High-coercivity hexaferrite ceramics featuring sub-terahertz ferromagnetic resonance
Journal article published in 2022 by
Evgeny A. Gorbachev 
,
Lev A. Trusov ,
Liudmila N. Alyabyeva ,
Ilya V. Roslyakov,
Vasily A. Lebedev ,
Ekaterina S. Kozlyakova ,
Oxana V. Magdysyuk,
Alexey V. Sobolev,
Iana S. Glazkova,
Sergey A. Beloshapkin,
Boris P. Gorshunov,
Pavel E. Kazin
,
Lev A. Trusov ,
Liudmila N. Alyabyeva ,
Ilya V. Roslyakov,
Vasily A. Lebedev ,
Ekaterina S. Kozlyakova ,
Oxana V. Magdysyuk,
Alexey V. Sobolev,
Iana S. Glazkova,
Sergey A. Beloshapkin,
Boris P. Gorshunov,
Pavel E. Kazin
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Abstract
Dense ceramics were obtained by annealing single-domain Al-doped hexaferrite particles. The materials possess giant coercivities and natural ferromagnetic resonance at 160–280 GHz. A large blueshift of the ferromagnetic resonance frequency was found.