Results 71 to 80 of about 8,790 (190)

Stabilization of Polar Nano Regions in Pb-free ferroelectrics

, 2017
Formation of polar nano regions through solid-solution additions are known to enhance significantly the functional properties of ferroelectric materials.
Abernathy, D. L.,, Borreguero, J. M.,, Budisuharto, A. Setiadi,, Christianson, A. D.,, Dmowski, W.,, Egami, T.,, Jørgensen, M. R.V.,, Lund University., Novak, N.,, Pramanick, A.,, Weyland, F.,   +10 more
core   +1 more source

Anomalous transverse acoustic phonon broadening in the relaxor ferroelectric Pb(Mg_1/3Nb_2/3)O_3

, 2001
The intrinsic linewidth $\Gamma_{TA}$ of the transverse acoustic (TA) phonon observed in the relaxor ferroelectric compound Pb(Mg$_{1/3}$Nb$_{2/3})_{0.8}$Ti$_{0.2}$O$_3$ (PMN-20%PT) begins to broaden with decreasing temperature around 650 K, nearly 300 K
A. D. Hilton, A. Naberezhnov, B. Dkhil, B. Noheda, B. Noheda, B. Noheda, D. E. Cox, D. Vanderbilt, E. V. Colla, G. Burns, G. Burns, G. Shirane, G. Shirane, H. Fu, H. You, J. Harada, J. Zhao, L. Bellaiche, L. Bellaiche, L. E. Cross, P. M. Gehring, P. M. Gehring, P. M. Gehring, P. M. Gehring, R. Blinc, R. F. Service, S-W. Cheong, S. B. Vakhrushev, S.-E. Park, S.-G. Lee, T. Y. Koo, V. Kiryukhin, V. Westphal, W. Cochran   +33 more
core   +1 more source

Debye’s temperature and heat capacity for Sr0.15Ba0.85Bi2Nb2O9 relaxor ferroelectric ceramic [PDF]

Journal of Advanced Dielectrics, 2016
A lead-free relaxor ferroelectric, Sr0.15Ba0.85Bi2Nb2O9, was synthesized via solid-state reaction and the temperature-dependence of the heat capacity was measured in a wide temperature range.
A. Peláiz-Barranco, Y. González-Abreu, P. Saint-Grégoire, J. D. S. Guerra, F. Calderón-Piñar   +4 more
doaj   +1 more source

Relaxor behavior and morphotropic phase boundary in a simple model

, 2013
A simple model to reproduce strong enhancement of dielectric response near the morphotropic phase boundary (MPB) is proposed. This model consists of long-range dipole-dipole interaction and compositional chemical disorder incorporated by the variation in
Kato, Takeo, Tomita, Yusuke
core   +1 more source

Ultrahigh energy storage performance via defect engineering in Sr0.7Bi0.2TiO3 lead-free relaxor ferroelectrics

Journal of Materiomics
With the development of advanced electronic memory and the advocacy of environmental friendliness, lead-free relaxor ferroelectric capacitors with slim hysteresis loops have received great attention in high power energy storage applications.
Yutao Luo, Tianyang Zheng, Song Liu, Yunfei Liu, Yinong Lyu, Jin Luo   +5 more
doaj   +1 more source

Composition and grain size-driven ferroelectric-relaxor crossover in Ba(Zr,Ti)O3 ceramics [PDF]

Processing and Application of Ceramics, 2009
First Ba(ZrxTi1-x)O3 (BZT) ceramics with various compositions prepared by solid state, with high density, homogeneous microstructures and grain sizes in the range (0.7–4) μm were studied.
Cristina Elena Ciomaga, Maria T. Buscaglia, Massimo Viviani, Vincenzo Buscaglia, Liliana Mitoseriu, Paolo Nanni, Carmen Galassi   +6 more
doaj  

Soft Mode Anomalies in the Perovskite Relaxor Pb(Mg1/3Nb2/3)O3

, 2000
Neutron inelastic scattering measurements of the polar TO phonon mode in the cubic relaxor Pb(Mg1/3Nb2/3)O3, at room temperature, reveal anomalous behavior similar to that recently observed in the Pb(Zn1/3Nb2/3)_{0.92}Ti_{0.08}O3 system in which the ...
Gehring, P. M., Shirane, G., Vakhrushev, S. B.   +2 more
core   +2 more sources

Dielectric and AC-conductivity studies of Dy2O3 doped (K0.5Na0.5)NbO3 ceramics

AIP Advances, 2014
(K0.5Na0.5)NbO3 + x wt.% Dy2O3 (x = 0–1.5) ferroelectric ceramics were prepared by conventional solid state reaction method. XRD patterns revealed that orthorhombic symmetry has transformed into psuedocubic symmetry with increasing the substitution of ...
Mahesh Peddigari, Subhash Thota, Dobbidi Pamu   +2 more
doaj   +1 more source

Superparamagnetism induced by polar nanoregions in relaxor ferroelectric (1$-$$x$)BiFeO$_{3}$-$x$BaTiO$_{3}$

, 2011
A new class of superparamagnetism was found in relaxor ferroelectric 2/3BiFeO$_{3}$-1/3BaTiO$_{3}$. The size of the magnetic particle, estimated from the superparamagnetic magnetization curve, coincides with the size of the polar nanoregion (PNR), which ...
Hirota, Kazuma, Matsuura, Masato, Soda, Minoru, Wakabayashi, Yusuke   +3 more
core   +1 more source

Ground State of Relaxor Ferroelectric $Pb(Zn_{1/3}Nb_{2/3})O_3$

, 2003
High energy x-ray diffraction measurements on Pb(Zn$_{1/3}$Nb$_{2/3}$)O$_3$ (PZN) single crystals show that the system does not have a rhombohedral symmetry at room temperature as previously believed.
A. Lebon, A. Naberezhnov, B. Noheda, B. Noheda, B. Noheda, C. Stock, D. E. Cox, D. La-Orauttapong, D. La-Orauttapong, G. A. Smolensky, G. Burns, G. Shirane, Guangyong Xu, J. Kuwata, J. Kuwata, J. S. Forrester, K. Hirota, L. E. Cross, L. Zhang, S. B. Vakhrushev, S. Wakimoto, S.-E. Park, V. Bobnar, Y. Bing, Y. Uesu, Z. Zhong, Z. Zhong, Z.-G. Ye, Z.-G. Ye   +28 more
core   +1 more source