Results 41 to 50 of about 2,269 (194)

The Primary Origin of Excellent Dielectric Properties of (Co, Nb) Co-Doped TiO₂ Ceramics: Electron-Pinned Defect Dipoles vs. Internal Barrier Layer Capacitor Effect

Molecules, 2021
(Co, Nb) co-doped rutile TiO2 (CoNTO) nanoparticles with low dopant concentrations were prepared using a wet chemistry method. A pure rutile TiO2 phase with a dense microstructure and homogeneous dispersion of the dopants was obtained.
Theeranuch Nachaithong, Narong Chanlek, Pairot Moontragoon, Prasit Thongbai   +3 more
doaj   +1 more source

Origins of high–performance giant dielectric properties in TiO2 co-doped with aliovalent ions via broadband dielectric spectroscopy

Results in Physics, 2023
(Zn1/3Ta2/3)xTi1-xO2 ceramics with x  = 0.01 (ZnTTO-1 %) and x  = 0.1 (ZnTTO-10 %) were prepared by a solid-state reaction method. Remarkably, the ZnTTO-1 % and ZnTTO-10 % ceramics sintered at 1500 °C for 2 h showed a high dielectric permittivity of ...
Nateeporn Thongyong, Narong Chanlek, Masaki Takesada, Prasit Thongbai   +3 more
doaj   +1 more source

Origin of colossal permittivity in BaTiO3 via broadband dielectric spectroscopy [PDF]

Journal of Applied Physics, 2013
Barium titanate (BT) ceramics with Ba/Ti ratios of 0.95 and 1.00 were synthesized using spark plasma sintering (SPS) technique. Dielectric spectroscopy (frequency range from 40 Hz to 1 MHz and temperature range from 300 K to 30 K) was performed on those ceramics (SPS BT). SPS BT showed extremely high permittivity up to ∼105, which can be referred to as
Han, Hyuksu, Voisin, Christophe, Guillemet-Fritsch, Sophie, Dufour, Pascal, Tenailleau, Christophe, Turner, Christopher, Nino, Juan C.   +6 more
openaire   +3 more sources

Dielectric relaxations and low dissipation factor with excellent temperature stability of Ti1-x(Co1/3Ta2/3)xO2 ceramics

Results in Physics, 2023
Low dissipation factor (tanδ) and excellent temperature stability of high dielectric permittivity are obtained in Ti1-x(Co1/3Ta2/3)xO2 ceramics, which were prepared using a mixed oxide method.
Theeranuch Nachaithong, Narong Chanlek, Pairot Moontragoon, Pornjuk Srepusharawoot, Prasit Thongbai   +4 more
doaj   +1 more source

Glassy freezing of orbital dynamics in FeCr2S4 and FeSc2S4

, 2005
We report on a thorough dielectric investigation of the glass-like freezing of the orbital reorientation-dynamics, recently found for the crystalline sulpho-spinels FeCr2S4 and FeSc2S4.
A. Loidl, Binder, Birge, Brand, Brossard, Cole, Ediger, Elliott, Fichtl, Fritsch, Höchli, J. Hemberger, Jonscher, Lunkenheimer, Lunkenheimer, P. Lunkenheimer, R. Fichtl, Schneider, Seeger, Sillescu, V. Tsurkan   +20 more
core   +1 more source

Colossal Strain Tuning of Ferroelectric Transitions in KNbO₃ Thin Films. [PDF]

Adv Mater
Colossal strain tuning of ferroelectricity is demonstrated in biaxially compressive strained epitaxial KNbO3 thin films, demonstrating a dramatic strain enhancement of ferroelectric polarization and the Curie temperature, eliminating all bulk phase transitions and stabilizing a single tetragonal phase from 5 K to 975 K. Abstract Strong coupling between
Hazra S, Schwaigert T, Ross A, Lu H, Saha U, Trinquet V, Akkopru-Akgun B, Gregory BZ, Mangu A, Sarker S, Kuznetsova T, Sarker S, Li X, Barone MR, Xu X, Freeland JW, Engel-Herbert R, Lindenberg AM, Singer A, Trolier-McKinstry S, Muller DA, Rignanese GM, Salmani-Rezaie S, Stoica VA, Gruverman A, Chen LQ, Schlom DG, Gopalan V.   +27 more
europepmc   +2 more sources

Multiferroicity and colossal magneto-capacitance in Cr-thiospinels

, 2006
The sulfur based Cr-spinels RCr2S4 with R = Cd and Hg exhibit the coexistence of ferromagnetic and ferroelectric properties together with a pronounced magnetocapacitive coupling.
Fichtl, R., Hemberger, J., Loidl, A., Lunkenheimer, P., Tsurkan, V., Weber, S.   +5 more
core   +1 more source

Nonradiating sources for efficient wireless power transfer

Nanophotonics, 2021
Nonradiating sources of energy realized under a wave scattering on high-index dielectric nanoparticles have attracted a lot of attention in nano-optics and nanophotonics.
Zanganeh Esmaeel, Song Mingzhao, Valero Adrià Canós, Shalin Alexander S., Nenasheva Elizaveta, Miroshnichenko Andrey, Evlyukhin Andrey, Kapitanova Polina   +7 more
doaj   +1 more source

Scaling of THz-conductivity at metal-insulator transition in doped manganites

, 2006
Magnetic field and temperature dependence of the Terahertz conductivity and permittivity of the colossal magnetoresistance manganite Pr_{0.65}Ca_{0.28}Sr_{0.07}MnO_3 (PCSMO) is investigated approaching the metal-to-insulator transition (MIT) from the ...
A. A. Mukhin, A. K. Jonscher, A. K. Zvezdin, A. Loidl, A. M. Balbashov, A. Pimenov, A. R. Long, D. Ivannikov, E. L. Nagaev, H. Böttger, M. Biberacher, M. Born, N. F. Mott, Yu. G. Goncharov, Z. Jirák   +14 more
core   +1 more source

Electrode Polarization Effects in Broadband Dielectric Spectroscopy [PDF]

, 2011
In the present work, we provide broadband dielectric spectra showing strong electrode polarization effects for various materials, belonging to very different material classes.
A. Kudlik, A. Loidl, A. Loidl, A. Pimenov, A. Pimenov, A. Seeger, A. Serghei, A.I. Ritus, B. Renner, B.A. Mazzeo, C.C. Homes, C.C. Wang, D. Ravaine, D.R. Franceschetti, D.W. Davidson, F. Bordi, G. Catalan, G. Deng, H. Fricke, H. Sanabria, H.C. Chang, H.P. Schwan, H.P. Schwan, H.P. Schwan, J. Sebald, J.B. Bates, J.C. Dyre, J.C. Dyre, J.E. Bauerle, J.R. Macdonald, J.R. Macdonald, J.R. Macdonald, J.R. Macdonald, J.R. Macdonald, J.R. Macdonald, J.R. Sandifer, K.S. Cole, L. Nyikos, M. Armand, M. Köhler, M. Umino, M. Wolf, M. Wolf, M.C. Ferrarelli, M.C.C. Ribeiro, M.M. Springer, M.Z. Bazant, M.Z. Bazant, N. Biskup, N.A. Spaldin, O. Bidault, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P. Lunkenheimer, P.H. Bottelberghs, R. Gulich, R. Gulich, R.H. Cole, R.J. Klein, S. Emmert, S. Havriliak, S. Kastner, S. Kastner, S. Krohns, S. Krohns, S. Krohns, S.H. Liu, S.W. Cheong, T. Welton, U. Schneider, U.T. Hochli, W. Scheider, Y. Feldman, Y. Feldman   +78 more
core   +3 more sources