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  1. No Access

    Article

    Low-field magnetoresistance in La0.7Ca0.3MnO3 manganite compounds prepared by the spray drying technique

    Calcium-substituted lanthanum manganite compounds were synthesized by the spray drying technique. This method—whose main advantages are versatility, high reproducibility and scalability—yields small grain mate...

    B. Vertruyen, A. Rulmont, R. Cloots, J.-F. Fagnard… in Journal of Materials Science (2005)

  2. No Access

    Article

    Synthesis and characterization of new inorganic polymeric composites based on kaolin or white clay and on ground-granulated blast furnace slag

    Alkali activation of dehydroxylated kaolin or clay yielded high-strength polymeric materials, so-called geopolymers. They were synthesized by mixing the aluminosilicate with solutions of sodium metasilicate an...

    I. Lecomte, M. Liégeois, A. Rulmont, R. Cloots, F. Maseri in Journal of Materials Research (2003)

  3. No Access

    Article

    Preparation of BaZrO3 powders by a spray-drying process

    The potential use of barium zirconate for the manufacture of corrosion-resistant substrates emphasizes the need for a simple, inexpensive, and easily scalable process to produce high-quality powders with well-...

    B Robertz, F Boschini, A. Rulmont, R. Cloots… in Journal of Materials Research (2003)

  4. No Access

    Chapter

    Dysprosium Substitution in Bi-Based 2223 Materials: The Role of the Superconducting Layer Charge Distribution for Inducing a Structural Phase Transition

    The chemical synthesis of dysprosium doped Bi-based 2223 high-Tc superconducting materials prepared by either a “two-powder process” or a “crystalline-glassy matrix precursor” method has been examined. In both ca...

    R. Cloots, J. Feldmann, A. Rulmont, M. Ausloos in Supermaterials (2000)

  5. No Access

    Article

    Two Peak Effect in GMR: A Chemical Effect?

    We show that the synthesis conditions have a dramatic influence on the resistivity behavior of calcium and sodium doped LaMnO3. Several samples prepared by lowtemperature techniques exhibit a double-peaked curve ...

    B. Vertruyen, A. Rulmont, S. Dorbolo, H. Bougrine… in MRS Online Proceedings Library (1999)

  6. No Access

    Article

    Anomalous temperature behavior of the resistivity in lightly doped manganites around a metal-insulator phase transition

    An unusual temperature and concentration behavior of the resistivity ρ(T, x) in La0.7Ca0.3Mn1−2x CuxO3 is observed at slight Cu do** (0≤x≤0.05). Namely, the introduction of copper results in a splitting of the ...

    S. Sergeenkov, M. Ausloos, H. Bougrine… in Journal of Experimental and Theoretical Ph… (1999)

  7. No Access

    Article

    Directional solidification by appropriate chemically active single crystal seed: An alternative way of generating large superconducting 123 single domain

    A Dy2O3 single crystal has been used as a seed for the growth of isothermally melt-textured Dy-123 material. The nucleation-controlled step has been observed to be related to the heterogeneous nucleation of 211 p...

    R. Cloots, Fr. Auguste, A. Rulmont, N. Vandewalle… in Journal of Materials Research (1997)

  8. No Access

    Article

    Microstructure development in isothermally melt-textured 123–211 composite materials

    Microstructures of isothermally melt-textured 123–211 composite materials have been examined during the solidification process from quenched specimens. The distribution of 211 particles, the superconducting 12...

    F. Auguste, A. Rulmont, N. Vandewalle, H. Bougrine… in Journal of Low Temperature Physics (1996)

  9. No Access

    Article

    Field percolation and high current density in 80/20 DyBa2Cu3O7 − x/Dy2BaCuO5 bulk magnetically textured composite ceramics

    We measured the AC susceptibility of magnetically textured (123) 80%/211(20%) DyBaCuO composite in a special set-up in order to enhance the intergrain contribution. The synthesis process led to very clean “wea...

    R. Cloots, A. Dang, Ph. Vanderbemden… in Zeitschrift für Physik B Condensed Matter (1996)

  10. No Access

    Article

    Non-isovalent metal substitution for bismuth, strontium, calcium, and copper in bi-based 2212 superconducting ceramics

    The aim of this paper is to investigate the influence of non-isovalent alkali (Li, Na, K, and Cs) substitution in Bi2Sr2CaCu2O8, in particular on its synthesis conditions and on their resistive and thermopower el...

    S. Stassen, A. Rulmont, M. Ausloos, R. Cloots in Journal of Low Temperature Physics (1996)

  11. No Access

    Article

    Magnetic alignment in 2212 Bi-based superconducting system: Part I. Magnetic orientation of Bi2Sr2Ca1−x(RE)xCu2O8−y [(RE) = Gd, Dy, Ho, Er] powder dispersed in epoxy resin at room temperature

    The magnetic anisotropy of rare-earth substituted 2212 materials (Bi2Sr2Ca0.8RE0.2Cu2Ox with RE = Gd, Dy, Ho, Er) is put into evidence. Superconducting powder dispersed in epoxy resin is oriented under an externa...

    S. Stassen, R. Cloots, Ph. Vanderbemden, P. A. Godelaine… in Journal of Materials Research (1996)

  12. No Access

    Article

    Non-isovalent alkali metal “substitution” in YBa2Cu3O7−y granular ceramics

    The aim of this paper is to study the influence of non-isovalent “do**” in YBa2Cu3O7−y in particular on its synthesis conditions and on the resistive properties both with and without a magnetic field. We conce...

    R. Cloots, A. Rulmont, M. Pekala, J. Y. Laval… in Zeitschrift für Physik B Condensed Matter (1995)

  13. No Access

    Article

    Magnetic alignment in 2212 Bi-based superconducting system: II. Bi2Sr2Ca1−xDyxCu2O8−yx = 0.2 glass recrystallized in 0.6 T magnetic field

    Starting from a glassy precursor, Bi2Sr2Ca1−xDyxCu2O8−y (for x = 0.2) was recrystallized under a 0.6 T magnetic field. After splat quenching, the samples were heated and sintered at different temperatures T1, the...

    S. Stassen, R. Cloots, A. Rulmont, M. Ausloos in Journal of Materials Research (1995)

  14. No Access

    Article

    About the occurrence of tetrahedrally co-ordinated Sn4+ and Ti4+ in the new synthetic garnet-type solid solution Ca3Sn3−x Ti x Fe2O12 (0.25⩽x⩽1.50)

    B. Cartie, F. Archaimbault, J. Choisnet, A. Rulmont… in Journal of Materials Science Letters (1992)

  15. No Access

    Article

    Ionic conductivity of the Na1+xM x III Zr2−x(PO4)3 systems (M = Al, Ga, Cr, Fe, Sc, In, Y, Yb)

    The existence and ionic conductivity of solid solutions Na1+xM x III Zr2−x(PO4)3 with Nasicon-like structure have been investigated and the results compared wit...

    J. M. Winand, A. Rulmont, P. Tarte in Journal of Materials Science (1990)

  16. No Access

    Article

    Dimensionality crossover regimes due to microcrystalline anisotropy in the resistivity of granular Y1Ba2Cu3O7−y in weak magnetic fields at low temperature

    Precise measurements of the electrical resitivity of Y1Ba2Cu3O7−y have been taken in the temperature range between the “percolation transition” temperatureT R and the “superco...

    Ch. Laurent, M. Laguesse, S. K. Patapis… in Zeitschrift für Physik B Condensed Matter (1988)

  17. No Access

    Article

    Factors determining the cation distribution in spinels: The case of spinels containing several high-valency cations

    P. Tarte, A. Rulmont in Journal of Materials Science Letters (1988)

  18. No Access

    Article

    Vibrational spectrum of crystalline and glassy LiBGeO4: Structural analogies with BAsO4

    A. Rulmont, P. Tarte, J. M. Winand in Journal of Materials Science Letters (1987)

  19. No Access

    Article

    Infrared spectrum of crystalline and glassy borosilicates M1BSi2O6

    A. Rulmont, P. Tarte in Journal of Materials Science Letters (1987)