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Current Research
The focus of Renat Sabirianov’s current research is theoretical studies of magnetic, ferroelectric and oxide nanostructures with potential applications for storage, sensor and biomedical applications. The research in performed in close collaboration with experimental groups from University of Nebraska, UN Medical Center and other institutions. The current research is funded by Nebraska Research Initiative and MRSEC-supplement (National Science Foundation).
Recent research topics include:
Piezomagnetic antiperovskite materials and heterostructures. In collaboration with Kirill Belaschenko (UNL).
Electron and spin transport in magnetic nanowires and nanocontacts. In collaboration with E. Tsymbal and A. Sokolov (UNL).
Electroresistive properties of Metal-Insulator heterostructures. In collaboration with A. Sokolov (UNL).
Ferroelectric properties of thin films. In collaboration with E. Tsymbal (UNL), W. N. Mei (UNO)
Surface properties of TM oxides (ZrO2, TiO2) Superhydrophilic/hydrophobic surfaces. The objective is to develop surfaces of materials with good wear (tough and with low friction) for orthopedic implants. In collaboration with Fereydoon Namavar (UNMC).
Adatom diffusion and growth processes on metal surfaces. In collaboration with K.J. Cho, (UT Dallas).
Finite temperature properties of magnetic materials: Ab-initio Monte Carlo simulations.
Theory of magnetic properties of rare earth compounds: current studies are focused on the parameters controlling interface coupling in exchange spring magnets. In collaboration with Qiming Zhang and Ping Liu (UT, Arlington, TX).
Magnetic properties of 3d metals and their alloys, exchange interactions, spin density excitations and waves.
Magnetic properties of nanostructures: The effects of the size of the nanoparticles and surface termination are examined using first-principle methods in combination with finite temperature classical Heisenberg model Monte Carlo simulations. In collaboration with Hao Zeng (SUNY Buffalo, NY).
Recent Publications
F. Namavar, G. Wang, C. L. Cheung, R. Sabirianov, X. C. Zeng, W.N. Mei, J. Bai, J. R. Brewer, H. Haider and K.L. Garvin, “Thermal stability of nanostructurally stabilized zirconium oxide”, Nanotechnology 18 (2007).
C.-G. Duan, R. F. Sabiryanov, W.-N. Mei, S. S. Jaswal, and E. Y. Tsymbal, “Interface effect on ferroelectricity at the nanoscale”, Nano Letters 6, 483 (2006).
J. D. Burton, R. F. Sabirianov, S. S. Jaswal, E. Y. Tsymbal, and O. N. Mryasov, “Magnetic moment softening and domain wall resistance in Ni nanowires”, Physical Review Letters 97, 077204 (2006).
C.-G. Duan, R. F. Sabiryanov, J. Liu, W. N. Mei, P. A. Dowben, and J. R. Hardy, “Strain induced half-metal to semiconductor transition in GdN”, Physical Review Letters 94, 237201 (2005).
R. F. Sabiryanov, M. I. Larsson, K. Cho, W. D. Nix, B. M. Clemens, “Surface Diffusion and Growth of Patterned Nanostructures on Strained Surfaces”, Physical Review B 67, 125412-5412 (2003).
M. I. Larsson, R. F. Sabiryanov, K. Cho, B. M. Clemens, BM, “Surface Strain Effects on Adatom Kinetics and Self-Assembly”, Surface Science 536, L389-L395 (2003).
H. Zeng, R. F. Sabirianov, O. Mryasov, M. L. Yan, K. Cho, D. J. Sellmyer, “Curie Temperature of FePt : B2O3Nanocomposite Films”, Physical Review B 66, 184425-4425 (2002).
Y. Qiang, R. F. Sabiryanov, S. S. Jaswal, Y. Liu, H. Haberland, and D. J. Sellmyer, “Magnetism of Co Nanocluster Films”, Physical Review B 66, 064404 (2002).
R. F. Sabiryanov and S. S. Jaswal, “Magnons and magnon-phonon interactions in iron”, Physical Review Letters 83, 2062 (1999).
R. F. Sabiryanov and S. S. Jaswal, “Ab-initio calculations of the Curie temperature of complex permanent-magnet materials”, Physical Review Letters 79, 155 (1997).