Results 71 to 80 of about 858,236 (306)

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

Embedded Ferroelectric Nanoclusters Can Drive Polarization Reversal in a Non‐Ferroelectric Polar Film via the Proximity Effect

Advanced Functional Materials, EarlyView.
Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska, Eugene A. Eliseev, Sergei V. Kalinin, Long‐Qing Chen, Dean R. Evans, Venkatraman Gopalan   +5 more
wiley   +1 more source

A Thermodynamic Model of Antiferroelectics and Its Application to Electric Field Induced Antiferroelectric‐Ferroelectric Transition in PbZrO3

Advanced Functional Materials, EarlyView.
A thermodynamic model that incorporates ferroelectric, antiferroelectric, and antiferrodistortive orders of PbZrO3${\rm PbZrO}_3$ is established and parameterized based on experimental measurements and first‐principles calculations. We derive a Clapeyron‐like equation for describing the temperature‐dependence of critical electric fields for the ...
Zhiyang Wang, Guodong Zhao, Aiden Ross, Long‐Qing Chen   +3 more
wiley   +1 more source

STUDIES IN ZIRCONIUM OXIDATION. [PDF]

, 1966
Study provides insight into the oxidation mechanism of zirconium by combining electrical measurements with oxidation data. The measurement of electrical potential across growing scale on zirconium and the determination of conventional weight-change oxidation data were carried out at 550, 700, and 800 degrees C.
Levitan, J., Draley, J. E., Van Drunen, C. J.   +2 more
openaire   +2 more sources

Research progress on corrosion and protection of zirconium alloys [PDF]

Journal of Hebei University of Science and Technology
Zirconium alloys are widely used as structural materials in civil power reactors, nuclear-powered aircraft carriers, nuclear submarines and space vehicles as well as medical materials due to their excellent nuclear properties and biocompatibility ...
Zishuai HU, Shujun CHEN, Boyi LI, Mankun LI, Jianhui LI, Dan LIU   +5 more
doaj   +1 more source

The initial stages of the oxidation of zirconium

, 2005
The initial, thermal oxidation of bare polycrystalline Zr substrates has been investigated using angle-resolved X-ray photoelectron spectroscopy (AR-XPS) and in-situ, spectroscopic ellipsometry (SE). Oxidation experiments were performed by exposure of a bare Zr substrate for various times in pure O2 gas at various temperatures (T) and partial oxygen ...
openaire   +3 more sources

Preparation of palladium membrane over porous stainless steel tube modified with zirconium oxide

, 2004
A palladium membrane has been prepared by electroless plating on the surface of a porous stainless steel tube. Since the large surface pores of the tube are obstacle for preparation of a defect-free palladium film on the surface, zirconium oxide ...
Tong, HH, Matsumura, Y, Wang, D, Xu, HY
core   +1 more source

Ferroelectric Polarization Enabled Threshold Voltage Modulation in High Electron Mobility Transistor

Advanced Functional Materials, EarlyView.
A comprehensive model is developed to capture the coupled electrostatics of a ferroelectric capacitor and a metal‐insulator‐semiconductor high electron mobility transistor (MISHEMT) connected in ferroelectric‐metal high electron mobility transistor (FeMHEMT) configuration.
Wentian Gao, Andre Wachowiak, Thomas Mikolajick, Uwe Schroeder, Roberto Guido   +4 more
wiley   +1 more source

Influence of nanofluid on performance improvement of dielectric properties and dissolved gases in oil-immersed power transformers

Discover Nano
Transformer reliability is strongly governed by the condition of insulating oil; however, limited studies have directly compared real-time aged transformer oil with standardized accelerated-aged oil or evaluated nanofluid performance in aged insulation ...
Abdul Suboor, Aejaz Masood, Asfar Ali Khan, Shabana Urooj, Mujib Ullah Zuberi, Shakeb A. Khan, Obaidur Rahman, Shaheen Parveen, Farhad Ilahi Bakhsh   +8 more
doaj   +1 more source

Atom Probe Tomography as an Emerging Tool for Understanding Defect‑Driven Mechanisms in HfO2‑Based Ferroelectrics

Advanced Functional Materials, EarlyView.
This Perspective highlights atom probe tomography as a powerful tool for understanding the atomic‐scale defect chemistry in HfO2‐based ferroelectrics. 3D mapping of dopants, point defects, and interface chemistry can provide new insight into defect‐driven mechanisms underpinning the ferroelectricity in the system and guide the design of more reliable ...
Kasper Hunnestad, Catherine Dubourdieu, Alexei Gruverman, Dennis Meier   +3 more
wiley   +1 more source