Browsing Journal Articles by Author "wa Gachigi, K."

Now showing items 1-5 of 5

    • Electrostriction Measurements in Diffuse Phase Transition Materials and Perovskite Glass Ceramics 

      Sundar, V.; wa Gachigi, K.; McCauley, D.M.; Markowski, K.; Newnham, R.E. (1994)
      Materials with diffuse phase transitions are of much interest for applications in very smart systems. The main advantage they have over conventional materials is the tunable nature of their nonlinear properties such as ...

    • Grain Size Effects in Barium Titanate 

      wa Gachigi, K.; Kumar, U.; Dougherty, J.P. (1993)
      Due to its high crystallinity and purity, hydrothermal powder was used to study the effects of grain size and density on the dielectric properties of BaTiO3. Curie-Weiss analysis was used to analyze the results as porosity ...

    • Phase Transitions of Antiferroelectric Lead Zirconate Thin Films in High Electric Fields 

      Yamakawa, K.; wa Gachigi, K.; Troiler-McKinstry, S.; Dougherty, J.P. (1996)
      Phase transitions in antiferroelectric lead zirconate thin films were studied at room temperature and at 77 K. The lead zirconate films were prepared on Pt coated Si substrates by a reactive magnetron co-sputtering mthod ...

    • PLZT Phases near Lead Titanate. I. Determination by X-ray Diffraction 

      Breval, E.; wa Gachigi, K.; Wang, C.; Douhgherty, J. (2005)
      The room temperature phase diagram of PLZT, (Pb,La)(Zr,Ti)O3, or L/Z/T for L<12 and T<10 was constructed using X-ray diffraction patterns of sintered and crushed PLZT material. The orthorhombic antiferroelectric phase, a ...

    • Ultra-High Strain Ceramics with Multiple Field-Induced Phase Transitions 

      Brodeur, R.P.; wa Gachigi, K.; Pruna, P.M.; Shrout, T.R. (1994)
      The induced polarization and longitudinal strain behavior of lanthanum- and titanium-modified antiferroelectric lead zirconate ceramics were measured as functions of electric field as high as 30 kV/mrn (300 kV/cm). Two ...