Zobrazeno 1 - 10
of 123
pro vyhledávání: '"Bonville Pierre"'
Autor:
Duttine, Mathieu, Wattiaux, Alain, Balima, Felix, Decorse, Claudia, Moutaabbid, Hicham, Bonville, Pierre
In the orthorhombic manganites o-RMnO3, where R is a heavy rare earth (R = Gd-Yb), the Mn3+ sublattice is known to undergo two magnetic transitions. The low temperature phase has an antiferromagnetic structure (collinear or elliptical), which has bee
Externí odkaz:
http://arxiv.org/abs/1801.05276
Autor:
Horner, Olivier, Mouesca, Jean-Marie, Oddou, Jean-Louis, Jeandey, Claudine, Nivière, Vincent, Mattioli, Tony A, Mathé, Christelle, Fontecave, Marc, Maldivi, Pascale, Bonville, Pierre, Halfen, Jason A, Latour, Jean-Marc
Superoxide reductase (SOR) is an Fe protein that catalyzes the reduction of superoxide to give H(2)O(2). Recently, the mutation of the Glu47 residue into alanine (E47A) in the active site of SOR from Desulfoarculus baarsii has allowed the stabilizati
Externí odkaz:
http://arxiv.org/abs/1412.3293
Autor:
Guitteny, Solene, Petit, Sylvain, Lhotel, Elsa, Robert, Julien, Bonville, Pierre, Forget, Anne, Mirebeau, Isabelle
Publikováno v:
Phys. Rev. B 88, 134408 (2013)
\ersn\, is considered, together with \erti, as a realization of the XY antiferromagnet on the pyrochlore lattice. We present magnetization measurements confirming that \ersn\, does not order down to 100 mK but exhibits a freezing below 200 mK. Our ne
Externí odkaz:
http://arxiv.org/abs/1307.1636
Autor:
Guitteny, Solène, Robert, Julien, Bonville, Pierre, Ollivier, Jacques, Decorse, Claudia, Steffens, Paul, Boehm, Martin, Mutka, Hannu, Mirebeau, Isabelle, Petit, Sylvain
The dynamical magnetic correlations in \tbti\, have been investigated using polarized inelastic neutron scattering. Dispersive excitations are observed, emerging from pinch points in reciprocal space and characterized by an anisotropic spectral weigh
Externí odkaz:
http://arxiv.org/abs/1305.6363
Autor:
Bonville, Pierre, Petit, Sylvain, Mirebeau, Isabelle, Robert, Julien, Lhotel, Elsa, Paulsen, Carley
We present a model which accounts for the high field magnetisation at very low temperature in two pyrochlore frustrated systems, Er2Ti2O7 and Tb2Ti2O7. The two compounds present very different ground states: Er2Ti2O7, which has a planar crystal field
Externí odkaz:
http://arxiv.org/abs/1302.6418
We have studied the low energy spin dynamics between 4.6K and 0.07K in a Tb2Ti2O7 single crystal sample, by means of inelastic neutron scattering experiments. The spectra consist in a dual response, with a static and an inelastic contribution, showin
Externí odkaz:
http://arxiv.org/abs/1210.1428
Geometrical frustration is a central challenge in contemporary condensed matter physics, a crucible favourable to the emergence of novel physics. The pyrochlore magnets, with rare earth magnetic moments localized at the vertices of corner-sharing tet
Externí odkaz:
http://arxiv.org/abs/1109.1960
We used a local susceptibility approach in extensive polarized neutron diffraction studies of the spin liquid \tbti. For a magnetic field applied along the [110] and [111] directions, we found that, at high temperature, all Tb moments are collinear a
Externí odkaz:
http://arxiv.org/abs/0904.4553
Autor:
Marty, Karol, Bordet, Pierre, Simonet, Virginie, Loire, Mickael, Ballou, Rafik, Darie, Céline, Kljun, Jakob, Bonville, Pierre, Isnard, Olivier, Lejay, Pascal, Zawilski, Bartosz, Simon, Charles
Publikováno v:
Physical Review B 81, 5 (2010) 054416
The Fe-based langasites are the first reported compounds presenting a magnetic ordering in this rich family, besides being well known for piezo-electric properties and optical activity. The structural, magnetic and dielectric properties of the Fe lan
Externí odkaz:
http://arxiv.org/abs/0903.4950
Autor:
Lebeugle, Delphine, Colson, Dorothee, Forget, Anne, Viret, Michel, Bonville, Pierre, Marucco, Jean-Francis, Fusil, Stephane
From an experimental point of view, room temperature ferroelectricity in BiFeO3 is raising many questions. Electric measurements made a long time ago on solid-solutions of BiFeO3 with Pb(Ti,Zr)O3 indicate that a spontaneous electric polarization exis
Externí odkaz:
http://arxiv.org/abs/0706.0404