87 citations · 385 across the 12 of their papers we have counts for
13 papers · 1 filter
Defects and Oxygen Impurities in Ferroelectric Wurtzite AlScN Alloys
Naseem Ud Din, Cheng-Wei Lee, Geoff L. Brennecka +1
III-nitrides and related alloys are widely used for optoelectronics and as acoustic resonators. Ferroelectric wurtzite nitrides are of particular interest because of their potentia…
Anomalously Abrupt Switching of Ferroelectric Wurtzites
Keisuke Yazawa, John Hayden, Jon-Paul Maria +4
Ferroelectric polarization switching is one common example of a process that occurs via nucleation and growth, and understanding switching kinetics is crucial for applications such…
On the thermal and mechanical properties of MgCoNiCuZnO across the high-entropy to entropy-stabilized transition
Christina M. Rost, Daniel L. Schmuckler, Clifton Bumgardner +7
As various property studies continue to emerge on high entropy and entropy-stabilized ceramics, we seek further understanding of property changes across the phase boundary between…
A Landau-Devonshire Analysis of Strain Effects on Ferroelectric Al1-xScxN
Keisuke Yazawa, Andriy Zakutayev, Geoff L. Brennecka
We present a thermodynamic analysis of the recently discovered nitride ferroelectric materials using the classic Landau-Devonshire approach. The electrostrictive and dielectric sti…
Ionic Bonds Control Ferroelectric Behavior in Wurtzite Nitrides
Keisuke Yazawa, John Mangum, Prashun Gorai +2
Ferroelectricity enables key integrated technologies from non-volatile memory to precision ultrasound. Wurtzite ferroelectric Al1-xScxN has recently attracted attention because of…
Improving Reproducibility of Sputter Deposited Ferroelectric Wurtzite Al0.6Sc0.4N Films using In-situ Optical Emission Spectrometry
Daniel Drury, Keisuke Yazawa, Allison Mis +3
High-Sc Al1-xScxN thin films are of tremendous interest because of their attractive piezoelectric and ferroelectric properties, but overall film quality and reproducibility are wid…
Reduced Coercive Field in Epitaxial Thin Film of Ferroelectric Wurtzite Al0.7Sc0.3N
Keisuke Yazawa, Daniel Drury, Andriy Zakutayev +1
The first epitaxial ferroelectric wurtzite film with clear polarization-electric field hysteresis behavior is presented. The coercive field of this epitaxial Al0.7Sc0.3N film on W/…
Thin Film Growth Effects on Electrical Conductivity in Entropy Stabilized Oxides
Valerie Jacobson, Dave Diercks, Bobby To +2
Entropy stabilization has garnered significant attention as a new approach to designing novel materials. Much of the work in this area has focused on bulk ceramic processing, leavi…
Synthesis of ferroelectric LaWN3 -- the first nitride perovskite
Kevin R. Talley, Craig L. Perkins, David R. Diercks +2
Next generation telecommunication technologies would benefit from strong piezoelectric and ferroelectric response in materials that are compatible with nitride radio-frequency elec…
COMBIgor: data analysis package for combinatorial materials science
Kevin R. Talley, Sage R. Bauers, Celeste L. Melamed +9
Combinatorial experiments involve synthesis of sample libraries with lateral composition gradients requiring spatially-resolved characterization of structure and properties. Due to…
Large Piezoelectric Response of van der Waals Layered Solids
Sukriti Manna, Prashun Gorai, Geoff L. Brennecka +2
The bulk piezoelectric response, as measured by the piezoelectric modulus tensor (\textbf{d}), is determined by a combination of charge redistribution due to strain and the amount…
Enhanced piezoelectric response of AlN via CrN alloying
Sukriti Manna, Kevin R. Talley, Prashun Gorai +5
Since AlN has emerged as an important piezoelectric material for a wide variety of applications, efforts have been made to increase its piezoelectric response via alloying with tra…
Tuning the piezoelectric and mechanical properties of the AlN system via alloying with YN and BN
Sukriti Manna, Geoff L. Brennecka, Vladan Stevanović +1
Recent advances in microelectromechanical systems often require multifunctional materials, which are designed so as to optimize more than one property. Using density functional the…