmC temperature range. The rotational viscosities for the ...
  • Bjorkstam JohnL. (Taylor & Francis Group, 1991-05-01)
    Effects of a small admixture of the ferroelectric phase symmetry are evident in the 75As NMR lineshape up to at least room temperature; i.e., more than three times the transition temperature of Tc = 97 K. Analysis of the ...
  • Bjorkstam JohnL. (Taylor & Francis Group, 1988-02-01)
    All essential features of the anomalous 75As NMR spectrum in the non-polar phase of potassium dihydrogen phosphate (KDA) may be explained in terms of spectral density peaks which result from the formation of polar clusters. ...
  • Milia F. (Taylor & Francis Group, 1978-01-01)
    The 75As Zeeman perturbed NQR spectra of (NH4)2HAsO4 as well as the 75As NQR spectra of Na2HAsO4, Na2HAsO4. 5H2O and Na2HAsO4. 7H2O were investigated. For comparison, the As NQR spectra of monoclinic TIH2AsO4 were as well ...
  • Choh S.H.; Park IW.; Ahn J.M.; Kim I.G.; Choi Y.N.; Song K.J.; Kim J.N. (Taylor & Francis Group, 1994-06-01)
    We measured 7Li NMR and Fe3+ EPR for Li1–xKxNbO3 mixed crystals, in which x = 0.0, 0.1, 0.2, 0.3 and 0.7, grown by the Czochralski method. From experimental results it is concluded that no noticeable structural deviation ...
  • Ran Lim Ae; Jong Han Tae; Jeong Se-Young (Taylor & Francis Group, 1994-06-01)
    Nuclear magnetic resonance of 87Rb in the paramagnetic RbMnCl3 single crystals grown by the Czochralski method has been investigated using a Bruker FT NMR spectrometer. The spectra of two lines with an intensity ratio of ...
  • Tellgren Roland; Liminga Rune (Taylor & Francis Group, 1974-01-01)
    The crystal structure of CsH3(SeO3)2 has been determined from three-dimensional single crystal x-ray diffractometer data obtained at room temperature. Two formula units crystallize in a triclinic unit cell of dimensions a ...
  • Jimenez B.; Frutos J.de (Taylor & Francis Group, 1988-05-01)
    The 90° domains reorientation is studied by thermal expansion on Lead-Calcium Titanate ceramics that were poled by the usual procedure at different values of the poling electric field. The reorientation of 90° domains under ...
  • Arlt G.; Dederichs H.; Herbiet R. (Taylor & Francis Group, 1987-08-01)
    A phenomenological model of a vibrating 90°-domain wall in an electric and mechanic stress field is presented. The model allows to separate the domain wall and the volume contribution to the complex dielectric, piezoelectric ...
  • Dijon J. (Taylor & Francis Group, 1988-09-01)
    A 6″ diagonal black and white SmC panel was demonstrated during the first international symposium on ferreoelectric liquid crystal. This panel already presented at Eurodisplay (1) have the following characteristics:
  • Lu H.M.; Hardy J.R. (Taylor & Francis Group, 1990-11-01)
    We report a first-principles simulational study of phase transitions in KNO3 using our recently developed method to treat ionic molecular solids. With the inter- and intra-molecular potentials calculated from ab initio ...