Zobrazeno 1 - 10
of 714
pro vyhledávání: '"Chouteau, G"'
Autor:
De Brion, Sophie, Darie, C., Hopzapfel, M., Talbayev, D., Mihaly, L., Simon, F., Janossy, A., Chouteau, G.
Publikováno v:
Physical Review B 75 (02/03/2007) 094402
In NaNiO2, Ni3+ ions form a quasi two dimensional triangular lattice of S = 1=2 spins. The magnetic order observed below 20K has been described as an A type antiferromagnet with ferro- magnetic layers weakly coupled antiferromagnetically. We studied
Externí odkaz:
http://arxiv.org/abs/cond-mat/0608238
Autor:
Diaz, Sébastien, De Brion, Sophie, Chouteau, G., Canals, Benjamin, Simonet, Virginie, Strobel, P.
Publikováno v:
physical Review B 74 (2006) 092404
In both spinel compounds GeCo$_2$O$_4$ and GeNi$_2$O$_4$ which order antiferromagnetically (at $T_N = 23.5 K$ and $T_{N_1} = 12.13 K$, $T_{N_2} = 11.46 K$) with different Curie Weiss temperatures ($T_{CW}$=80.5 K and -15 K), the usual magnetic frustr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0608061
Publikováno v:
J. Appl. Phys. 98 (2005) 093903
Thin films of Sm0.5Ca0.5MnO3 manganites with charge ordering (CO) properties and colossal magnetoresistance were synthesized by pulsed laser deposition technique on (100)-SrTiO3 and (100)-LaAlO3 substrates. We first compare the structural modificatio
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509734
Autor:
Hopzapfel, M., Debrion, S., Darie, C., Bordet, P., Chouteau, G., Strobel, P., Sulpice, A., Nunez-Regueiro, M. D., Chappel, Eric
In the Li1-xNaxNiO2 solid solutions three different single phase regions exist: for x > 0.9, forx = 0.7 and for x < 0.3. Although the intermediate compound does not show the cooperative Jahn-Teller transition of NaNiO2, its magnetic properties remain
Externí odkaz:
http://arxiv.org/abs/cond-mat/0403329
Compressed Pr0.5Ca0.5MnO3 films (250nm) deposited on LaAlO3 have been studied by Electron Spin Resonance technique under high frequency and high magnetic field. We show evidences for the presence of a ferromagnetic phase (FM) embedded in the charge-o
Externí odkaz:
http://arxiv.org/abs/cond-mat/0306075
Autor:
Prellier, W., Buzin, E. Rauwel, de Brion, S., Chouteau, G., Simon, Ch., Hervieu, B. Mercey nd M.
Publikováno v:
published in Phys. Rev. B 66, 024432 (2002)
We have investigated the magnetic-field-induced phase transition of charge-ordered (CO) Pr$_{0.5}$Ca$_{0.5}$MnO$_3$ thin films, deposited onto (100)-oriented LaAlO$_3$ and (100)-oriented SrTiO$_3$ substrates using the pulsed laser deposition techniqu
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206072
Autor:
Chappel, E., Nunez-Regueiro, M. D., de Brion, S., Chouteau, G., Bianchi, V., Caurant, D., Baffier, N.
Susceptibility, high-field magnetization and submillimeter wave electron spin resonance measurements of layered quasi-stoichiometric Li1-xNi1+xO2 are reported and compared to isomorphic NaNiO2. A new mechanism of magnetic frustration induced by the e
Externí odkaz:
http://arxiv.org/abs/cond-mat/0205059
The role played by the Nd ions in the magnetic properties of Nd0.5Ca0.5MnO3 and Nd0.7Ca0.3MnO3 is studied using static magnetization, neutron diffraction and high frequency (9.4-475GHz) Electron Spin Resonance. We show that the Nd ions are weakly cou
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110139
In the manganite Nd0.5Ca0.5MnO3, charge ordering occurs at much higher temperature than the antiferromagnetic order (TCO=250K,TN=160K). The magnetic behavior of the phase TN
Externí odkaz:
http://arxiv.org/abs/cond-mat/0005206
The magnetic phase diagram of $La_{1-\delta}MnO_{3}$ powdered samples have been studied as a function of $\delta $ in the low doping range. $La_{0.97}MnO_{3}$ has a canted magnetic structure at low temperature $(\theta \simeq 130\QTR{group}{{}^{\circ
Externí odkaz:
http://arxiv.org/abs/cond-mat/9803024