Mechanism of microwave heating of dielectric and magnetic materials by means of atomistic theories

Motohiko Tanaka, Maxim Ignatenko, Hirohiko Kono, Koji Maruyama, Yasunari Zempo

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Heating of materials by microwaves is selective and dependent on their properties. Dielectric materials are efficiently heated by the electric field of microwaves while magnetic materials by the magnetic field. We emphasize that electron system first responds to microwaves to absorb energy, and that a path of steady and irreversible energy flow from electrons to lattice atoms must be present. We showed using a classical Heisenberg model that dissipation is essential for energy relaxation [Phys.Rev.B, 2009]. However, the origin of dissipation has yet to be identified where mediation of electromagnetic waves - spin waves and/or hypersound waves is highly expected. We are performing both classical Heisenberg and ab initio simulations to elucidate the origin of dissipation from atomistic level. Our concern is whether such dissipation is materials specific or universal. In this paper, we will present our theoretical study of magnetic material heating in the microwave magnetic field.

本文言語English
ホスト出版物のタイトルMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
ページ2903-2906
ページ数4
出版ステータスPublished - 2010 12 1
イベントMaterials Science and Technology Conference and Exhibition 2010, MS and T'10 - Houston, TX, United States
継続期間: 2010 10 172010 10 21

出版物シリーズ

名前Materials Science and Technology Conference and Exhibition 2010, MS and T'10
4

Other

OtherMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
CountryUnited States
CityHouston, TX
Period10/10/1710/10/21

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

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