High-coercivity hexaferrite ceramics featuring sub-terahertz ferromagnetic resonance

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

doi:10.1039/d1mh01797g

High-coercivity hexaferrite ceramics featuring sub-terahertz ferromagnetic resonance

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

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Abstract

Herein, we demonstrate for the first time compact ferrite ceramics with giant coercivity. The materials are manufactured via sintering single-domain Sr_0.67Ca_0.33Fe₈Al₄O₁₉ particles synthesized by a citrate-nitrate auto-combustion method. The obtained ceramics show coercivities up to 22.5 kOe and natural ferromagnetic resonance frequencies (NFMR) in a sub-THz range of 160-282 GHz. At a maximum density of 95%, the sample displays coercivity of 18.5 kOe, which is the highest value among dense ferrite materials reported so far. In addition, we report an unusual blueshift of the NFMR frequency from 160 to 200 GHz, which occurs during material sintering.

Original language	English
Pages (from-to)	1264-1272
Number of pages	9
Journal	Materials Horizons
Volume	9
Issue number	4
DOIs	https://doi.org/10.1039/d1mh01797g
Publication status	Published - Jan 2022

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Gorbachev, E. A., Trusov, L. A., Alyabyeva, L. N., Roslyakov, I. V., Lebedev, V. A., Kozlyakova, E. S., Magdysyuk, O. V., Sobolev, A. V., Glazkova, I. S., Beloshapkin, S. A., Gorshunov, B. P., & Kazin, P. E. (2022). High-coercivity hexaferrite ceramics featuring sub-terahertz ferromagnetic resonance. Materials Horizons, 9(4), 1264-1272. https://doi.org/10.1039/d1mh01797g

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title = "High-coercivity hexaferrite ceramics featuring sub-terahertz ferromagnetic resonance",

abstract = "Herein, we demonstrate for the first time compact ferrite ceramics with giant coercivity. The materials are manufactured via sintering single-domain Sr0.67Ca0.33Fe8Al4O19 particles synthesized by a citrate-nitrate auto-combustion method. The obtained ceramics show coercivities up to 22.5 kOe and natural ferromagnetic resonance frequencies (NFMR) in a sub-THz range of 160-282 GHz. At a maximum density of 95%, the sample displays coercivity of 18.5 kOe, which is the highest value among dense ferrite materials reported so far. In addition, we report an unusual blueshift of the NFMR frequency from 160 to 200 GHz, which occurs during material sintering.",

author = "Gorbachev, {Evgeny A.} and Trusov, {Lev A.} and Alyabyeva, {Liudmila N.} and Roslyakov, {Ilya V.} and Lebedev, {Vasily A.} and Kozlyakova, {Ekaterina S.} and Magdysyuk, {Oxana V.} and Sobolev, {Alexey V.} and Glazkova, {Iana S.} and Beloshapkin, {Sergey A.} and Gorshunov, {Boris P.} and Kazin, {Pavel E.}",

note = "Publisher Copyright: {\textcopyright} 2022 The Royal Society of Chemistry.",

year = "2022",

month = jan,

doi = "10.1039/d1mh01797g",

language = "English",

volume = "9",

pages = "1264--1272",

journal = "Materials Horizons",

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T1 - High-coercivity hexaferrite ceramics featuring sub-terahertz ferromagnetic resonance

AU - Gorbachev, Evgeny A.

AU - Trusov, Lev A.

AU - Alyabyeva, Liudmila N.

AU - Roslyakov, Ilya V.

AU - Lebedev, Vasily A.

AU - Kozlyakova, Ekaterina S.

AU - Magdysyuk, Oxana V.

AU - Sobolev, Alexey V.

AU - Glazkova, Iana S.

AU - Beloshapkin, Sergey A.

AU - Gorshunov, Boris P.

AU - Kazin, Pavel E.

PY - 2022/1

Y1 - 2022/1

N2 - Herein, we demonstrate for the first time compact ferrite ceramics with giant coercivity. The materials are manufactured via sintering single-domain Sr0.67Ca0.33Fe8Al4O19 particles synthesized by a citrate-nitrate auto-combustion method. The obtained ceramics show coercivities up to 22.5 kOe and natural ferromagnetic resonance frequencies (NFMR) in a sub-THz range of 160-282 GHz. At a maximum density of 95%, the sample displays coercivity of 18.5 kOe, which is the highest value among dense ferrite materials reported so far. In addition, we report an unusual blueshift of the NFMR frequency from 160 to 200 GHz, which occurs during material sintering.

AB - Herein, we demonstrate for the first time compact ferrite ceramics with giant coercivity. The materials are manufactured via sintering single-domain Sr0.67Ca0.33Fe8Al4O19 particles synthesized by a citrate-nitrate auto-combustion method. The obtained ceramics show coercivities up to 22.5 kOe and natural ferromagnetic resonance frequencies (NFMR) in a sub-THz range of 160-282 GHz. At a maximum density of 95%, the sample displays coercivity of 18.5 kOe, which is the highest value among dense ferrite materials reported so far. In addition, we report an unusual blueshift of the NFMR frequency from 160 to 200 GHz, which occurs during material sintering.

UR - http://www.scopus.com/inward/record.url?scp=85128245054&partnerID=8YFLogxK

U2 - 10.1039/d1mh01797g

DO - 10.1039/d1mh01797g

M3 - Article

C2 - 35112123

AN - SCOPUS:85128245054

SN - 2051-6347

VL - 9

SP - 1264

EP - 1272

JO - Materials Horizons

JF - Materials Horizons

IS - 4

ER -

High-coercivity hexaferrite ceramics featuring sub-terahertz ferromagnetic resonance

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