Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Abrashev, M. V."'
Raman spectroscopy of alpha-FeOOH (goethite) near antiferromagnetic to paramagnetic phase transition
Synthetic powder, ore samples and mineral single crystals of goethite ($\alpha-$FeOOH) were investigated with polarized Raman spectroscopy at temperatures from 300 K to 473 K. The symmetry of the vibrational modes, observed in different scattering co
Externí odkaz:
http://arxiv.org/abs/2002.12325
Publikováno v:
Phys. Rev. B 82, 024104 (2010)
The Raman spectra of single crystals of NiFe2O4 were studied in various scattering configurations in close comparison with the corresponding spectra of Ni0.7Zn0.3Fe2O4 and Fe3O4. The number of experimentally observed Raman modes exceeds significantly
Externí odkaz:
http://arxiv.org/abs/1005.2244
Publikováno v:
Phys. Rev. B 82, 014107 (2010)
BiFeO$_3$ thin films can be epitaxially stabilized in a nearly-tetragonal phase under a high biaxial compressive strain. Here we investigate the polarized Raman spectra of constrained BiFeO$_3$ films with tetragonal-like (BFO-T), rhombohedral-like (B
Externí odkaz:
http://arxiv.org/abs/1003.2828
Autor:
Iliev, M. N., Abrashev, M. V., Laverdiere, J., Jandl, S., Gospodinov, M. M., Wang, Y. -Q., Sun, Y. -Y.
The polarized Raman spectra of orthorhombic RMnO3 series (R=La,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Y) were studied at room temperature. The variation of phonon frequencies with R ionic radius rR as a whole confirms the commonly accepted Raman line assignments wi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0510198
Publikováno v:
Phys. Rev. B 73, 224401 (2006)
We present results of our study of polarized Raman scattering and infrared reflectivity of rhombohedral ceramic La_1-ySr_yMn_1-xM_xO_3 manganites in the temperature range between 77 and 320K. In our samples, a part of the Mn atoms is substituted by M
Externí odkaz:
http://arxiv.org/abs/cond-mat/0507568
Autor:
Iliev, M. N., Popov, V. N., Litvinchuk, A. P., Abrashev, M. V., Backstrom, J., Sun, Y. Y., Meng, R. L., Chu, C. W.
The polarized Raman spectra of layered ruthenates of the Srn+1RunO3n+1 (n=1,2,3) Ruddlesden-Popper series were measured between 10 and 300 K. The phonon spectra of Sr3Ru2O7 and Sr4Ru3O10 confirmed earlier reports for correlated rotations of neighbori
Externí odkaz:
http://arxiv.org/abs/cond-mat/0408432
Autor:
Iliev, M. N., Litvinchuk, A. P., Abrashev, M. V., Popov, V. N., Cmaidalka, J., Lorenz, B., Meng, R. L.
The polarized Raman spectra of stoichiometric LaTiO$_3$ (T$_N = 150$ K) were measured between 6 and 300 K. In contrast to earlier report on half-metallic LaTiO$_{3.02}$, neither strong background scattering, nor Fano shape of the Raman lines was obse
Externí odkaz:
http://arxiv.org/abs/physics/0310097
Publikováno v:
Phye. Rev. B 212301 (2003)
The mixed-valence perovskitelike manganites are characterized by unique interrelation of Jahn-Teller distortions, electric and magnetic properties. The Jahn-Teller distortion follows the Mn(3+)->Mn(4+) charge transfer with some delay. Its development
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207298
Akademický článek
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Autor:
Tsutsumanova, G. G., Todorov, N. D., Russev, S. C., Abrashev, M. V., Ivanov, V. G., Lukoyanov, A. V.
Publikováno v:
Nanomaterials
Micro-and nanoflowers are a class of materials composed of particles with high surface-to-volume ratio. They have been extensively studied in the last decade due to simple preparation protocols and promising applications in biosensing, as drug delive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______917::008f50b8bda246fd9479fc37d6c62d7b
https://hdl.handle.net/10995/112224
https://hdl.handle.net/10995/112224