Results 81 to 90 of about 140,570 (332)

Local Dielectric Measurements of BaTiO3-CoFe2O4 Nano-composites Through Microwave Microscopy

, 2006
We report on linear and non-linear dielectric property measurements of BaTiO3 - CoFe2O4 (BTO-CFO) ferroelectro-magnetic nano-composites and pure BaTiO3 and CoFe2O4 samples with Scanning Near Field Microwave Microscopy.
Altshuler, Al’shin, Anlage, H. Zheng, R. Ramesh, Steven M. Anlage, Wood, Yi Qi   +7 more
core   +1 more source

Does a Morphotropic Phase Boundary Exist in ZrxHf1‐xO2‐Based Thin Films?

Advanced Functional Materials, EarlyView.
This study investigates 6 nm zirconium‐rich hafnium‐zirconium oxide thin–film metal–insulator–metal capacitors using a combination of experimental methods and machine learning–based molecular dynamics simulations to provide insight into the physical mechanisms that enhance the dielectric constant near 0 V and attribute it to the field‐induced ...
Pramoda Vishnumurthy, Richard Ganser, Dong‐Gyu Kim, Intak Jeon, Chang Hwa Jung, Hanjin Lim, Thomas Mikolajick, Susan Trolier‐McKinstry, Alfred Kersch, Uwe Schroeder   +9 more
wiley   +1 more source

Nanoscale dielectric properties of TiO2 in SiO2 nanocomposite deposited by hybrid PECVD method

Nano Express
In this paper, nanocomposites (TiO _2 in SiO _2 ) are produced by an advanced hybrid aerosol-PECVD method based on direct liquid injection of a non-commercial colloidal solution in an O _2 / hexamethyldisiloxane (HMDSO) low-pressure plasma.
C Villeneuve-Faure, M Mitronika, A P Dan, L Boudou, W Ravisy, M P Besland, M Richard-Plouet, A Goullet   +7 more
doaj   +1 more source

Exploration and interpretation of dielectric relaxation parameters of binary mixtures at low temperature using TDR

Chemical Thermodynamics and Thermal Analysis
Complex permittivity spectra (CPS) of Ethyl Acetate-Xylene solutions were measured using time domain dielectric spectroscopy (TDDS) technique in 10 MHz to 50 GHz frequency range at low temperature of about 10 °C.
S.S. Birajdar, A.C. Kumbharkhane, D.B. Suryawanshi   +2 more
doaj   +1 more source

Photoconductivity‐Driven Quantum Efficiency Gain in Inorganic Ruddlesden‐Popper Layered Cs2PbBr2I2 Perovskite Photodetector for Visible Light Detection

Advanced Functional Materials, EarlyView.
Rational halogen mixing strategy was employed to shift the bandgap of Cs2PbBr2I2 from ultraviolet to visible region, enabling first realization of a visible‐light photodetector with this 2D layered Ruddlesden‐Popper perovskite material. Under illumination, light‐induced internal field forms and drives trap‐mediated persistent photoconductivity ...
Md Fahim Al Fattah, Asif Abdullah Khan, Saikiran Khamgaonkar, Majid Haji Bagheri, Danyah Khan, Md Rasidul Islam, Mahmoud Almadoun, Aixi Pan, Alexander Li, Marwa Abd‐Ellah, Vivek Maheshwari, Dayan Ban   +11 more
wiley   +1 more source

Dielectric catastrophe at the magnetic field induced insulator to metal transition in Pr1-xCaxMnO3 (x=0.30, 0.37) crystals

, 2006
The dielectric permittivity and resistivity have been measured simultaneously as a function of magnetic field in Pr1-xCaxMnO3 crystals with different doping. A huge increase of dielectric permittivity was detected near percolation threshold.
Aebischer, Aebischer, Asamitsu, B. Kundys, Bergmann, Bruggeman, Byczuk, C. Martin, Castner, Ch. Simon, Choi, Cohen, Cox, Dobrosavljevic, Efremov, Efros, Freitas, Georges, Goto, Goto, Hardy, Harris, Hubbard, Jung, Kimura, Kimura, Kiryukhin, Laad, Lorenz, Mercone, Miyano, Morimoto, N. Bellido, Noh, Pimenov, Rivadulla, Rosenbaum, Sarker, Saurel, Straley, Tu, Valenzuela, Zhang   +42 more
core   +2 more sources

Multistackable, Domino‐Overlapped CNT Scaffolds Homogeneously Hybridized with BTO‐P(VDF‐TrFE) for High‐Performance Piezoelectric Nanogenerators

Advanced Functional Materials, EarlyView.
A multilayer‐stackable carbon nanotuber (CNT) scaffold‐based piezoelectric nanogenerator (CPENG) with domino‐patterned CNT pillars presents high, stable output (12.3 V, size of 1 cm × 1 cm) over 2000 cycles, operates across a wide temperature range, and efficiently converts energy from real‐life stimuli through optimized CNT length, layer stacking, and
Kwangjun Kim, Jongwon Park, Jeong Min Park, Jong G. Ok   +3 more
wiley   +1 more source

Effective permittivity of compacted granular materials: Effects of interfacial polarization and pore-filling fluids

Theoretical and Applied Mechanics Letters
Interfacial polarization dominates the permittivity spectra of heterogeneous granular materials for the intermediate frequency range (i.e., from kHz to MHz).
Xu Wang, Chongpu Zhai, Yixiang Gan
doaj   +1 more source

Tunable Double Negative Band Structure from Non-Magnetic Coated Rods

, 2010
A system of periodic poly-disperse coated nano-rods is considered. Both the coated nano-rods and host material are non-magnetic. The exterior nano-coating has a frequency dependent dielectric constant and the rod has a high dielectric constant.
Bouchitté G, Bouchitté G Bourel C, Bouchitté G Schweizer B, Fortes S P Lipton R P Shipman S P, Fortes S P Lipton R P Shipman S P, Jelinek L, Milton G W, O'Brien S, Pendry J, Robert Lipton, Schulgasser K, Yue Chen, Zhikov V V, Zhikov V V   +13 more
core   +1 more source

Charge Transport in Ternary Charge‐Transfer Solid Solution Single Crystals

Advanced Functional Materials, EarlyView.
This study deconvolutes the roles of indirect (superexchange) and direct electronic coupling on charge transport in single crystals of an organic charge‐transfer molecular semiconductor (OSC). This model system elegantly demonstrates that structural defects introduced by chemical dopants play a significant role in the electronic performance ...
Jonathan C. Novak, Manikanta Makala, Edith L. MacKenzie, Veaceslav Coropceanu, Kimberly Agosto, Abigail A. Moravek, Oana D. Jurchescu, Ren A. Wiscons   +7 more
wiley   +1 more source