Results 61 to 70 of about 24,071 (183)

Origin of the large phonon band-gap in SrTiO3 and the vibrational signatures of ferroelectricity in ATiO3 perovskite: First principles lattice dynamics and inelastic neutron scattering of PbTiO3, BaTiO3 and SrTiO3

, 2008
We report first principles density functional perturbation theory calculations and inelastic neutron scattering measurements of the phonon density of states, dispersion relations and electromechanical response of PbTiO3, BaTiO3 and SrTiO3.
A. W. Hewat, Alexander I. Kolesnikov, B. Dorner, Chun-Keung Loong, D. L. Price, Eric J. Walter, F. Jona, M. Ahart, M. E. Lines, Narayani Choudhury, V. G. Gavrilyachenko   +10 more
core   +1 more source

Polar magnetic oxides from chemical ordering: A new class of multiferroics

APL Materials, 2020
Combining ferroelectricity and magnetism in the same material remains a challenge because it involves complex crystal chemistry and stringent symmetry requirements. In conventional ferroelectrics, the polarization arises from the second-order Jahn–Teller
Ravi Shankar P N, Swarnamayee Mishra, Sundaresan Athinarayanan   +2 more
doaj   +1 more source

Turning ABO$_3$ antiferroelectrics into ferroelectrics: Design rules for practical rotation-driven ferroelectricity in double perovskites and A$_3$B$_2$O$_7$ Ruddlesden-Popper compounds

, 2014
Ferroic transition metal oxides, which exhibit spontaneous elastic, electrical, magnetic or toroidal order, exhibit functional properties that find use in ultrastable solid-state memories to sensors and medical imaging technologies.
Aguado-Puente, Aleksandrov, Amisi, Belik, Benedek, Benedek, Birol, Bousquet, Brown, Caviglia, Ederer, Fukushima, Ghosez, Giannozzi, Goto, Green, Harris, He, Hill, Kimura, King, Knapp, Levin, Lufaso, López-Pérez, Martin, Perdew, Rodriguez-Martinez, Rondinelli, Rondinelli, Sinclair, Stroppa, Wahl, Woodward, Woodward, Wu   +35 more
core   +1 more source

Electronic ferroelectricity in monolayer graphene moiré superlattices

Nature Communications
Extending ferroelectric materials to two-dimensional limit provides versatile applications for the development of next-generation nonvolatile devices.
Le Zhang, Jing Ding, Hanxiao Xiang, Naitian Liu, Wenqiang Zhou, Linfeng Wu, Na Xin, Kenji Watanabe, Takashi Taniguchi, Shuigang Xu   +9 more
doaj   +1 more source

The quest for electronic ferroelectricity in organic charge-transfer crystals

, 2019
Organic ferroelectric materials are in demand in the growing field of environmentally friendly, lightweight electronics. Donor-Acceptor charge transfer crystals have been recently proposed as a new class of organic ferroelectrics, which may possess a new
Girlando, Alberto
core  

Advances in ab-initio theory of Multiferroics. Materials and mechanisms: modelling and understanding

, 2012
Within the broad class of multiferroics (compounds showing a coexistence of magnetism and ferroelectricity), we focus on the subclass of "improper electronic ferroelectrics", i.e.
A. Girlando, A. Malashevic, A. Rohrbach, A. Savin, A. Seidl, A. Stroppa, A. Stroppa, A. Stroppa, A. Stroppa, A. Stroppa, A.D. Becke, A.K. Cheetham, A.K. Kirov, A.P. Kuzmenko, A.P. Levanyuk, A.V. Kimel, B. Lorenz, B.J. Campbell, C. Adamo, C. Capillas, C. Capillas, C. Capillas, C. Ederer, C. Ederer, C. Loschen, C.N.R. Rao, D. Baldomir, D. Khomskii, D. Orobengoa, D. Vanderbilt, D.I. Khomskii, D.V. Efremov, E. Bousquet, E. Bousquet, E. Kroumova, E. Kroumova, E. Kroumova, E. Kroumova, E.J.W. Verwey, E.M. Wheeler, F. Hong, F. Kagawa, F. Kagawa, F. Kubel, F. Nad, G. Férey, G. Férey, G. Giovannetti, G. Giovannetti, G. Giovannetti, G. Giovannetti, G. Giovannetti, G. King, G. King, G. King, G. King, G. King, G. Kresse, G. Kresse, G. Kresse, G. Lawes, G. Rogez, G.P. Vorobev, H. Katsura, H. Okamoto, H. Schmidt, H. Tsunetsugu, H. Wu, H.F. Clausen, I.A. Sergienko, I.A. Sergienko, I.B. Bersuker, I.J. Dzialoshinski, I.V. Solovyev, J. Adhish, J. Brink van den, J. Hemberger, J. Heyd, J. Heyd, J. Hong, J. Kanamori, J. Lopez-Prez, J. Paier, J. Valasek, J. Wang, J.A. Alonso, J.B. Goodenough, J.B. Torrance, J.B. Torrance, J.F. Scott, J.H. Lee, J.L. Garcia-Munoz, J.M. Perez-Mato, J.M. Perez-Mato, J.M. Perez-Mato, J.M. Rondinelli, J.M. Rondinelli, J.M. Rondinelli, J.M. Rondinelli, J.P. Perdew, K. Yamauchi, K. Yamauchi, K. Yamauchi, K. Yamauchi, K.-L. Hu, K.-L. Hu, K.I. Kugel, L. Holmes, L. Neel, L. Noodleman, L. Noodleman, L. Noodleman, L. Noodleman, L.C. Chapon, M. Alexe, M. Belakhovsky, M. Cointe Le, M. Dressel, M. Filatov, M. Marsman, M. Matsubara, M. Mostovoy, M. Reehuis, M.A. black, M.I. Aroyo, M.I. Aroyo, M.J. Rosseinsky, M.T. Fernandez-Diaz, M.W. Licurse, N. Keller, N.A. Benedek, N.A. Benedek, N.A. Hill, N.A. Spaldin, N.B. Perkins, N.J. Mosey, O. Tchernyshyov, O.M. Yaghi, P. Barone, P. García, P. Ghosez, P. Hohenberg, P. Jain, P.E. Blochl, P.J. Hay, P.J. Stephens, P.W. Anderson, P.W. Anderson, P.W. Anderson, R. Ramesh, R. Ramesh, R. Resta, R. Valdes-Aguilar, R. Wojciechowski, R.D. King-Smith, R.E. Cohen, R.L. Withers, S. Blanco-Canosa, S. Garcia-Martin, S. Garcia-Martin, S. Horiuchi, S. Horiuchi, S. Horiuchi, S. Horiuchi, S. Ishibashi, S. Ishiwata, S. Ivantchev, S. Ivantchev, S. Kummel, S. Picozzi, S. Picozzi, S. Picozzi, S. Valencia, S. Weber, S.C. Parida, S.J. Luo, S.L. Gnatchenko, S.W. Cheong, T. Fukushima, T. Fukushima, T. Fukushima, T. Hoffmann, T. Kimura, T. Kurumaji, T. Moriya, T. Smith, T. Zhao, T.-Y. Khim, V. Pardo, V.I. Anisimov, V.I. Anisimov, V.Y. Pomjakushin, W. Dachraoui, W. Kohn, X.-Y. Wang, Y. Du, Y. Miyamoto, Y. Nakatsuka, Y. Okimoto, Y. Takano, Y. Tokunaga, Y. Tokunaga, Y. Tokura, Y. Yamasaki, Z.G. Soos   +204 more
core   +1 more source

Polar Dynamics at the Jahn-Teller Transition in Ferroelectric GaV4S8

, 2015
We present a dielectric spectroscopy study of the polar dynamics linked to the orbitally driven ferroelectric transition in the skyrmion host GaV4S8. By combining THz and MHz-GHz spectroscopy techniques, we succeed in detecting the relaxational dynamics ...
Kézsmárki, I., Loidl, A., Lunkenheimer, P., Ruff, E., Schmidt, M., Tsurkan, V., Wang, Zhe   +6 more
core   +1 more source

Ferroelectricity of Ice Nanotubes inside Carbon Nanotubes

, 2007
We report that ice nanotubes with odd number of side faces inside carbon nanotubes exhibit spontaneous electric polarization along its axes direction by using molecular dynamics simulations.
Chuanfu Luo, Jian Zhou, Jinming Dong, Wei Fa, Xiao Cheng Zeng   +4 more
core   +1 more source

Recent Progress in the Nanoscale Evaluation of Piezoelectric and Ferroelectric Properties via Scanning Probe Microscopy

Advanced Science, 2020
Piezoelectric and ferroelectric materials have garnered significant interest owing to their excellent physical properties and multiple potential applications.
Owoong Kwon, Daehee Seol, Huimin Qiao, Yunseok Kim   +3 more
doaj   +1 more source

Antiferroelectric Bent-Core Liquid Crystal for Possible High-Power Capacitors and Electrocaloric Devices

Crystals, 2020
We present small-angle X-ray scattering, polarized optical microscopy and electric current measurements of a sulfur-containing bent-core liquid crystal material for characterization of the layer and director structures, thermally and electrically driven ...
Rony Saha, Chenrun Feng, Alexey Eremin, Antal Jákli   +3 more
doaj   +1 more source