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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
Pages2903-2906
Number of pages4
Publication statusPublished - 2010 Dec 1
EventMaterials Science and Technology Conference and Exhibition 2010, MS and T'10 - Houston, TX, United States
Duration: 2010 Oct 172010 Oct 21

Publication series

NameMaterials Science and Technology Conference and Exhibition 2010, MS and T'10
Volume4

Other

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

Keywords

  • Electron spin
  • Magnetic materials
  • Microwaves
  • Numerical simulation

ASJC Scopus subject areas

  • Materials Science (miscellaneous)

Fingerprint Dive into the research topics of 'Mechanism of microwave heating of dielectric and magnetic materials by means of atomistic theories'. Together they form a unique fingerprint.

Cite this