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20242026
most citedBreaking symmetry to create a parallel-plate varactor dielectric with unparalleled microwave performance

2 citations · 2 across the 6 of their papers we have counts for

collaborators

6 papers

cond-mat.mtrl-sci2026★ 2 cited

Breaking symmetry to create a parallel-plate varactor dielectric with unparalleled microwave performance

Florian Bergmann, Matthew R. Barone, Zishen Tian +24

Voltage-tunable capacitors (varactors) are key to microwave circuits. Tunable dielectric varactors outperform competing technologies in almost every relevant metric but usually suf…

cond-mat.mtrl-sci2026

Field-induced spin-flip and spin-flop transitions in NdFeO3

Mariana M. Gomes, Rui Vilarinho, E. Miranda +14

Magnetic control of correlated spin systems is central to the development of next-generation spin-based technologies. Rare-earth orthoferrites provide an interesting platform in wh…

cond-mat.mtrl-sci2025

Phonon studies of the phase transition sequence in antiferroelectric single crystal of Pb(Hf0.83Sn0.17)O3

Anirudh K. R., Cosme Milesi-Brault, Christelle Kadlec +5

The sequence of phase transitions in PbHf0.83Sn0.17O3 has been studied by THz, far infrared and Raman spectroscopies, revealing the complementary behaviour of both, polar and non-p…

cond-mat.mtrl-sci2024

Coexisting polarization mechanisms in ferroelectric uniaxial tetragonal tungsten bronze Ca_0.3Ba_0.7Nb_2O_6

E. Buixaderas, Š. Svirskas, C. Kadlec +6

Using a broad band dielectric spectroscopy approach (1 to 10^14 Hz) we prove that the tungsten bronze Ca0.3Ba0.7Nb2O6 (CBN-30) displays a ferroelectric phase transition of mixed di…

cond-mat.mtrl-sci2024

Two Displacive Ferroelectric Phase Transitions in Multiferroic Quadruple Perovskite

A. Maia, M. Kempa, V. Bovtun +6

We report on the microwave, terahertz (THz), infrared and Raman spectroscopic studies of ceramics, shedding more light into the nature of two structural phase tran…

cond-mat.mtrl-sci2024

Microwave magnetic excitations in U-type hexaferrite SrCoZnFeO ceramics

M. Kempa, V. Bovtun, D. Repček +3

Microwave (MW) transmission, absorption, and reflection loss spectra of the ferrimagnetic U-type hexaferrite SrCoZnFeO ceramics were studied from 100 MHz to 35 GH…