Publications (12)
Close-circuit domain quadruplets in BaTiO nanorods embedded in SrTiO film
V. Stepkova, P. Marton, N. Setter +1
Cylindrical BaTiO3 nanorods embedded in (100)-oriented SrTiO3 epitaxial film in a brush-like configuration are investigated in the framework of the Ginzburg-Landau-Devonshire model…
Lattice dynamics and antiferroelectricity in PbZrO tested by X-ray and Brillouin light scattering
R. G. Burkovsky, A. K. Tagantsev, K. Vaideeswaran +13
We report the results of comprehensive study of the critical dynamics of the prototype perovskite antiferroelectric PbZrO. The combination of inelastic X-ray and diffuse X-ray…
Bichiral structure of feroelectric domain wall driven by flexoelectricity
P. V. Yudin, A. K. Tagantsev, E. A. Eliseev +2
The influence of flexoelectric coupling on the internal structure of neutral domain walls in tetragonal phase of perovskite ferroelectrics is studied. The effect is shown to lower…
Dielectric relaxation and polar phonon softening in relaxor ferroelectric PbMg_(1/3)Ta_(2/3)O_3
S. Kamba, D. Nuzhnyy, S. Veljko +8
Relaxor ferroelectric PbMg_1/3Ta_2/3O_3 ceramics and thin films were investigated by means of broad-band dielectric, time-domain terahertz (THz) and Fourier-transform infrared (IR)…
Nonvolatile ferroelectric control of ferromagnetism in (Ga,Mn)As
I. Stolichnov, S. W. E. Riester, H. J. Trodahl +7
There is currently much interest in materials and structures that provide coupled ferroelectric and ferromagnetic responses, with a long-term goal of developing new memories and sp…
Central mode and soft mode behavior in PbMg1/Nb2/3O3 relaxor ferroelectric
S. Kamba, M. Kempa, V. Bovtun +3
The relaxor ferroelectric PbMg1/Nb2/3O3 was investigated by means of broad-band dielectric and Fourier Transform Infrared (FTIR) transmission spectroscopy in the frequency range fr…
Landau thermodynamic potential for BaTiO_3
Y. L. Wang, A. K. Tagantsev, D. Damjanovic +4
In the paper, the description of the dielectric and ferroelectric properties of BaTiO_3 single crystals using Landau thermodynamic potential is addressed. Our results suggest that…
Raman spectroscopy of (K,Na)NbO3 and ((K,Na)1-xLix)NbO3
H. J. Trodahl, N. Klein, D. Damjanovic +4
A Raman scattering spectroscopy study is reported through all four phases of a (K0.5Na0.5)NbO3 crystal and ((K0.5Na0.5)1-xLix)NbO3 for x=0.02 and 0.03. The transitions among the fe…
Polar phonons in some compressively stressed epitaxial and polycrystalline SrTiO3 thin films
D. Nuzhnyy, J. Petzelt, S. Kamba +5
Several SrTiO3 (STO) thin films without electrodes processed by pulsed laser deposition, of thicknesses down to 40 nm, were studied using infrared transmission and reflection spect…
Anharmonicity of BaTiO_3 single crystals
Y. L. Wang, A. K. Tagantsev, D. Damjanovic +3
By analyzing the dielectric non-linearity with the Landau thermodynamic expansion, we find a simple and direct way to assess the importance of the eighth order term. Following this…
Far-infrared soft mode behavior in PST thin films
S. Kamba, M. Berta, M. Kempa +3
Temperature dependences of the optic phonons in sol-gel films deposited on sapphire substrates were studied by means of Fourier transform far-infrared t…
Uniaxial-stress induced phase transitions in [001]c-poled 0.955Pb(Zn1/3Nb2/3)O3-0.045PbTiO3
P. -E. Janolin, M. Davis, B. Dkhil +2
First-order, rhombohedral to orthorhombic, stress-induced phase transitions have been evidenced by bulk charge-stress measurements and X-ray diffraction derived lattice strain meas…