Zobrazeno 1 - 10
of 348
pro vyhledávání: '"Kondakova, I."'
Akademický článek
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Publikováno v:
Phys. Rev. B 89, 024402 (2014) [9 pages]
We show that the magnetism of double perovskite AFe_{1/2}M_{1/2}O_3 systems may be described by the Heisenberg model on the simple cubic lattice, where only half of sites are occupied by localized magnetic moments. The nearest-neighbor interaction J_
Externí odkaz:
http://arxiv.org/abs/1309.1318
Autor:
Babin, V., Grigorjeva, L., Kondakova, I., Kärner, T., Laguta, V. V., Nikl, M., Smits, K., Zazubovich, S., Zorenko, Yu.
Publikováno v:
J. Phys. D: Appl. Phys. 44, 315402 (2011)
Luminescence characteristics of single crystals (SC), single crystalline films (SCF), powders and ceramics of YAlO_3 and YAlO_3:Ce have been studied at 4.2-300 K under photoexcitation in the 4-20 eV energy range and X-ray excitation. The origin and s
Externí odkaz:
http://arxiv.org/abs/1101.0524
Autor:
Kuzian, R. O., Laguta, V. V., Dare, A. -M., Kondakova, I. V., Marysko, M., Raymond, L., Garmash, E. P., Pavlikov, V. N., Tkach, A., Vilarinho, P. M., Hayn, R.
Publikováno v:
EPL,vol. 92, p. 17007 (2010)
We report magnetization measurements and magnetic resonance data for SrTiO3 doped by manganese. We show that the recently reported coexistent spin and dipole glass (multiglass) behaviours are strongly affected by the distribution of Mn ions between t
Externí odkaz:
http://arxiv.org/abs/1007.0488
Publikováno v:
Phys. Rev. B 80, 125113 (2009)
We analyze recent measurements [R. Blinc, V. V. Laguta, B. Zalar, M. Itoh and H. Krakauer, J. Phys. : Cond. Mat., v.20, 085204 (2008)] of the electric field gradient on the oxygen site in the perovskites SrTiO3 and BaTiO3, which revealed, in agreemen
Externí odkaz:
http://arxiv.org/abs/0903.4015
Autor:
Laguta, V. V., Kondakova, I. V., Bykov, I. P., Glinchuk, M. D., Vilarinho, P. M., Tkach, A., Jastrabik, L.
Using electron spin resonance, lattice position and dynamic properties of Mn2+ ions were studied in 0.5 and 2 % manganese doped SrTiO3 ceramics prepared by conventional mixed oxide method. The measurements showed that Mn2+ ions substitute preferably
Externí odkaz:
http://arxiv.org/abs/cond-mat/0702692
Autor:
Glinchuk, M. D., Kondakova, I. V., Slipenyuk, A. M., Bykov, I. P., Laguta, V. V., Ragulya, A. V., Klimenko, V. P.
The theoretical and experimental investigation of ferroelectric nanopowders is performed. The manifestation in radiospectroscopy spectra of size driven ferroelectric-paraelectric phase transition at some critical particle average size was the main go
Externí odkaz:
http://arxiv.org/abs/cond-mat/0505612
Autor:
Glinchuk, M. D., Kondakova, I. V.
Theory of the first order Raman scattering (FOR) line shape allowing for nonlinear and correlation effects contribution to inhomogeneous broadening as well as dynamic mechanisms of homogeneous broadening is developed. It is shown that in general case
Externí odkaz:
http://arxiv.org/abs/cond-mat/0003196
Autor:
Glinchuk, M. D., Kondakova, I. V.
We present the theory of dielectric spectra allowing for homogeneous and inhomogeneous broadening mechanisms contributions. The dielectric absorption line shape for oscillators with memory and Debye type relaxors with distribution of, respectively, r
Externí odkaz:
http://arxiv.org/abs/cond-mat/9908403
Akademický článek
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