97 citations · 378 across the 21 of their papers we have counts for
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Broadband ferromagnetic resonance in Ni-Mn-Ga single crystal
Luděk Kraus, Denys Musiienko, Martin Kempa +1
We present a broadband ferromagnetic resonance study in single crystalline NiMnGa in the temperature range from room temperature to 120 °C in which the tra…
High-Frequency and Microwave Magnetic Properties of NiZnFeO Spinel Ferrite Ceramics
M. Kempa, V. Bovtun, V. Kukhar +5
Magnetic properties of the NiZnFeO (NZF) spinel ferrite ceramics were studied over a broad frequency range (1 MHz - 50 GHz). Between 10 MHz and 2 GHz, stron…
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…
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…
Can the Ferroelectric Soft Mode Trigger an Antiferromagnetic Phase Transition?
André Maia, Christelle Kadlec, Maxim Savinov +10
Type-II multiferroics, where spin interactions induce a ferroelectric polarization, are interesting for new device functionalities due to large magnetoelectric coupling. We report…
Infrared, terahertz, and microwave spectroscopy of the soft and central modes in Pb(Mg1/3Nb2/3)O3
D. Nuzhnyy, J. Petzelt, V. Bovtun +4
From the new infrared (IR) reflectivity and time-domain terahertz (THz) spectra combined with available high-frequency dielectric data above the MHz range in a broad temperature ra…