Results 41 to 50 of about 15,119 (267)

Suppression of interfacial polarization via enhancement of entropy, grain resistance and optical band-gap strategies in perovskite ceramics

Scientific Reports
The development of dielectric ceramics for energy storage applications requires suppression of interfacial polarization (IFPs) and elevation of grain resistance to obtain high energy storage density and foster breakdown strength.
Amira A Kamal, Asmaa Al-Rasheedi, K. A. Aly, Abd El-razek Mahmoud   +3 more
doaj   +1 more source

Preparation, Thermal, and Physical Properties of Perovskite-Type (C₃H₇NH₃)₂CdCl₄ Crystals

Crystals, 2019
To investigate the thermal and physical properties of perovskite-type (C3H7NH3)2CdCl4, its temperature-dependent chemical shifts and spin⁻lattice relaxation times are measured using thermogravimetric analysis (TGA), differential scanning ...
Ae Ran Lim, Sun Ha Kim
doaj   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Aging effect evolution during ferroelectric-ferroelectric phase transition: A mechanism study

AIP Advances, 2013
Aging can significantly modify the dielectric, piezoelectric, and ferroelectric performance of ferroelectrics. However, little attention has been paid to the aging effect during ferroelectric-ferroelectric phase transitions that is essentially correlated
Zuyong Feng, Zhenxiang Cheng, Dongqi Shi, Shixue Dou   +3 more
doaj   +1 more source

Titanium Suboxides Responsible for Electronic Anomaly Near Room Temperature in the Ti3C2Tx MXene

Advanced Functional Materials, EarlyView.
Our multi‐technique study reveals that the near‐room‐temperature anomaly in Ti3C2Tx MXene is linked to titanium suboxide nanodomains, including Ti3O5, embedded within the MXene host. Their temperature‐driven transformation provides an alternative explanation to solvent‐ and swelling‐based models and offers new insight into the thermally activated ...
Bence G. Márkus, Bradlee J. McIntosh, Lili Vajtai, Anna Nyáry, Sándor H. Sipos, Nirmal J. Ghimire, Ferenc Simon, László Forró, Dávid Beke   +8 more
wiley   +1 more source

Deterministic control of ferroelectric polarization by ultrafast laser pulses

Nature Communications, 2022
Controlling the electric polarization in ferroelectric materials at room temperature is an important aspect in the design of novel ferroelectric-based devices.
Peng Chen, Charles Paillard, Hong Jian Zhao, Jorge Íñiguez, Laurent Bellaiche   +4 more
doaj   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Superior disrupting ferroelectric phase of (Ba Sr)Nb2O6 tungsten bronze structure via high entropy and cations disorder for ultrahigh breakdown strength

Scientific Reports
High configurational entropy (ΔS) dielectric ceramics possess a unique competitive advantage in electronic applications due to their high-power density and excellent reliability.
Marwa Kamal, Manal Mohammed Alhazmi, Abd El-razek Mahmoud   +2 more
doaj   +1 more source

Periodically-arrayed ferroelectric nanostructures induced by strain concentration in SrTiO3

Nihon Kikai Gakkai ronbunshu, 2019
Ferroelectric behavior in mechanically strained SrTiO3 nanoporous is investigated using phase-field models. We find, in the paraelectric nanoporous, periodically arrayed ferroelectric nano-region is formed due to strain concentration, namely ...
Kairi MASUDA, Le Van Lich, Takahiro SHIMADA, Takayuki KITAMURA   +3 more
doaj   +1 more source

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

Advanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source