Burnus, T., Hu, Z., Haverkort, M. W., Cezar, J. C., Flahaut, D., Hardy, V., ...
We have investigated the valence, spin, and orbital state of the Co ions in the one-dimensional cobaltate Ca3Co2O6 using x-ray absorption and x-ray magnetic circular dichroism at the Co-L2,3 edges....
Scaling behavior in thermoelectric misfit cobalt oxides (2006)
Limelette, P., Hebert, S., Hardy, V., Fresard, R., Simon, Ch., Maignan, A.
We investigate both thermoelectric and thermodynamic properties of the misfit cobalt oxide [Bi$_{1.7}$Co$_{0.3}$Ca$_{2}$O$_{4}$]$^{RS}_{0.6}$CoO$_{2}$. A large negative magnetothermopower is found to...
Gich, M., Frontera, C., Roig, A., Taboada, E., Molins, E., Rechenberg, H. R., ...
The crystal and magnetic structures of the orthorhombic e-Fe2O3 have been studied by simultaneous Rietveld refinement of X-ray and neutron powder diffraction data in combination with Mossbauer...
Yaicle, C., Martin, C., Jirak, Z., Fauth, F., Andre, G., Suard, E., ...
Substitutions at the Mn-site of the charge-ordered Pr0.5Ca0.5MnO3 manganite is an effective way to induce abrupt jumps on the magnetic field driven magnetization curve. In order to get new insights...
Wahl, A., Hardy, V., Martin, C., Simon, Ch.
The Pr(1-x}CaxMnO3 system exhibits a ferromagnetic insulating state for the composition range x
Voltage noise and surface current fluctuations in the superconducting surface sheath (2005)
Scola, J., Pautrat, A., Goupil, C., Mechin, L., Hardy, V., Simon, Ch.
We report the first measurements of the voltage noise in the surface superconductivity state of a type-II superconductor. We present strong evidences that surface vortices generates surface current...
Strongly correlated properties of the thermoelectric cobalt oxide Ca3Co4O9 (2005)
Limelette, P., Hardy, V., Auban-Senzier, P., Jerome, D., Flahaut, D., Hebert, S., ...
We have performed both in-plane resistivity, Hall effect and specific heat measurements on the thermoelectric cobalt oxide Ca$_{3}$Co$_{4}$O$_{9}$. Four distinct transport regimes are found as a...
Single crystal neutron diffraction study of the magnetisation process in Ca3Co2O6 (2005)
Petrenko, OA, Wooldridge, J, Lees, MR, Manuel, P, Hardy, V
We have performed neutron diffraction measurements on a single crystal sample of Ca3Co2O6 both in a zero field and in an applied magnetic field. The measurements have revealed details of the zero...
Dynamic effects in one dimensional A'3ABO6 (2005)
Costes, M., Broto, J.M., Raquet, B., Rakoto, H., Novak, M.A., Sinnecker, J.P., ...
Investigation of the field-treated magnetic state in Gd5Ge4 (2004)
Majumdar, S., Crowe, S. J., Paul, D. McK., Lees, M. R., Hardy, V.
At low temperatures, the intermetallic compound Gd$_5$Ge$_4$ shows a sharp field-induced transition into a ferromagnetic state around 25 kOe of applied field. The material remains in the field...
Quantum Tunneling of the Magnetization in the Ising Chain Compound Ca3Co2O6 (2004)
Maignan, A., Hardy, V., Hebert, S., Drillon, M., Lees, M. R., Petrenko, O., ...
The magnetic behavior of the Ca3Co2O6 spin chain compound is characterized by a large Ising-like character of its ferromagnetic chains, set on triangular lattice, that are antiferromagnetically...
A magnetic study of the one dimensional Sr3NilrO6 compound (2004)
Flahaut, D., Hbert, S., Maignan, A., Hardy, V., Martin, C., Hervieu, M., ...
Dynamic effects in one dimensional A'3ABO6 (2004)
Costes, M., Broto, J.M., Raquet, B., Rakoto, H., Novak, M.A., Sinnecker, J.P., ...
Yaicle, C., Martin, C., Jirak, Z., Fauth, F., Andre, G., Suard, E., ...
Substitutions at the Mn-site of the charge-ordered Pr0.5Ca0.5MnO3 manganite is an effective way to induce abrupt jumps on the magnetic field driven magnetization curve. In order to get new insights...
Majumdar, S., Hardy, V., Lees, M. R., Paul, D. McK., Rousseliere, H., Grebille, D.
The Heisenberg spin chain compound Sr3CuPtO6 is investigated by magnetic susceptibility and heat capacity measurements. Sr3CuPtO6 has an unconventional chain structure in the sense that i) the spin...
Hardy, V., Majumdar, S., Crowe, S., Lees, M. R., Paul, D. McK., Herve, L., ...
Field-induced magnetization jumps with similar characteristics are observed at low temperature for the intermetallic germanide Gd5Ge4and the mixed-valent manganite Pr0.6Ca0.4Mn0.96Ga0.04O3. We report...
Hardy, V., Yaicle, C., Hebert, S., Maignan, A., Martin, C., Hervieu, M., ...
Substitutions in the Mn-sublattice of antiferromagnetic, charge and orbitally ordered manganites was recently found to produce intriguing metamagnetic transitions, consisting of a succession of sharp...
Hardy, V., Lambert, S., Lees, M. R., Paul, D. McK.
Specific heat and magnetization measurements have been carried out under a range of magnetic fields on single crystals of Ca3Co2O6. This compound is composed of Ising magnetic chains that are...
Hardy, V., Lees, M. R., Maignan, A., Hebert, S., Flahaut, D., Martin, C., ...
Specific heat measurements were carried out on the closely related spin-chain oxides Ca3Co2O6 and Ca3CoRhO6. Both compounds consist of Ising magnetic chains that are arranged on a triangular lattice....
Staircase effect in metamagnetic transitions of charge and orbitally ordered manganites (2003)
Hardy, V., Hebert, S., Maignan, A., Martin, C., Hervieu, M., Raveau, B.
This paper reports on peculiar metamagnetic transitions which take place in antiferromagnetic, charge and orbitally ordered (AFCOO) manganites. At very low temperatures, the virgin magnetization...
A magnetic study of the 1-D Sr3NiIrO6 compound (2003)
Flahaut, D., Hébert, S., Maignan, A., Hardy, V., Martin, C., Hervieu, M., ...
Yaicle, C., Martin, C., Jirak, Z., Fauth, F., Andre, G., Suard, E., ...
Substitutions at the Mn-site of the charge-ordered Pr0.5Ca0.5MnO3 manganite is an effective way to induce abrupt jumps on the magnetic field driven magnetization curve. In order to get new insights...
Yaicle, C., Martin, C., Jirak, Z., Fauth, F., Andre, G., Suard, E., ...
Substitutions at the Mn-site of the charge-ordered Pr0.5Ca0.5MnO3 manganite is an effective way to induce abrupt jumps on the magnetic field driven magnetization curve. In order to get new insights...
Wahl, A., Hardy, V., Martin, C., Simon, Ch.
The Pr(1-x}CaxMnO3 system exhibits a ferromagnetic insulating state for the composition range x
Wahl, A., Hardy, V., Martin, C., Simon, Ch.
The Pr(1-x}CaxMnO3 system exhibits a ferromagnetic insulating state for the composition range x
Wahl, A., Hardy, V., Martin, C., Simon, Ch.
The Pr(1-x}CaxMnO3 system exhibits a ferromagnetic insulating state for the composition range x
Réseaux de vortex dans Bi2Sr2Ca1Cu2Ox (1994)
Weiss, F., Miramond, C., Thomas, O., Rouault, A., Sénateur, J., Audier, M., ...
Nous présentons une étude sur l'influence des défauts vis-à-vis du piégeage des lignes de flux magnétique dans des monocristaux de Bi2Sr2Ca1Cu2Ox. Ces monocristaux, non irradiés ou irradiés...
Réseaux de vortex dans Bi2Sr2Ca1Cu2Ox (1994)
Weiss, F., Miramond, C., Thomas, O., Rouault, A., Sénateur, J., Audier, M., ...
Nous présentons une étude sur l'influence des défauts vis-à-vis du piégeage des lignes de flux magnétique dans des monocristaux de Bi2Sr2Ca1Cu2Ox. Ces monocristaux, non irradiés ou irradiés...
Réseaux de vortex dans Bi2Sr2Ca1Cu2Ox (1994)
Weiss, F., Miramond, C., Thomas, O., Rouault, A., Sénateur, J., Audier, M., ...
Nous présentons une étude sur l'influence des défauts vis-à-vis du piégeage des lignes de flux magnétique dans des monocristaux de Bi2Sr2Ca1Cu2Ox. Ces monocristaux, non irradiés ou irradiés...
TUNABLE DIODE-PUMPED-LNA LASER (1987)
Cassimi, A., Hardy, V., Hamel, J., Leduc, M.
Diode-pumped crystals provided recently new compact laser devices. We report the first end pumping of a Lax Nd1-xMgAl11O19(LNA) crystal using a 200mW diode array (Spectra Diode Lab). We also report...
TUNABLE DIODE-PUMPED-LNA LASER (1987)
Cassimi, A., Hardy, V., Hamel, J., Leduc, M.
Diode-pumped crystals provided recently new compact laser devices. We report the first end pumping of a Lax Nd1-xMgAl11O19(LNA) crystal using a 200mW diode array (Spectra Diode Lab). We also report...
TUNABLE DIODE-PUMPED-LNA LASER (1987)
Cassimi, A., Hardy, V., Hamel, J., Leduc, M.
Diode-pumped crystals provided recently new compact laser devices. We report the first end pumping of a Lax Nd1-xMgAl11O19(LNA) crystal using a 200mW diode array (Spectra Diode Lab). We also report...