Search Results - "Casamento, Joseph"
-
1
The new nitrides: layered, ferroelectric, magnetic, metallic and superconducting nitrides to boost the GaN photonics and electronics eco-system
Published in Japanese Journal of Applied Physics (01-06-2019)“…The nitride semiconductor materials GaN, AlN, and InN, and their alloys and heterostructures have been investigated extensively in the last 3 decades, leading…”
Get full text
Journal Article -
2
Infrared Signatures for Phase Identification in Hafnium Oxide Thin Films
Published in ACS nano (12-12-2023)“…Phase identification in HfO2-based thin films is a prerequisite to understanding the mechanisms stabilizing the ferroelectric phase in these materials, which…”
Get full text
Journal Article -
3
Strong effect of scandium source purity on chemical and electronic properties of epitaxial ScxAl1−xN/GaN heterostructures
Published in APL materials (01-09-2021)“…Epitaxial multilayer heterostructures of ScxAl1−xN/GaN with Sc contents x = 0.11–0.45 are found to exhibit significant differences in structural quality,…”
Get full text
Journal Article -
4
Lattice-matched multiple channel AlScN/GaN heterostructures
Published in APL materials (01-10-2024)“…AlScN is a new wide bandgap, high-k, ferroelectric material for radio frequency (RF), memory, and power applications. Successful integration of high-quality…”
Get full text
Journal Article -
5
The Interplay Between Ferroelectricity and Electrochemical Reactivity on the Surface of Binary Ferroelectric AlxB1‐xN
Published in Advanced electronic materials (01-02-2024)“…Polarization dynamics and domain structure evolution in ferroelectric Al0.93B0.07N are studied using piezoresponse force microscopy and spectroscopies in…”
Get full text
Journal Article -
6
Magnetic properties of MBE grown Mn4N on MgO, SiC, GaN and Al2O3 substrates
Published in AIP advances (01-01-2020)“…Mn4N is a compound magnetic material that can be grown using MBE while exhibiting several desirable magnetic properties such as strong perpendicular magnetic…”
Get full text
Journal Article -
7
Magnetic properties of MBE grown Mn4N on MgO, SiC, GaN andAl2O3 substrates
Published in AIP advances (01-01-2020)“…Mn4N is a compound magnetic material that can be grown using MBE whileexhibiting several desirable magnetic properties such as strong perpendicular…”
Get full text
Journal Article -
8
Materials Relevant to Realizing a Field-Effect Transistor Based on Spin-Orbit Torques
Published in IEEE journal on exploratory solid-state computational devices and circuits (01-12-2019)“…Spin-orbit torque (SOT) is a promising mechanism for writing magnetic memories, while field-effect transistors (FETs) are the gold-standard device for logic…”
Get full text
Journal Article -
9
Oxygen Incorporation in the Molecular Beam Epitaxy Growth of ScxGa1−xN and ScxAl1−xN
Published in physica status solidi (b) (01-04-2020)“…Secondary‐ion mass spectrometry (SIMS) is used to determine impurity concentrations of carbon and oxygen in two scandium‐containing nitride semiconductor…”
Get full text
Journal Article -
10
Thermal conductivity enhancement of aluminum scandium nitride grown by molecular beam epitaxy
Published in Materials research letters (02-12-2023)“…Aluminum scandium nitride (AlScN) has been receiving increasing interest for radio frequency microelectromechanical systems because of their higher achievable…”
Get full text
Journal Article -
11
Molecular beam epitaxial growth of scandium nitride on hexagonal SiC, GaN, and AlN
Published in Applied physics letters (21-10-2019)“…RF plasma assisted MBE growth of scandium nitride (ScN) thin films on Ga-polar GaN (0001)/SiC, Al-polar AlN (0001)/Al2O3, and Si-face 6H-SiC (0001) hexagonal…”
Get full text
Journal Article -
12
Oxygen Incorporation in the Molecular Beam Epitaxy Growth of Sc x Ga 1− x N and Sc x Al 1− x N
Published in physica status solidi (b) (01-04-2020)Get full text
Journal Article -
13
Structural and piezoelectric properties of ultra-thin ScxAl1−xN films grown on GaN by molecular beam epitaxy
Published in Applied physics letters (14-09-2020)“…ScxAl1−xN (x = 0.18–0.40) thin films of ∼28 nm thickness grown on metal polar GaN substrates by molecular beam epitaxy are found to exhibit smooth morphology…”
Get full text
Journal Article -
14
In Situ Crystalline AlN Passivation for Reduced RF Dispersion in Strained‐Channel AlN/GaN/AlN High‐Electron‐Mobility Transistors
Published in Physica status solidi. A, Applications and materials science (01-02-2022)“…The recent demonstration of ≈ 2 W mm−1 output power at 94 GHz in AlN/GaN/AlN high‐electron‐mobility transistors (HEMTs) has established AlN as a promising…”
Get full text
Journal Article -
15
Semiconducting High-Entropy Chalcogenide Alloys with Ambi-ionic Entropy Stabilization and Ambipolar Doping
Published in Chemistry of materials (28-07-2020)“…Entropy stabilization is a novel materials-design paradigm to realize new compounds with widely tunable properties. However, almost all entropy-stabilized…”
Get full text
Journal Article -
16
Dielectric properties of disordered A 6 B 2 O 17 (A = Zr; B = Nb, Ta) phases
Published in Journal of the American Ceramic Society (01-10-2024)“…We report on the structure and dielectric properties of ternary A 6 B 2 O 17 (A = Zr; B = Nb, Ta) thin films and ceramics. Thin films are produced via sputter…”
Get full text
Journal Article -
17
Transport properties of polarization-induced 2D electron gases in epitaxial AlScN/GaN heterojunctions
Published in Applied physics letters (07-11-2022)“…AlScN is attractive as a lattice-matched epitaxial barrier layer for incorporation in GaN high electron mobility transistors due to its large dielectric…”
Get full text
Journal Article -
18
InSitu Crystalline AlN Passivation for Reduced RF Dispersion in Strained‐Channel AlN/GaN/AlN High‐Electron‐Mobility Transistors
Published in Physica status solidi. A, Applications and materials science (01-02-2022)“…The recent demonstration of ≈2 W mm−1 output power at 94 GHz in AlN/GaN/AlN high‐electron‐mobility transistors (HEMTs) has established AlN as a promising…”
Get full text
Journal Article -
19
Dielectric properties of disordered A6B2O17 (A = Zr; B = Nb, Ta) phases
Published in Journal of the American Ceramic Society (01-10-2024)“…We report on the structure and dielectric properties of ternary A6B2O17 (A = Zr; B = Nb, Ta) thin films and ceramics. Thin films are produced via sputter…”
Get full text
Journal Article -
20
Epitaxial ScxAl1−xN on GaN exhibits attractive high-K dielectric properties
Published in Applied physics letters (11-04-2022)“…Epitaxial ScxAl1−xN thin films of ∼100 nm thickness grown on metal polar GaN substrates are found to exhibit significantly enhanced relative dielectric…”
Get full text
Journal Article