Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Plakhty, V."'
Autor:
Chernenkov, Yu. P., Plakhty, V. P., Gukasov, A. G., Barilo, S. N., Shiryaev, S. V., Bychkov, G. L., Hinkov, V., Fedorov, V. I., Chekanov, V. A.
A structural transition at $T\approx 322$ K from the $Pmmm$ to $Pmma$ phase is found to coincide with an anomaly of resistivity. Another structural phase transition doubling the lattice parameter $c$, which has been postulated earlier to accompany a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0612139
Publikováno v:
J. Phys.: Condens. Matter 19 (2007) 145208
Magnon Bose condensation (BC)in the symmetry breaking magnetic field is a result of unusual form of the Zeeman energy, which has terms linear in the spin-wave operators and terms mixing excitations differ in the Wave-vector of the magnetic structure.
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607711
Autor:
Plakhty, V. P., Brown, P. J., Grenier, B., Shiryaev, S. V., Barilo, S. N., Gavrilov, S. V., Ressouche, E.
The magnetic moment induced by an external magnetic field of 5.8 T on the Co3+ ions in LaCoO3 has been measured by polarized neutron diffraction. Measurements were made at 100 K, near to the spin-state transition, at 1.5 K and at 285 K. The data give
Externí odkaz:
http://arxiv.org/abs/cond-mat/0509593
Autor:
Plakhty, V. P., Regnault, L. P., Goltsev, A. V., Gavrilov, S. V., Yakhou, F., Flouquet, J., Vettier, C., Kunii, S.
A magnetic Bragg reflection corresponding to the wave vector k13 = (2pi/a)[1/2,1/2,1/2] of the antiferro-quadrupolar ordering is found in CeB6 in zero magnetic field below the Neel temperature TN. Its intensity is two orders of magnitude weaker than
Externí odkaz:
http://arxiv.org/abs/cond-mat/0410698
Autor:
Plakhty, V. P., Chernenkov, Yu. P., Barilo, S. N., Podlesnyak, A., Pomjakushina, E., Khalyavin, D. D., Moskvin, E. V., Gavrilov, S. V.
Spin ordering in TbBaCo2O5.5 and its temperature transformation is studied. Polymorphism due to the oxygen ordering with the average content close to 5.5 is investigated. One of ceramic samples (I), in addition to the main phase ap x 2ap x 2ap, Pmmm,
Externí odkaz:
http://arxiv.org/abs/cond-mat/0407010
Autor:
Chernenkov, Yu. P., Plakhty, V. P., Fedorov, V. I., Barilo, S. N., Shiryaev, S. V., Bychkov, G. L.
A single crystal of GdBaCo2O5.47(2) has been studied by means of X-ray diffraction. Appearance of superstructure reflections at T = 341.5(7) K gives an evidence of continuous transition to the phase with unit cell doubled along the shortest edge a1.
Externí odkaz:
http://arxiv.org/abs/cond-mat/0405695
In the external field slightly inclined to the $x$- or y-axis of the frustrated tetragonal atiferromagnet Pr2CuO4, a transition is discovered from the phase with orthogonal antiferromagnetic spin subsystems along [1,0,0] and [0,1,0] to the phase with
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207197
Autor:
Polyakov, V. *, Plakhty, V., Bonnet, M., Burlet, P., Regnault, L.-P., Gavrilov, S., Zobkalo, I., Smirnov, O.
Publikováno v:
In Physica B: Physics of Condensed Matter 2001 297(1):208-212
Publikováno v:
In Physica B: Physics of Condensed Matter 2001 297(1):75-77
Autor:
Kulda, J *, Heil, W, Humblot, H, Tasset, F, Wildes, A, Plakhty, V, Moskvin, E, Burlet, P, Dreyer, J, Fåk, B
Publikováno v:
In Physica B: Physics of Condensed Matter 1999 267:252-254