Magnetic-field-assisted giant penetration of a radio-frequency electromagnetic field in lanthanum manganites

Author

Rinkevich, A. ; Nossov, A. ; Rigniant, M. ; Ustinov, V. ; Vassiliev, V. ; Vladimirova, E. ; Slobodin, B.

Author_Institution

Inst. of Metal Phys., Acad. of Sci., Ekaterinburg, Russia

Volume

38

Issue

1

fYear

2002

fDate

1/1/2002 12:00:00 AM

Firstpage

257

Lastpage

259

Abstract

The penetration of an electromagnetic field in the frequency range of 20 kHz to 30 MHz through the plates of bulk polyerystalline sintered La_0.60Pb_0.4MnO₃ and La_0.70Y _0.07Ba_0.23MnO₃ manganites was studied. A giant increase, up to 10 times, of the transmission coefficient, on application of the magnetic field, was found. Skin depth variations were caused mainly by variation of the dynamical reversible magnetic permeability. The contribution of the magnetic permeability dispersion to the frequency dependence of skin depth was clarified

Keywords

barium compounds; colossal magnetoresistance; ferromagnetic materials; lanthanum compounds; lead compounds; magnetic permeability; skin effect; yttrium compounds; 20 kHz to 30 MHz; La_0.60Pb_0.4MnO₃; La_0.70Y_0.07Ba_0.23MnO₃; frequency dependence; magnetic permeability dispersion; magnetic-field-assisted giant penetration; radio-frequency electromagnetic field; sintered; skin depth variations; transmission coefficient; Electromagnetic fields; Frequency dependence; Lanthanum; Magnetic field measurement; Magnetic fields; Magnetic materials; Magnetic resonance; Permeability; Radio frequency; Skin;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.990116

Filename

990116